Which of these structures can be swiveled around in some animals to better locate a sound?

A) Anvil B) Hammer C) Pinna D) Cochlea


C

Biology & Microbiology

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Which of the following is characteristic of a steroid hormone action?

A) protein phosphorylation B) cell-surface receptor binding C) internal receptor binding D) second messenger activation

Biology & Microbiology

Most analyses of population distributions along environmental gradients point toward the individualistic view of

communities.

Indicate whether the statement is true or false.

Biology & Microbiology

Which characteristic is least applicable to the development of science?

a. evaluation of data b. personal conviction c. prediction d. systematic observation e. sharing of ideas

Biology & Microbiology

Adult male humans generally have deeper voices than do adult female humans, which is the direct result of higher levels of testosterone causing growth of the larynx

If the fossil records of apes and humans alike show a trend toward decreasing larynx size in adult females and increasing larynx size in adult males, then _____. A) sexual dimorphism was evolving over time in these species B) intrasexual selection seems to have occurred in both species C) stabilizing selection was occurring in these species concerning larynx size D) selection was acting more directly upon genotype than upon phenotype

Biology & Microbiology