Axonemal microtubules are

A) dynamically unstable.
B) anchored on basal bodies.
C) randomly oriented in the axoneme.
D) required to maintain axons.
E) involved in intracellular organelle transport.


Answer: B

Biology & Microbiology

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You discover a new species of bacteria that grows in aquatic environments with high salt levels. While studying these bacteria, you note that their internal environment is similar to the salt concentrations in their surroundings

You also discover that the internal salt concentrations of the bacteria change as the salt concentration in their environment changes. The new species can tolerate small changes in this way, but dies from large changes because it has no mechanism for altering its own internal salt levels. What type of homeostatic mechanism is this species using to regulate its internal salt levels? A) conformation B) regulation C) integration D) assimilation

Biology & Microbiology

Secondary succession is likely to occur in a(n) ____.

A. burned forest only B. shallow lake only C. abandoned field only D. burned forest and an abandoned field E. burned forest, a shallow lake, and an abandoned field

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A molecule that is detected by our sense of smell first binds to

A) specific receptor proteins on the cilia of receptor cells located in the epithelium of the upper nasal cavity. B) hairs that extend beyond the mucous layer and line the upper and lower nasal cavities. C) special mechanoreceptor cells located in the epithelium of the lower nasal cavity. D) special receptor proteins located at the surface of thermoreceptor cells lining the upper nasal cavity.

Biology & Microbiology

Is Euhadra aomorensis a species by the phylogenetic species concept? Explain

What will be an ideal response?

Biology & Microbiology