Bats, by emitting high-pitched sounds, can detect distant objects via:a
olfaction.
b. echolocation.
c. lateral line organs.
d. sensory adaptation.
e. ommatidia.
B
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The addition rule requires which of the following?
A. More than one outcome (such as two different genotypes resulting in black fur) can occur simultaneously in an organism B. Two outcomes such as having the genotype BB or Bb. are mutually exclusive in an organism.
The spindle apparatus becomes visible during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.
Classification.Respond to the following statements in reference to the five animal phyla listed below.
A. This phylum has no tissues or organs. B. C. Members of this group have a brain with nerve cords, have a saclike or branched gut, and lack a circulatory system. D. Tapeworms are members of this phylum. E. Members of this phylum have a pseudocoelomic cavity. F. Members of this phylum have a brain with a ventral nerve cord, a complete gut, and a circulatory system that is usually closed.
Drug-resistant populations of microbes arise when
A. exposure to drugs selectively kills sensitive cells, allowing overgrowth of resistant cells. B. exposure to drugs causes mutations that produce resistance. C. resistant cells become numerous in a population due to their greater vigor. D. the patient becomes immune to the drug. E. synergy between medications occurs.