When similar structures arise indecently in different species, it is called __________________.
A. Convergent evolution
B. Divergent evolution
C. Mutation
D. Vicariance
E. Natural selection
A. Convergent evolution
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Avery, MacLeod, and McCarty's experiments revealed that the transforming principle had all of the following properties except
A. its activity was destroyed by treatment with proteases. B. its activity was unaffected by RNA-digesting enzymes. C. its activity was unaffected by lipid extraction. D. its activity was destroyed by treatment with DNA endonucleases.
Cold, fast-moving freshwater holds ____ than still, warm water
a. more oxygen b. less oxygen c. more carbon dioxide d. less nutrients e. more nutrients
Which of the following statements about the electron transport chain is true?
a. Protons are pumped out of the mitochondria by the complexes of the electron transport chain. b. The proton gradient established during electron transport is a form of potential energy. c. The electron transport chain can be found in the mitochondria of aerobic bacteria and other cells. d. The movement of protons down a concentration gradient is an endergonic process. e. ATP synthesis associated with the electron transport chain is an example of substrate level phosphorylation.
Plants connected by mycorrhizal fungi:a
must be of the same species. b. can only exchange carbon dioxide in one direction. c. are an excellent example of a parasitic relationship. d. compete for light. e. exchange organic materials in both directions.