1. Over the span of 10 hours, an exponentially growing cell population increases
ID: 164286 • Letter: 1
Question
1. Over the span of 10 hours, an exponentially growing cell population increases from 2 x 103cells/mL to 2x107 cells/mL what are the generation time and number of generations that have occurred? For full credit write the equations you will use, the given information with correct the variable designation (t n, g, k, Niv or No), substitute the numbers into the equation then box the solution with the correct units. (4-3, 4; A) 3pts H3C-CO-C00 CoA NAD- H3C-CO-S-CoA NADH H CO2 A. What is happening to the Carbon containing reactant molecule turning into coz? How do you know? (5-1; U) (1.5 pts) B. In reference to the Carbon containingreactant molecule turning into CO2, is this an anabolic or catabolic reaction? How can you tell? (5-1; U) (1.5 pts)Explanation / Answer
Citrate synthase catalyses the first step in citric acid cycle. It catalyses the condensation acetate residue from acetyl coenzyme A(2Carbon) and a molecule of oxaloacetate( 4 carbon) to form the six-carbon citrate molecule. The reaction is as follows-
acetyl-CoA + oxaloacetate + H2O citrate + CoA-SH
After a series of reactions involving oxidation, reduction, decarboxylation it produces ATP and NADH. For one molecule of glucose, 2 actyl CoA molecules enter citric acid cycle and produce 2 ATP, 6 NADH, and 4 CO2.
If citrate synthase is inhibited then this energy production will not occur as it is the key enzyme in TCA cycle. Hence No ATP is produced from Citric acid cycle.
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