BIS 2A KEY Exam2 Gerhart W2010

BIS 2A KEY Exam2 Gerhart W2010 - The mutation would reduce...

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1 KEY Short Answer (10 points). Exam 2, Bis2A / Gerhart / Winter 2010 Figure A 1. What is the name of the overall metabolic process outlined in the figure above (1 pt)? RESPIRATION 2. In humans, what molecule would act as the ‘acceptor’? (1 pt) OXYGEN 3. What is the name of the process which proteins B, C and D are involved in? (1 pt) ELECTRON TRANSPORT CHAIN (OR PROTON-PUMPING) 4. Protein D in the figure above has its ability to pump protons eliminated by a mutation, but retains its ability to transfer electrons from protein C to the final acceptor. How would this mutation affect the process outlined above (3 pts)
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Unformatted text preview: The mutation would reduce the proton-motive force (or reduce the hydrogen-ion gradient) (1.5 pts) and would thus reduce the number of ATP produced per glucose (1.5 pts) 5. How would the mutation (from question 4) affect the organism (in other words, how would the mutation affect overall phenotype)? (4 pts) The organism would be less efficient at extracting energy from food (2 pts) and would thus be a poorer competitor (or less fit, or slower to grow and reproduce) (2 pts) D NAD+ + 2H Æ NADH Acceptor Glucose CO2 H+ ATP ADP + Pi H+ H+ A B C...
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