An advantage of the smaller size of prokaryotes, compared to eukaryotes, is
A. high surface area relative to low cell volume.
B. more rapid growth rates.
C. compartmentalization of cellular processes in membrane-bound organelles.
D. predators, parasites, and competitors constantly surround them.
E. high surface area relative to low cell volume AND more rapid growth rates.
E
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Possible evolutionary relationships, when determined solely by the study of comparative morphology, may be incorrect due to
a. morphological divergence. b. morphological convergence. c. adaptive radiation. d. extinction. e. homology.
Why might a pine seed not have a wing to disperse via air currents?
A) adapted to grow near parent tree B) wing adapted to provide extra protection C) lack of a seed coat on the pine seed D) spread via birds instead
Action potentials are normally carried in only one direction: from the axon hillock toward the axon terminals. If you experimentally depolarize the middle of the axon to threshold, using an electronic probe, then _____
A) no action potential will be initiated B) an action potential will be initiated and proceed only in the normal direction toward the axon terminal C) an action potential will be initiated and proceed only back toward the axon hillock D) two action potentials will be initiated, one going toward the axon terminal and one going back toward the hillock
Recent strategies for control and containing the spread of river blindness include:
A) antibiotics to inhibit bacterial endosymbionts within Onchocerca volvulus. B) antihelmintic drugs such as ivermectin to destroy the larval worms. C) antiprotozoan drugs such as metronidazole. D) insecticides to decrease the black fly population. E) filtering water through nylon sieves to remove Cyclops.