5 Written Questions
5 Matching Questions
- Important Cofactors
- Supra Molecular Assemblies
- Fatty Acid
- a m. wt. = 10^6-10^9; ribosomes, enzyme complexes, contractile systems, microtubules.
- b The localized twisting and folding of the polypeptide chain. A specific orientation in space. Two main types: the alpha helix and the beta sheet. Helix- parallel some of the strongest; alpha keratin-nails; spiderwebs. Pleated sheet- anti-parallel; Beta keratin- silk. 18% of all proteins are one of these two shapes; others are random coiling
- c alters the topology of DNA molecules.
- d NAD+, NADP+, FAD, Coenzyme A
- e long hydrocarbon chain ending in a carboxyl group -COOH
5 Multiple Choice Questions
- all hydrocarbons have CH2 units (bad for health); animals
- one or more double bonds (mostly between 9 and 10); Plant and animals in cold climates.
- Needed to disrupt electronic configurations; physiological temperature and pressure too low for most chemical reactions to take place. Enzymes serve to speed up reactions by lowering activation energy.
- End-product allosterically inhibits the action of first enzyme in pathway. prevents cell from wasting resources.
- occupy another site on the enzyme, altering the active site.
5 True/False Questions
Carbohydrates → general formula (CH2O)n; subunits linked by glycosidic bonds; poly hydroxy aldehydes or ketones and their derivatives; functions- structural support, nutrient and energy.
Polysaccharides (glycans) → 10s-100s of polysaccharides; storage molecules, i.e., cellulose, chitin, glycogen; linear or branched; made of similar or different subunits.
Lipids → fats; long complex hydrocarbon chains; triglycerides, phospholipids in membranes, steroids like cholesterol; are non polar; function in energy storage and the structure of membranes; CH3(CH2)nCOOH n=14-22
NAG → N-acetyl muramic acid; important sugar acids in bacterial cell walls
Lactose → glucose and glucose; glucose is a bad sugar