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Transcript
Carbohydrates* Activity 3E Building Blocks: monosaccharides (simple sugars) Characteristics: o General formula: CH2O o 5 & 6 sided ring structure o Most end in –ose o Hydroxyl –OH & Carbonyl C=O groups o Range from simple to complex, Almost all are hydrophilic Groups o Monosaccharide* (glucose, fructose) Fuel for cell work; quick energy, Used in cellular respiration to make ATP (energy) o Disaccharide (lactose, sucrose) Transport sucrose in plants; energy transport o Polysaccharide* (starch, glycogen, cellulose) Store energy: starch* in plants & glycogen* in animals Structural: cellulose in plants, chitin in animals Lipids* Activity 3F Building Blocks: glycerol & fatty acids Characteristics: C & H linked by nonpolar covalent bonds, Hydrophobic (water fearing) Groups o Fats (triglyceride*) o Uses: energy storage, cushion organs, insulation, membranes Saturated Fat* ▫ Maximum amount of hydrogens, No double bonds ▫ Solid at room temp; butter Unsaturated Fat* ▫ Does not have the maximum amount of hydrogens, Has double bonds ▫ Liquid at room temp; oils o Phospholipid* Glycerol, 2 fatty acids & a phosphate group Cell membranes; lecithin o Waxes: FA, + alcohol, Coatings on leaves and fruits, Beeswax o Steroids: 4 fused rings + C Skeleton, Membranes, hormones, Cholesterol Proteins* Activity 3H Building Blocks: Amino Acids* o Held by peptide bonds o Simple chain: nccnccncc n= amino group, o Monomer splits between ncc / ncc Characteristics: 4 levels o Primary: Amino acid chain o Secondary: H bonds cause coils (alpha helix) & folding (pleated sheet) o Tertiary: 3D shape results from interactions with the ‘R’ group o Quaternary: binding of 2 or polypeptide chains Groups o Structural: support, found in hair, tendons & ligaments; Keratin, Collagen, Elastin o Contractile: movement; muscles, flagella, cytoskeleton; Actin, Myosin o Defensive: protection against diseases; antibodies o Signal: detect stimuli, communicate between cells, hormones; Insulin o Transport: carry nutrients in the blood, sugar to cells; Hemoglobin o Storage: store amino acid; Ovalbumin o Enzymes:* catalyze reactions; Amylase o Milk: amino acids in babies, protein for seed; Casein Nucleic Acids* Building Blocks: Nucleotides:* 5 carbon sugar, phosphate group & nitrogen base Characteristics: Carries genetic information, held by phosphodiester bonds Groups o DNA: Information storage/template o RNA: Information transport & translation, carry info around the cell, enzymatic