In a natural population of diverse slow-growing prokaryotic cells, what type of viruses would you expect to be most common?
A) lytic bacteriophages
B) enveloped viruses
C) icosahedral viruses
D) temperate bacteriophages
Answer: A
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Salmon are well known for their ability, after growing to maturity in the ocean, to find their way back to the streams where they were born in order to breed. For this kind of navigation, they likely:
A. use magnetotaxis only. B. use map information only. C. rely on kinesis only. D. use a variety of environmental cues. E. use only a combination of magnetotaxis and kinesis.
As global temperatures increase, Arctic sea ice
becomes thin and breaks up earlier each spring. What potential consequence described in the text might this directly lead to?
a. fewer migratory birds b. polar bears being stranded on ice flows far from land c. further global warming d. a decrease in Arctic sea levels e. an increase in polar bear populations
Four of these factors have played a part in the extinction of honeycreepers in Hawaii. Which one is the exception?
a. loss of habitat b. human activities c. imported species d. depletion of the ozone layer e. disease
Each nephron has its own blood supply.
Answer the following statement true (T) or false (F)