Suppose you are a researcher who has discovered a mutant fungus that produces extra-thick septa which allow for only minimal transfer of nutrients through them. Compared to the normal fungus, what would you expect the mutant to do?
a. grow more slowly
b. make more extensive use of cytoplasmic streaming
c. divide more rapidly
d. digest food more efficiently
Ans: a. grow more slowly
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Many male insects have specific structures (intromittent organs) that allow transfer of sperm internally to a female's reproductive tract
These structures have a specific morphology that only fits into a female's reproductive tract of the same species, and results in internal fertilization. Having the lock-and-key fit also provides a A. pre-zygotic isolating mechanism. B. post-zygotic isolating mechanism.
Barnacles on the bellies of whales or on the shells of mollusks are examples of:
A. mutualism B. predation C. commensalism D. amensalism E. parasitism
Extinct glyptodont and living nine-banded armadillo were related according to Darwin. In what way are they related?
a. They were/are both living. b. They are both animals. c. Glyptodont is an ancestor and armadillo is a descendant. d. Glyptodont is a descendant and armadillo is an ancestor,
When a ________ enters a host cell, it loses the outermost protein layer and is then referred to by virologists as a double-layered particle (DLP).
Fill in the blank(s) with the appropriate word(s).