Growth factors such as platelet-derived growth factor function in:

A. autocrine signaling.
B. paracrine signaling.
C. endocrine signaling.
D. juxtacrine signaling.


B

Biology & Microbiology

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If you tracked an individual X chromosome from a male to his first generation offspring, then to his second generation offspring, what pattern would you see?

A. His X chromosome would be found only in his daughters and granddaughters. B. His X chromosome would be found only in his sons and grandsons. C. His X chromosome would be found only in his daughters and grandsons. D. His X chromosome would be found only in his daughters, then in both his granddaughters and grandsons. E. His X chromosome would be found only in his sons, then in both his granddaughters and grandsons.

Biology & Microbiology

Which viral life cycle would result in a quicker death for an infected cell?

A. The prophage cycle B. The retroviral cycle C. The lysogenic cycle D. The lytic cycle

Biology & Microbiology

________ arise out of deep water and have a lagoon in the center of it

a. Barrier reefs b. Atolls c. Patch reefs d. Fringing reefs

Biology & Microbiology

Equilibrium theories of species diversity have been applied to islands and to larger, continental regions. Which of the following processes is likely to play a greater role in the determination of equilibrium diversity in a continental region?

A) extinction of species B) immigration of species from elsewhere C) formation of new species

Biology & Microbiology