Biomolecules
How to Remember Biomolecules
Carbohydrates:
- Monosaccharides: Simple sugars, e.g. Glucose
- Disaccharides: Two monosaccharides joined together, e.g. Sucrose
- Polysaccharides: Polymers of monosaccharides, e.g. Starch
- Glucose: Most abundant monosaccharide, main energy source for cells
- Fructose: Sweetest monosaccharide, found in fruits and honey
- Sucrose: Common table sugar, composed of glucose and fructose
- Cellulose: Structural polysaccharide found in plant cell walls
- Starch: Storage polysaccharide found in plants, e.g. Potatoes and grains
Proteins:
- Amino Acids: Building blocks of proteins, 20 different types
- Peptide bonds: Covalent bonds that link amino acids together
- Primary Structure: Sequence of amino acids in a polypeptide chain
- Secondary Structure: Regular folding of polypeptide chain, e.g. Alpha- helix, beta-sheet
- Tertiary Structure: Three-dimensional folding of polypeptide chain
- Quaternary Structure: Organization of multiple polypeptide chains into a functional complex
- Enzymes: Protein catalysts that accelerate chemical reactions
- Denaturation: Loss of protein’s native structure due to changes in pH, temperature, etc.
Lipids:
- Fats and Oils: Composed of fatty acids and glycerol, solid at room temperature
- Waxes: Long-chain fatty acids esterified with alcohols, waterproof barrier
- Phospholipids: Lipids with a phosphate-containing head group, major component of cell membranes
- Steroids: Lipids with a four-ring structure, e.g. Cholesterol, hormones
- Saturated Fatty Acids: No double bonds between carbon atoms, e.g. Palmitic acid
- Unsaturated Fatty Acids: One or more double bonds between carbon atoms, e.g. Oleic acid
Nucleic Acids:
- DNA: Double-stranded helix, genetic material of cells
- RNA: Single-stranded, involved in protein synthesis and gene regulation
- Nucleotides: Building blocks of nucleic acids, composed of a sugar, phosphate, and nitrogenous base
- Base Pairing: Hydrogen bonding between complementary bases (A-T, C-G, U-A)
- Double Helix: Two strands of DNA twisted around each other, resembling a twisted ladder
- Transcription: Synthesis of RNA from a DNA template
- Translation: Synthesis of proteins from an RNA template
- Replication: Copying of DNA, occurs before cell division
Vitamins:
- Fat-soluble Vitamins (A, D, E, K): Stored in body fat, can accumulate to toxic levels
- Water-soluble Vitamins (C, B-complex): Not stored in the body, must be consumed regularly
- Vitamin A: Important for vision, skin health, and immune function
- Vitamin D: Helps absorb calcium and promotes bone growth
- Vitamin E: Antioxidant, protects cells from damage
- Vitamin K: Necessary for blood clotting and bone health
- Vitamin C: Antioxidant, involved in immune function and collagen synthesis
- B-complex Vitamins: Involved in various metabolic reactions, including energy production, nerve function, and red blood cell formation
Minerals:
- Macronutrients (Calcium, Phosphorus, Potassium, Sodium, Chloride, Magnesium): Required in large amounts, make up electrolytes and structural components of bones and cells
- Micronutrients (Iron, Zinc, Iodine, Fluoride): Required in smaller amounts, essential for various bodily functions
- Calcium: Necessary for bone health and muscle function
- Phosphorus: Involved in energy production, bone formation, and acid-base balance
- Potassium: Regulates fluid balance, muscle contractions, and nerve transmission
- Sodium: Maintains fluid balance and blood pressure
- Chloride: Helps regulate fluid balance and acid-base balance
- Magnesium: Involved in energy production, nerve function, and muscle contraction
- Iron: Essential for red blood cell formation and oxygen transport
- Zinc: Involved in immune function, wound healing, and taste perception
- Iodine: Necessary for thyroid hormone production, regulates metabolism
- Fluoride: Prevents tooth decay and strengthens bones