Identify and briefly discuss two ecological roles filled by bacteria. What will be an ideal response?
Some prokaryotes are decomposers that produce nitrogen in forms usable by other organisms.
Cyanobacteria produce produce the oxygen necessary for aerobic respiration.
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Which is not considered a disadvantage of having an exoskeleton? a. Exoskeletons can get relatively heavy
b. Molting is needed to grow. c. Unique construction of the joints for appendages. d. It diminishes the ability to maintain buoyancy.
In their studies of learning in Aplysia, the primary behavioral focus of Eric Kandel and his colleagues was on
A. feeding. B. locomotion. C. sexual behavior. D. aggression. E. the gill-withdrawal reflex.
Which set of terms refers to the control of cardiac output?
a. baroreceptors, brainstem, heart b. heart, baroreceptors, brainstem c. brainstem, heart, baroreceptors d. brainstem, baroreceptors, heart
Which of the following body sites typically does NOT have normal microbiota?
A) skin B) kidney C) vagina D) nasopharynx