The Tricarboxylic Acid Cycle serves all of the following functions EXCEPT:
A. It is the major mechanism for the generation of ATP
B. It supplies key intermediates for the ultimate synthesis of amino acids, lipids, purines, and pyrimidines
C. It is the primary means in both bacteria and eukaryotic cells for the conversion of glucose to pyruvate
D. It serves as the final common pathway for the complete oxidation of amino acids, fatty acids, and carbohydrates
Ans: C. It is the primary means in both bacteria and eukaryotic cells for the conversion of glucose to pyruvate
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For reciprocal altruism to work, individuals must be able to:
A. recognize one another. B. remember previous interactions. C. calculate the fitness value of individual interactions. D. recognize one another and remember previous interactions. E. recognize one another, remember previous interactions, and calculate the fitness value of individual interactions.
All of the following choices are descriptive of a population experiencing exponential population
growth EXCEPT ____.
a. resources are limited b. graph of growth produces a "J" shaped curve c. per capita growth rate remains constant d. ?N/?t is increasing e. population increases at an increasing rate
Assuming no change in either the internal or external calcium ion concentration, at what membrane potential would there be no net movement of calcium across the membrane?
A cell biologist interested in the transport of calcium ions (Ca2+) across the plasma membrane of bacterial cells made the following measurements on bacterial cells at 25°C: Vm = ?150 mV [Ca2+] outside = 20 mM [Ca2+] inside = 0.4 mM A) ?25 mV B) ?50 mV C) 0 mV D) +25 mV E) +50 mV
One component of the cell membrane functions as a selective barrier, and one component has specific functions such as transport, recognizing other cells, and binding to other cells. Which pair of terms refers to these two components, respectively?
a. carbohydrate and nucleic acid b. lipid and carbohydrate c. protein and carbohydrate d. lipid and protein