5 Written Questions
5 Matching Questions
- Enzyme Activity
- Activation Energy
- a temperature- denature and breaks H bonds; pH; substrate concentration; inhibitors (antibiotics) inhibit enzymatic functions
- b antiparallel orientation of complimentary strands; DNA is supercoiled in the cells; denaturation and renaturation. ssDNA absorbs more light. RNA can compete with ssDNA hybridization.
- c Mostly single stranded; uracil in place of thymidine; mRNA; rRNA, tRNA
- d 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.
- e alters the topology of DNA molecules.
5 Multiple Choice Questions
- occupy the active site
- general formula (CH2O)n; subunits linked by glycosidic bonds; poly hydroxy aldehydes or ketones and their derivatives; functions- structural support, nutrient and energy.
- Sugar + Base
- fruit sugar mostly; but found in plants and animals also
- Allosteric proteins- dual affinity (hemoglobin); denaturation and re-naturation of proteins; enzymatic activity (catalysts)- apo enzyme and holo enzyme; lowering of activation energy; E+S <-> [ES]-> Product + Enzyme
5 True/False Questions
Tertiary → the actual sequence of the amino acids
NAM → N-acetyl neuraminic acid; important sugar acids in bacterial cell walls.
Fatty Acid → +NH3-CHR-COO-; dipolar charges neutralize each other; side chain determines the charge. Carboxylic group and amino group form the peptide bond (H2O leaves). Peptide glycosidic bonds most important; 150 in our body only 20 make proteins. you have 3AA that make a tripeptide 3^3= 27 different combinations. more than 200 AA in a protein on average.
Complex lipids → Contain elements such as phosphorus, nitrogen, and sulfur; phospholipids form membranes (have polar head group); Main structural component of the cell membrane.
Organelles → proteins and RNA