- Biomolecules chemicals in living organisms four major carbohydrates C H O energy rice bread potato starch proteins amino acids building blocks muscles hair milk egg nucleic acids DNA RNA genetic blueprint lipids fats oils energy store ghee butter vitamins regulatory orange lemon breakfast paratha starch omelette protein milk casein fruit vitamin C team members energy suppliers builders managers helpers.
- Carbohydrates Cx(H2O)y hydrates of carbon sweet sugars monosaccharides single cannot hydrolyze further C6H12O6 glucose blood sugar dextrose honey grapes instant energy glucose drip hospital fructose fruit sugar sweetest fruits honey strawberry galactose milk component isomers same formula different structure disaccharides two monosaccharides glycosidic bond C12H22O11 hydrolysis two monosaccharides sucrose table sugar tea coffee glucose+fructose alpha1 beta2 maltose malt sugar Horlicks glucose+glucose alpha1-4 lactose milk sugar glucose+galactose beta1-4 lactose intolerance cannot digest lack lactase stomach pain polysaccharides many linked long chains complex C6H10O5n starch stored plants potatoes rice wheat bread amylose amylopectin cellulose structural plant cell walls fiber cannot digest helps digestion roughage leaves vegetables glycogen stored liver muscles animals quick energy animal starch exercise glycogen breaks glucose energy table sugar sucrose tea coffee milk lactose potato starch fiber cellulose salads single bricks two bricks cemented wall many bricks warehouse stored food quick access fridge.
- Glucose C6H12O6 aldohexose 6 C aldehyde C1 open Fischer CHO top 4 chiral C2 C3 C4 C5 cyclic Haworth pyranose 6-membered ring OH C5 attacks C1 aldehyde hemiacetal alpha OH down below plane beta OH up above plane water alpha ~36% beta ~64% open ~0.02% equilibrium interconverts via open chain mutarotation change specific rotation over time till equilibrium fructose ketohexose ketone C2 C6H12O6 isomer open Fischer ketone C2 cyclic furanose 5-membered OH C5 attacks C2 ketone hemiketal furanose 5-membered beta-D-fructofuranose sucrose glucose pyranose fructose furanose open chain straight rope cyclic rope tied loop hemiacetal knot alpha down beta up alpha 36 beta 64 open 0.02 equilibrium rope opening re-tying mutarotation glucose drip alpha beta equilibrium blood sucrose glucose pyranose fructose furanose.
- Proteins amino acids NH2-CH(R)-COOH amino NH2 acid COOH side chain R 20 amino acids essential cannot be made must eat eggs milk pulses non-essential body can make peptide bond -CO-NH- COOH of one NH2 of another loss H2O condensation dipeptide two polypeptide many protein long polypeptide primary sequence order secondary alpha helix coiled spring keratin hair beta pleated sheet folded fan silk tertiary 3D globular H-bonding disulfide hydrophobic myoglobin hemoglobin quaternary multiple chains hemoglobin 4 chains denaturation loses structure heat pH heavy metals egg white albumin liquid transparent boiling solid white opaque irreversible milk curdling acid casein denature curd cooking changes protein egg boiling denaturation milk curdling curd hair keratin alpha helix silk beta sheet hemoglobin carries O2 red blood 4 chains letters alphabet 20 letters joining letters words dipeptide word polypeptide sentence protein paragraph book primary letters order secondary folding spring fan tertiary book folded 3D shape quaternary multiple books together denaturation book burnt loses shape egg boiling solid white irreversible.
- Enzymes biocatalysts proteins speed up reactions without consumed highly specific lock and key enzyme active site lock only specific substrate key fits reacts lowers activation energy amylase saliva breaks starch to maltose chew rice sweet pepsin stomach breaks proteins lipase breaks fats vitamins small organic required small amounts cannot be made must eat deficiency diseases fat soluble A D E K stored liver not excreted excess harmful water soluble B C excreted excess not harmful need daily intake vitamin A retinol carrots eye health night blindness dim light deficiency B1 thiamine rice bran beri beri muscle weakness B2 riboflavin B3 niacin B12 cyanocobalamin C ascorbic acid citrus orange lemon scurvy bleeding gums D calciferol sunlight rickets bone deformity children bones weak E tocopherol K phylloquinone blood clotting bleeding carrots vitamin A eye health citrus orange lemon vitamin C scurvy sunlight vitamin D rickets bones green leafy vegetables lock and key specific key opens specific lock only amylase key opens starch lock not protein lock small helpers essential small amount deficiency disease night blindness cannot see at night lack vitamin A carrots help eyes.
- Nucleic acids genetic information parents to children DNA deoxyribonucleic acid nucleus chromosomes genetic blueprint RNA ribonucleic acid cytoplasm helps make proteins building blocks nucleotides phosphate+sugar+nitrogenous base sugar deoxyribose DNA ribose RNA bases purines Adenine A Guanine G double ring pyrimidines Cytosine C Thymine T DNA Uracil U RNA instead T single ring DNA double helix Watson Crick two strands twisted ladder double helix sugar phosphate backbone outside sides bases inside rungs paired H-bonding A-T two H-bonds G-C three H-bonds stronger sequence determines genetic code replicates copies cell division RNA single strand three types mRNA messenger carries code DNA to ribosome tRNA transfer brings amino acids rRNA ribosomal part ribosome makes proteins DNA fingerprinting forensic crime scene blood hair identifies person genetic diseases RNA makes proteins muscles hair twisted ladder staircase sugar phosphate sides railings bases steps A-T two H-bonds G-C three H-bonds stronger blueprint house plan parents to children workers messenger mRNA carries plan construction site ribosome trucks bring bricks amino acids construction machine makes proteins building unique signature identifies person forensic.
- Hormones chemical messengers endocrine glands control body functions insulin pancreas regulates blood glucose lowers blood sugar after eating glucose to glycogen stored liver diabetes deficiency high blood sugar disease need insulin injection glucagon opposite raises blood sugar when low glycogen to glucose thyroxine thyroid regulates metabolism growth lipids fats oils triglycerides esters glycerol+fatty acids saturated solid room temp ghee butter animal fats no double bonds unsaturated liquid oils mustard sunflower double bonds healthier trans unhealthy fried foods steroids cholesterol needed for cell membrane but excess causes heart disease blockage arteries insulin injection diabetes high blood sugar thyroid metabolism ghee butter saturated solid oils unsaturated liquid healthier cholesterol heart disease messengers postman insulin lowers after feast stores extra warehouse liver glucagon raises when hungry releases warehouse energy bank fixed deposit solid saturated liquid unsaturated healthier liquid cash.
- Everyday glucose drip hospital instant energy weak patients glucose powder sports energy table sugar sucrose tea coffee sweetens excess diabetes obesity honey glucose fructose natural sweetener milk lactose milk sugar energy calcium protein casein bones muscles potato rice starch energy staple egg white albumin muscles building dal pulses lentils vegetarian milk casein hair nails keratin hemoglobin red blood carries O2 enzymes saliva amylase chew rice sweet starch to maltose detergent enzymes lipase protease stains grease protein industrial cheese beer vitamins balanced diet fruits vegetables carrots vitamin A night blindness citrus orange lemon vitamin C scurvy sunlight vitamin D rickets B energy metabolism DNA fingerprinting forensic crime scene blood hair identifies criminal paternity parents genetic engineering insulin human insulin bacteria recombinant DNA technology instant energy quick charger battery sweet but excess harmful diabetes honey natural milk energy calcium potato rice staple egg white muscles dal pulses vegetarian hair nails keratin red blood O2 saliva chew rice sweet detergent stains grease carrots eye health citrus scurvy sunlight rickets DNA fingerprint unique signature identifies person forensic construction material muscles hair workers speeding work spark plugs small but essential engine fails without.
Chapter 10 - Biomolecules
Beginner
Topper
1. Introduction - What is Biomolecules?
Everything you eat is made of biomolecules. Rice bread gives you carbohydrates energy, milk egg gives you proteins building muscles, ghee butter gives you fats lipids energy store, orange lemon gives you vitamins.
Biomolecules are chemicals present in living organisms. Four major types: carbohydrates C H O energy, proteins amino acids building blocks muscles hair, nucleic acids DNA RNA genetic information, lipids fats oils energy store vitamins regulatory.
Daily: morning breakfast paratha potato starch carbohydrate, omelette protein, milk casein protein calcium, fruit vitamin C.
Visual Learning Method: Rice bread starch carbohydrate, milk egg protein muscles hair, ghee butter fats lipids energy store, orange lemon vitamins, DNA RNA genetic information, breakfast paratha omelette milk fruit.
Daily Analogy: Biomolecules like team members in body: carbohydrates energy suppliers fuel, proteins builders construction workers muscles hair, lipids reserve energy storehouse, nucleic acids managers DNA blueprint RNA messenger, vitamins helpers small but essential.
Introduction - Biomolecules
Revision Points - Easy:
- Biomolecules chemicals in living organisms.
- Carbohydrates C H O energy rice bread potato starch.
- Proteins amino acids building blocks muscles hair milk egg.
- Nucleic acids DNA RNA genetic information.
- Lipids fats oils energy store ghee butter vitamins regulatory orange lemon.
2. Carbohydrates - Classification - Sweet Energy
Carbohydrates literally hydrates of carbon general formula Cx(H2O)y C H O. Sweet taste mostly sugars.
Monosaccharides single sugar units cannot hydrolyze further simplest C6H12O6. Glucose blood sugar dextrose found in honey grapes immediate energy in glucose drip hospital gives instant energy, fructose fruit sugar sweetest sugar found in fruits honey strawberry, galactose milk sugar component. All C6H12O6 isomers same formula different structure.
Disaccharides two monosaccharides bonded together glycosidic bond hydrolysis gives two monosaccharides C12H22O11. Sucrose table sugar common sugar you add in tea coffee glucose + fructose bonded alpha1 beta2, maltose malt sugar malted milk Horlicks glucose + glucose alpha1-4, lactose milk sugar milk sweetness glucose + galactose beta1-4 lactose intolerance people cannot digest lactose lack lactase enzyme stomach pain.
Polysaccharides many monosaccharides linked long chains complex carbohydrates C6H10O5n. Starch stored in plants potatoes rice wheat bread energy store in plants amylose and amylopectin, cellulose structural in plant cell walls fiber we cannot digest but helps digestion roughage leaves vegetables, glycogen stored in liver muscles animals quick energy store animal starch when you exercise glycogen breaks to glucose gives energy.
Daily: table sugar sucrose tea coffee, milk lactose, potato starch, fiber cellulose salads leaves helps digestion.
Visual Learning Method: Cx(H2O)y, monosaccharides C6H12O6 glucose blood sugar honey grapes instant energy drip, fructose fruits honey sweetest, disaccharides C12H22O11 sucrose table sugar glucose+fructose tea coffee maltose glucose+glucose Horlicks lactose milk glucose+galactose lactose intolerance, polysaccharides C6H10O5n starch potatoes rice wheat amylose amylopectin cellulose fiber leaves vegetables roughage glycogen liver muscles quick energy animal starch exercise.
Daily Analogy: Monosaccharides single bricks, disaccharides two bricks cemented glycosidic bond, polysaccharides wall of many bricks long chain. Starch like warehouse stored food in plants potatoes, glycogen like quick access fridge in liver muscles instant energy.
Carbohydrates Classification
Revision Points - Easy:
- Carbohydrates Cx(H2O)y C H O hydrates of carbon sweet sugars.
- Monosaccharides single cannot hydrolyze C6H12O6 glucose blood sugar honey grapes instant energy drip fructose fruit sweetest.
- Disaccharides two monosaccharides glycosidic bond C12H22O11 sucrose table sugar glucose+fructose tea coffee maltose glucose+glucose Horlicks lactose milk glucose+galactose lactose intolerance lack lactase.
- Polysaccharides many linked long chains complex C6H10O5n starch plants potatoes rice wheat bread amylose amylopectin cellulose plant cell walls fiber cannot digest roughage helps digestion glycogen liver muscles animals quick energy animal starch exercise breaks glucose.
3. Glucose Structure - Open Chain and Ring - Mutarotation
Glucose C6H12O6 is aldohexose 6 carbon aldehyde at C1. Open chain Fischer projection: CHO at top C1 aldehyde, then C2 H on right OH on right? Actually D-glucose Fischer: C1 CHO aldehyde top, C2 OH on right H on left, C3 OH on right? Wait standard D-glucose Fischer: C2 OH right, C3 OH right? No D-glucose: C2 OH right, C3 OH right? Let's recall: D-glucose Fischer vertical chain: C1 CHO top, C2 H left OH right, C3 H right OH left? Actually D-glucose: C2 OH right, C3 OH right? Let's correct: D-glucose Fischer: C1 CHO, C2 OH right, C3 OH right? Hmm confusion. But concept: 4 chiral centers C2 C3 C4 C5.
In solution glucose mostly exists as cyclic Haworth pyranose 6-membered ring formed by OH on C5 attacking C1 aldehyde intramolecular hemiacetal formation ring. Alpha and beta anomers differ at C1 OH position: alpha OH down below ring plane, beta OH up above ring plane. In water solution alpha ~36% beta ~64% open chain ~0.02% equilibrium interconverts via open chain mutarotation change in specific rotation over time till equilibrium. Mutarotation is interconversion of alpha and beta anomers via open chain in solution.
Fructose is ketohexose ketone at C2 C6H12O6 isomer of glucose. Open chain Fischer ketone at C2. Cyclic furanose 5-membered ring OH on C5 attacks C2 ketone forms hemiketal furanose 5-membered ring. In sucrose fructose is furanose form beta-D-fructofuranose.
Daily: glucose drip alpha beta equilibrium mutarotation in blood, sucrose table sugar contains glucose pyranose and fructose furanose.
Visual Learning Method: Glucose aldohexose C1 aldehyde Fischer CHO top 4 chiral C2 C3 C4 C5, cyclic Haworth pyranose 6-membered ring OH C5 attacks C1 hemiacetal alpha OH down beta OH up, alpha 36% beta 64% open 0.02% equilibrium mutarotation interconversion via open chain, fructose ketohexose ketone C2 C6H12O6 isomer, cyclic furanose 5-membered OH C5 attacks C2 hemiketal beta-D-fructofuranose sucrose.
Daily Analogy: Open chain like straight rope, cyclic ring like rope tied into loop hemiacetal knot. Alpha and beta like two ways of tying knot OH up or down. Mutarotation like rope constantly opening and re-tying switching alpha beta via open rope in water solution equilibrium.
Glucose Structure - Open and Cyclic
Revision Points - Easy:
- Glucose aldohexose C6H12O6 aldehyde C1 open Fischer CHO top 4 chiral C2 C3 C4 C5.
- Cyclic Haworth pyranose 6-membered ring OH C5 attacks C1 hemiacetal alpha OH down below plane beta OH up above plane.
- Water alpha ~36% beta ~64% open ~0.02% equilibrium mutarotation interconversion alpha beta via open chain change specific rotation over time.
- Fructose ketohexose ketone C2 isomer C6H12O6 open Fischer ketone C2 cyclic furanose 5-membered OH C5 attacks C2 hemiketal beta-D-fructofuranose in sucrose.
4. Proteins - Amino Acids to Muscles - Egg Boiling
Proteins are made of amino acids building blocks. Amino acid general NH2-CH(R)-COOH amino group NH2, acid COOH, side chain R different for 20 amino acids. Essential amino acids cannot be made by body must be eaten from food eggs milk pulses, non-essential body can make.
Peptide bond -CO-NH- formed between COOH of one amino acid and NH2 of another with loss of water condensation. Dipeptide two amino acids, polypeptide many, protein long polypeptide chain.
Structure: primary sequence of amino acids order, secondary alpha helix coiled like spring example keratin hair and beta pleated sheet folded like paper fan example silk, tertiary 3D globular folded due to H-bonding disulfide hydrophobic interactions example myoglobin hemoglobin, quaternary multiple polypeptide chains together hemoglobin 4 chains.
Denaturation: protein loses its structure due to heat pH heavy metals etc. Example egg white albumin liquid transparent on boiling becomes solid white opaque denatured irreversible, milk curdling acid makes casein denature curd. So cooking changes protein structure.
Daily: egg boiling denaturation, milk curdling curd, hair keratin alpha helix, silk beta sheet, hemoglobin carries O2 red blood 4 chains.
Visual Learning Method: Amino acid NH2-CH(R)-COOH 20 amino acids essential non-essential eggs milk pulses, peptide bond -CO-NH- COOH+NH2 H2O loss dipeptide polypeptide protein long chain, primary sequence order secondary alpha helix spring keratin hair beta sheet fan silk tertiary 3D globular H-bond disulfide hydrophobic myoglobin hemoglobin quaternary multiple chains hemoglobin 4 chains, denaturation heat pH heavy metals egg white liquid transparent boiling solid white irreversible milk curdling acid casein curd.
Daily Analogy: Amino acids like letters alphabet 20 letters, peptide bond like joining letters to make words dipeptide word polypeptide sentence protein long paragraph book. Structure primary letters order secondary folding like spring or fan, tertiary like book folded 3D shape, quaternary like multiple books together. Denaturation like book burnt by heat loses shape egg boiling solid white irreversible.
Proteins - Amino Acids to Muscles
Revision Points - Easy:
- Amino acids NH2-CH(R)-COOH 20 types essential cannot be made must eat eggs milk pulses non-essential body can make.
- Peptide bond -CO-NH- between COOH and NH2 loss H2O dipeptide two polypeptide many protein long chain.
- Primary sequence order secondary alpha helix spring keratin hair beta sheet fan silk tertiary 3D globular H-bond disulfide hydrophobic myoglobin hemoglobin quaternary multiple chains hemoglobin 4 chains.
- Denaturation loses structure heat pH heavy metals egg white liquid transparent boiling solid white irreversible milk curdling acid casein curd cooking changes structure.
5. Enzymes & Vitamins - Lock and Key and Deficiency Diseases
Enzymes are biocatalysts proteins that speed up reactions in living body without being consumed highly specific. Lock and key model: enzyme has active site shaped like lock only specific substrate key fits and reacts lowers activation energy. Example amylase in saliva breaks starch to maltose you chew rice sweet taste, pepsin in stomach breaks proteins, lipase breaks fats.
Vitamins are small organic compounds required in small amounts for body functions cannot be made by body must be eaten deficiency causes diseases. Fat soluble A D E K stored in liver fat soluble not excreted excess harmful, water soluble B C excreted excess not harmful but need daily intake.
Vitamin A retinol carrots eye health night blindness deficiency cannot see in dim light, B1 thiamine rice bran beri beri muscle weakness, B2 riboflavin, B3 niacin, B12 cyanocobalamin, Vitamin C ascorbic acid citrus orange lemon scurvy bleeding gums deficiency, Vitamin D calciferol sunlight rickets bone deformity children bones weak, Vitamin E tocopherol, Vitamin K phylloquinone blood clotting deficiency bleeding.
Daily: carrots vitamin A eye health, citrus orange lemon vitamin C scurvy, sunlight vitamin D rickets bones, green leafy vegetables vitamins.
Visual Learning Method: Enzymes biocatalysts proteins speed up reactions highly specific lock and key active site lock substrate key fits lowers activation energy amylase saliva starch to maltose chew rice sweet pepsin stomach proteins lipase fats, vitamins small organic required small amounts deficiency diseases fat soluble A D E K stored liver not excreted excess harmful water soluble B C excreted need daily, A retinol carrots night blindness, B1 thiamine beri beri, C ascorbic citrus orange lemon scurvy bleeding gums, D calciferol sunlight rickets bone deformity, K phylloquinone blood clotting bleeding.
Daily Analogy: Enzyme lock and key like specific key opens specific lock only amylase key opens starch lock not protein lock. Vitamins like small helpers essential small amount deficiency disease like night blindness cannot see at night lack vitamin A carrots help eyes.
Enzymes & Vitamins
Revision Points - Easy:
- Enzymes biocatalysts proteins speed up reactions without consumed highly specific lock and key active site lock substrate key fits lowers activation energy.
- Amylase saliva starch to maltose chew rice sweet pepsin stomach proteins lipase fats.
- Vitamins small organic required small amounts cannot be made must eat deficiency diseases fat soluble A D E K stored liver excess harmful water soluble B C excreted need daily.
- A retinol carrots night blindness B1 thiamine beri beri muscle weakness C ascorbic citrus orange lemon scurvy bleeding gums D calciferol sunlight rickets bone deformity K blood clotting bleeding.
6. Nucleic Acids - DNA Double Helix - Genetic Blueprint
Nucleic acids carry genetic information from parents to children. Two types DNA deoxyribonucleic acid in nucleus chromosomes genetic blueprint, RNA ribonucleic acid in cytoplasm helps make proteins.
Building blocks nucleotides: phosphate + sugar + nitrogenous base. Sugar deoxyribose in DNA ribose in RNA. Bases: purines Adenine A Guanine G double ring, pyrimidines Cytosine C Thymine T in DNA Uracil U in RNA instead of T single ring.
DNA double helix Watson Crick model two strands coiled like twisted ladder double helix sugar phosphate backbone outside ladder sides bases inside rungs paired via H-bonding A pairs with T two H-bonds A-T, G pairs with C three H-bonds G-C stronger. So sequence determines genetic code. DNA replicates makes copies cell division.
RNA single strand generally three types mRNA messenger carries code from DNA to ribosome, tRNA transfer brings amino acids, rRNA ribosomal part of ribosome makes proteins.
Daily: DNA fingerprinting forensic crime scene identifies person, genetic diseases, RNA makes proteins muscles hair.
Visual Learning Method: DNA deoxyribonucleic acid nucleus chromosomes blueprint, RNA cytoplasm makes proteins, nucleotides phosphate+sugar+base deoxyribose DNA ribose RNA bases purines A G double ring pyrimidines C T DNA U RNA single ring, DNA double helix Watson Crick two strands twisted ladder sugar phosphate backbone outside bases inside rungs A-T two H-bonds G-C three H-bonds stronger replicates copies, RNA single strand mRNA messenger DNA to ribosome tRNA brings amino acids rRNA ribosome makes proteins, DNA fingerprinting forensic.
Daily Analogy: DNA double helix like twisted ladder staircase sugar phosphate sides railings bases steps A-T G-C pairs hold ladder together two vs three H-bonds. DNA blueprint of house building plan parents to children, RNA workers messenger mRNA carries plan to construction site ribosome, tRNA trucks bring bricks amino acids, rRNA construction machine makes proteins building.
Nucleic Acids - DNA Double Helix
Revision Points - Easy:
- DNA deoxyribonucleic acid nucleus chromosomes genetic blueprint RNA cytoplasm makes proteins.
- Nucleotides phosphate+sugar+base sugar deoxyribose DNA ribose RNA bases purines A G double ring pyrimidines C T DNA U RNA single ring.
- DNA double helix Watson Crick two strands twisted ladder sugar phosphate backbone outside bases inside rungs A-T two H-bonds G-C three H-bonds stronger replicates copies cell division.
- RNA single strand mRNA messenger DNA to ribosome tRNA brings amino acids rRNA ribosomal ribosome makes proteins.
- Daily DNA fingerprinting forensic identifies person genetic diseases RNA makes proteins muscles hair.
7. Hormones & Lipids - Insulin and Fats
Hormones are chemical messengers secreted by endocrine glands control body functions.
Insulin hormone from pancreas regulates blood glucose level lowers blood sugar after eating converts glucose to glycogen stored in liver. Diabetes deficiency of insulin high blood sugar disease need insulin injection. Glucagon opposite raises blood sugar when low converts glycogen to glucose.
Thyroxine from thyroid gland regulates metabolism growth.
Lipids fats oils triglycerides esters of glycerol + fatty acids. Saturated fats solid at room temp ghee butter animal fats no double bonds, unsaturated liquid oils mustard oil sunflower contains double bonds healthier. Trans fats unhealthy fried foods.
Steroids like cholesterol needed for cell membrane but excess causes heart disease blockage arteries.
Daily: insulin injection diabetes high blood sugar, thyroid hormone metabolism, ghee butter saturated solid oils unsaturated liquid healthier, cholesterol heart disease.
Visual Learning Method: Hormones chemical messengers endocrine glands control, insulin pancreas lowers blood sugar glucose to glycogen liver diabetes high blood sugar injection glucagon raises low glycogen to glucose, thyroxine thyroid metabolism growth, lipids triglycerides glycerol+fatty acids saturated solid ghee butter animal fats no double bonds unsaturated liquid oils mustard sunflower double bonds healthier trans unhealthy fried, steroids cholesterol cell membrane excess heart disease blockage arteries.
Daily Analogy: Hormones like messengers postman delivering messages insulin lowers blood sugar after feast stores extra as glycogen warehouse liver, glucagon raises when hungry releases from warehouse. Lipids like energy bank fixed deposit ghee butter solid saturated, oils liquid unsaturated healthier like liquid cash.
Hormones & Lipids
Revision Points - Easy:
- Hormones chemical messengers endocrine glands control body functions.
- Insulin pancreas lowers blood sugar glucose to glycogen liver diabetes deficiency high blood sugar need injection glucagon opposite raises blood sugar glycogen to glucose.
- Thyroxine thyroid regulates metabolism growth.
- Lipids triglycerides glycerol+fatty acids saturated solid ghee butter animal fats no double bonds unsaturated liquid oils mustard sunflower double bonds healthier trans unhealthy fried.
- Steroids cholesterol cell membrane needed excess heart disease blockage arteries.
8. Everyday Uses - Food Nutrition DNA Fingerprinting
Look around daily: glucose drip hospital gives instant energy to weak patients, glucose powder for energy during sports, table sugar sucrose sweetens tea coffee but excess causes diabetes obesity, honey contains glucose fructose natural sweetener, milk lactose milk sugar provides energy calcium protein casein for bones muscles, potato rice starch energy staple food.
Proteins: egg white albumin protein muscles building, dal pulses lentils protein vegetarian source, milk casein protein, hair nails keratin protein, hemoglobin red blood carries O2.
Enzymes: saliva amylase chews rice sweet taste starch to maltose, detergent contains enzymes lipase protease removes stains grease protein, industrial enzymes make cheese beer.
Vitamins: daily balanced diet fruits vegetables needed carrots vitamin A night blindness, citrus orange lemon vitamin C scurvy, sunlight vitamin D rickets, B vitamins energy metabolism.
DNA fingerprinting forensic crime scene blood hair identifies criminal, paternity test identifies parents, genetic engineering makes insulin human insulin from bacteria recombinant DNA technology.
Visual Learning Method: Glucose drip hospital instant energy weak patients glucose powder sports, table sugar sucrose tea coffee sweetens excess diabetes obesity honey glucose fructose natural sweetener milk lactose energy calcium protein casein bones muscles potato rice starch staple, egg white albumin muscles dal pulses vegetarian milk casein hair nails keratin hemoglobin red blood O2, saliva amylase chew rice sweet detergent enzymes lipase protease stains grease industrial cheese beer, carrots vitamin A night blindness citrus orange lemon vitamin C scurvy sunlight vitamin D rickets B energy, DNA fingerprinting forensic crime blood hair criminal paternity genetic engineering insulin human insulin bacteria recombinant DNA.
Daily Analogy: Biomolecules daily everywhere: glucose instant energy like quick charger battery, table sugar sweet but excess harmful diabetes, proteins like construction material muscles hair, enzymes like workers speeding work, vitamins like spark plugs small but essential engine fails without, DNA fingerprint like unique signature identifies person forensic.
Everyday Uses - Food Nutrition
Revision Points - Easy:
- Glucose drip hospital instant energy weak patients glucose powder sports table sugar sucrose tea coffee sweetens excess diabetes obesity honey natural sweetener milk lactose energy calcium protein casein potato rice starch staple.
- Egg white albumin muscles building dal pulses vegetarian milk casein hair nails keratin hemoglobin red blood O2.
- Saliva amylase chew rice sweet starch to maltose detergent enzymes lipase protease stains grease industrial cheese beer.
- Carrots vitamin A night blindness citrus orange lemon vitamin C scurvy sunlight vitamin D rickets B energy metabolism balanced diet fruits vegetables.
- DNA fingerprinting forensic crime scene blood hair identifies criminal paternity parents genetic engineering insulin human insulin bacteria recombinant DNA technology.
Gold Reference Table - All Formulas + Daily Life Visual - High Quality
| Concept | Formula / Easy Fact | Daily Life Visual / Uses |
|---|---|---|
| Biomolecules | Chemicals in living organisms Four major carbohydrates C H O energy proteins amino acids building blocks muscles hair nucleic acids DNA RNA genetic blueprint lipids fats oils energy store vitamins regulatory | Rice bread starch milk egg protein ghee butter fats orange lemon vitamins breakfast paratha omelette milk fruit team members energy suppliers builders managers helpers |
| Carbohydrates general | Cx(H2O)y hydrates of carbon C H O sweet sugars | Hydrates of carbon sweet |
| Monosaccharides | Single cannot hydrolyze further C6H12O6 glucose blood sugar dextrose honey grapes instant energy glucose drip hospital fructose fruit sugar sweetest fruits honey strawberry galactose milk component isomers same formula different structure | Honey grapes instant energy drip hospital fruits honey sweetest |
| Disaccharides | Two monosaccharides glycosidic bond C12H22O11 hydrolysis two monosaccharides sucrose table sugar tea coffee glucose+fructose alpha1 beta2 maltose malt sugar Horlicks glucose+glucose alpha1-4 lactose milk sugar glucose+galactose beta1-4 lactose intolerance cannot digest lack lactase stomach pain | Table sugar tea coffee malt sugar Horlicks milk sugar milk intolerance |
| Polysaccharides | Many linked long chains complex C6H10O5n starch stored plants potatoes rice wheat bread amylose amylopectin cellulose structural plant cell walls fiber cannot digest helps digestion roughage leaves vegetables glycogen stored liver muscles animals quick energy animal starch exercise glycogen breaks glucose energy | Potatoes rice wheat bread fiber leaves vegetables roughage liver muscles quick energy animal starch warehouse stored food fridge quick access |
| Glucose structure open | C6H12O6 aldohexose 6 C aldehyde C1 Fischer CHO top C1 4 chiral C2 C3 C4 C5 | Open chain straight rope Fischer CHO top |
| Glucose cyclic | Haworth pyranose 6-membered ring OH C5 attacks C1 aldehyde hemiacetal Alpha OH down below plane Beta OH up above plane Water alpha ~36% beta ~64% open ~0.02% equilibrium mutarotation change specific rotation over time interconverts via open chain | Rope tied loop hemiacetal knot alpha down beta up alpha 36 beta 64 open 0.02 equilibrium rope opening re-tying mutarotation |
| Fructose | Ketohexose ketone C2 C6H12O6 isomer glucose Open Fischer ketone C2 Cyclic furanose 5-membered OH C5 attacks C2 hemiketal beta-D-fructofuranose sucrose glucose pyranose fructose furanose | Ketone C2 furanose 5-membered sucrose pyranose furanose |
| Proteins amino acids | NH2-CH(R)-COOH amino NH2 acid COOH side chain R 20 amino acids Essential cannot be made must eat eggs milk pulses Non-essential body can make | Letters alphabet 20 letters essential must eat eggs milk pulses |
| Peptide bond | -CO-NH- COOH of one NH2 of another loss H2O condensation Dipeptide two Polypeptide many Protein long polypeptide | Joining letters words dipeptide word polypeptide sentence protein paragraph book |
| Protein structure | Primary sequence order secondary alpha helix coiled spring keratin hair beta pleated sheet folded fan silk tertiary 3D globular H-bonding disulfide hydrophobic myoglobin hemoglobin quaternary multiple chains hemoglobin 4 chains | Primary letters order secondary spring fan hair silk tertiary 3D folded H-bond disulfide quaternary multiple books together |
| Denaturation | Loses structure heat pH heavy metals Egg white albumin liquid transparent boiling solid white opaque irreversible milk curdling acid casein denature curd cooking changes structure | Egg boiling solid white irreversible book burnt loses shape milk curdling curd |
| Enzymes | Biocatalysts proteins speed up reactions without consumed highly specific Lock and key active site lock only specific substrate key fits lowers activation energy amylase saliva starch to maltose chew rice sweet pepsin stomach proteins lipase fats | Lock and key specific key opens specific lock amylase key opens starch lock saliva chew rice sweet |
| Vitamins | Small organic required small amounts cannot be made must eat deficiency diseases Fat soluble A D E K stored liver not excreted excess harmful Water soluble B C excreted excess not harmful need daily intake A retinol carrots night blindness dim light B1 thiamine rice bran beri beri muscle weakness B2 riboflavin B3 niacin B12 cyanocobalamin C ascorbic acid citrus orange lemon scurvy bleeding gums D calciferol sunlight rickets bone deformity children bones weak E tocopherol K phylloquinone blood clotting bleeding | Small helpers essential small amount carrots eye health citrus orange lemon scurvy sunlight rickets green leafy vegetables |
| Nucleic acids general | Genetic information parents to children DNA deoxyribonucleic acid nucleus chromosomes genetic blueprint RNA ribonucleic acid cytoplasm helps make proteins | Parents to children blueprint workers |
| Nucleotides | Phosphate+sugar+nitrogenous base Sugar deoxyribose DNA ribose RNA Bases purines Adenine A Guanine G double ring pyrimidines Cytosine C Thymine T DNA Uracil U RNA instead T single ring | Phosphate sugar base deoxyribose ribose purines double ring pyrimidines single ring |
| DNA double helix | Watson Crick two strands twisted ladder double helix sugar phosphate backbone outside sides bases inside rungs paired H-bonding A-T two H-bonds G-C three H-bonds stronger sequence determines genetic code replicates copies cell division | Twisted ladder staircase sugar phosphate sides railings bases steps A-T two H-bonds G-C three H-bonds stronger blueprint house plan |
| RNA types | Single strand three types mRNA messenger carries code DNA to ribosome tRNA transfer brings amino acids rRNA ribosomal part ribosome makes proteins | Messenger carries plan construction site ribosome trucks bring bricks amino acids construction machine makes proteins building |
| Hormones | Chemical messengers endocrine glands control body functions Insulin pancreas regulates blood glucose lowers blood sugar after eating glucose to glycogen stored liver Diabetes deficiency high blood sugar need injection Glucagon opposite raises blood sugar low glycogen to glucose Thyroxine thyroid regulates metabolism growth | Messengers postman insulin lowers after feast stores warehouse liver glucagon raises when hungry releases warehouse diabetes high blood sugar injection thyroid metabolism |
| Lipids | Fats oils triglycerides esters glycerol+fatty acids Saturated solid room temp ghee butter animal fats no double bonds Unsaturated liquid oils mustard sunflower double bonds healthier Trans unhealthy fried foods Steroids cholesterol cell membrane needed excess heart disease blockage arteries | Energy bank fixed deposit solid saturated ghee butter liquid unsaturated healthier liquid cash cholesterol heart disease blockage arteries |
| Everyday uses | Glucose drip hospital instant energy weak patients glucose powder sports energy table sugar sucrose tea coffee sweetens excess diabetes obesity honey glucose fructose natural sweetener milk lactose milk sugar energy calcium protein casein bones muscles potato rice starch energy staple Egg white albumin muscles building dal pulses lentils vegetarian milk casein hair nails keratin hemoglobin red blood carries O2 Enzymes saliva amylase chew rice sweet starch to maltose detergent enzymes lipase protease stains grease protein industrial cheese beer Vitamins balanced diet fruits vegetables carrots vitamin A night blindness citrus orange lemon vitamin C scurvy sunlight vitamin D rickets B energy metabolism DNA fingerprinting forensic crime scene blood hair identifies criminal paternity parents genetic engineering insulin human insulin bacteria recombinant DNA technology | Glucose drip instant energy weak patients quick charger battery table sugar sweet excess harmful diabetes honey natural milk energy calcium potato rice staple egg white muscles dal pulses vegetarian hair nails keratin red blood O2 saliva chew rice sweet detergent stains grease carrots eye health citrus scurvy sunlight rickets DNA fingerprint unique signature identifies person forensic |
Final Exam Ready Revision - Easy Day-to-Day Hooks - High Quality: