5 Written questions
5 Matching questions
- SImple Proteins
- Nucleic Acids
- metabolic intermediates
- a 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
- b pyruvate, citrate, malate, etc.
- c m. wt. 10^3- 10^9; nucleic acids, proteins, lipids, polysaccharides. 4 most important to study.
- d DNA and RNA; Basic Unit- nucleotide; Building Blocks- a cyclic pentose sugar; phosphate; nitrogenous base. DNA lacks a hydroxyl group making it more flexible.
- e contains only amino acids
5 Multiple choice questions
- the actual sequence of the amino acids
- Fats or triglycerides= glycerol plus one or more fatty acids.
- glucose and fructose; bad for teeth
- Contain elements such as phosphorus, nitrogen, and sulfur; phospholipids form membranes (have polar head group); Main structural component of the cell membrane.
- glucose and glucose; glucose is a bad sugar
5 True/False questions
Oligosaccharides → most important are disaccharides; covalent linkages of two monosaccharides with the release of H2O (glycosidic bond). i.e. sucrose, lactose, maltose, etc.
Ketose → fruit sugar mostly; but found in plants and animals also
Carbohydrates → general formula (CH2O)n; subunits linked by glycosidic bonds; poly hydroxy aldehydes or ketones and their derivatives; functions- structural support, nutrient and energy.
NAM → N-acetyl muramic acid; important sugar acids in bacterial cell walls
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