The phase of the bacterial growth curve that shows the maximum rate of cell division is the
A. log phase.
B. prophase.
C. stationary phase.
D. lag phase.
E. death phase.
Answer: A
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Which of the following are used solely to study protein-protein interactions? Select all correct choices
A. Western blotting B. immunoprecipitation C. tandem affinity purification (TAP) D. yeast two-hybrid analysis E. yeast three-hybrid analysis
The observation that schizophrenia is associated with duplications of a certain copy number variant (CNV), while autism spectrum disorders are associated with deletions of the same CNV, suggests that _____
a. CNV mutations are present in all psychiatric disorders b. both disorders have identical phenotypes c. both disorders have an environmental component d. both disorders share common developmental pathways e. neither disorder has a genetic component
Pyruvate can be a substrate or product involved in each of the following except
A) fermentation. B) aerobic glycolysis. C) gluconeogenesis. D) amino acid biosynthesis. E) Pyruvate can be involved in all of the above.
Horses and tapirs have a common ancestor, but now look very different. Horses now are grassland animals adapted for grazing on grass and shrubs. Tapirs are jungle animals that live in dense forests and eat fruit, leaves, and aquatic vegetation. Which of the following led to the development of such differences in the two species?
A. selective breeding B. convergent evolution C. DNA hybridization D. natural selection