By a currently favored hypothesis, species richness of a community is greatest between physical disturbances of _____ intensity or frequency
a. low c. high
b. intermediate d. variable
B
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Suppose that R is the dominant allele for a round pea, and r is the recessive allele for a wrinkled pea. Suppose also that you cross plants having round peas with plants having wrinkled peas. Which of the following is the most likely result?
a. The offspring will be neither round nor wrinkled. b. The offspring will be mostly wrinkled. c. The offspring will all be wrinkled. d. The offspring will all be round.
In cell movement, branched actin filament growth pushes against the cell membrane. Proteins involved in this process include all of the following except
a. Arp2/3 b. profilin c. vinculin d. WASP/Scar
How is the lytic cycle different from the lysogenic cycle with respect to the infected host cell?
a. The host cell is allowed to live during the lytic stage. b. The host cell can only divide during the lytic stage. c. The host cell dies during the lytic stage. d. The viral DNA may integrate into the host genome during the lytic stage.
The most common form of skin cancer is found most frequently on the head, neck or back.
a. true b. false