← Exam 1 (B) Test
5 Written Questions
5 Matching Questions
- Complex lipids
- a Contain elements such as phosphorus, nitrogen, and sulfur; phospholipids form membranes (have polar head group); Main structural component of the cell membrane.
- b N-acetyl neuraminic acid; important sugar acids in bacterial cell walls.
- c an aggregation of two or more individual polypeptide chains; polymerase- polymeric heteromeric; hemoglobin- homomeric 4 subunits.
- d 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
- e Sugar + Base
5 Multiple Choice Questions
- proteins and RNA
- m. wt. 100-350; nucleotides, amino acids, monosaccharides, fatty acids, glycerol
- Sugar + Base + Phosphate; N-glycosidic bond- base; phosphodiester bond- phosphate
- 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
- Fats or triglycerides= glycerol plus one or more fatty acids.
5 True/False Questions
Important Cofactors → NAD+, NADP+, FAD, Coenzyme A
Hybridization → the actual sequence of the amino acids
Nucleic Acids → Sugar + Base
DNA → Mostly single stranded; uracil in place of thymidine; mRNA; rRNA, tRNA
Ketose → glucose and galactose