________ would keep a population in Hardy-Weinberg equilibrium.
A. Gene flow
B. Genetic drift
C. Mutation
D. Random mating
E. Selection
Answer: D
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Which of the following is a current approach for determining the features of the last universal common ancestor (LUCA) (select all correct choices)?
A. Delete genes one by one in a simple DNA virus and determine which genes are essential for infection. B. Assemble a list of genes and other features that are currently shared by plants, animals, and bacteria. C. Assemble a list of genes and other features that are currently shared by cells representing the three domains. D. Define the minimum set of genes necessary to support a simple cell. E. Define the minimum set of genes necessary to support an archaeal cell.
NADH concentrations serve to regulate oxidative decarboxylation and the TCA cycle. Which of the following enzymes is not regulated by NADH?
A) pyruvate dehydrogenase B) isocitrate dehydrogenase C) ?-ketoglutarate dehydrogenase D) malate dehydrogenase E) succinate dehydrogenase
The cavity of the sac that will directly enclose the
embryo is indicated by a. A. b. B. c. C. d. D. e. E.
Which is true about the energy of activation?
A. In any one metabolic pathway, all steps will have the same energy of activation. B. Adding the correct enzyme can lower the energy of activation. C. Energy of activation is the difference between the energy of the reactant and the energy of the product. D. Energy of activation is measured as the energy that is released after a reaction occurs. E. The energy of activation is always lower than the energy of the reactant.