When a cell secretes a growth factor that binds to receptors on its own membrane preventing it from proliferating, this is an example of

A. endocrine signaling.
B. autocrine signaling.
C. paracrine signaling.
D. contact-dependent signaling.
E. direct intercellular signaling.


Answer: B

Biology & Microbiology

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One of the first successful applications of genetic engineering was the commercial production of ____

a. clotting factor b. insulin c. hemoglobin d. collagen e. human growth factor

Biology & Microbiology

A population of rabbits introduced into an island grew rapidly for a few years and then the growth slowed down and stabilized. Why did the population become stable?

A) The carrying capacity was reached. B) Environmental resistance declined. C) A bust cycle was about to begin. D) The rate of immigration declined. E) The value of r decreased.

Biology & Microbiology

The cri du chat syndrome represents a chromosomal mutation type termed

What will be an ideal response?

Biology & Microbiology

The sugar in DNA is deoxyribose while the sugar in RNA is ribose.

Answer the following statement true (T) or false (F)

Biology & Microbiology