Which of the following represents a long-distance signaling mechanism?

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


E. endocrine signaling

Biology & Microbiology

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Compare and contrast the functions microbes serve in the digestive systems of both humans and rumens (e.g., cattle)

What will be an ideal response?

Biology & Microbiology

Reduction involves the

A) loss of neutrons. B) gain of electrons. C) increase in oxidation state. D) both choices B and C E) all of the above

Biology & Microbiology

Sea creatures which are adapted to life at the bottom of the ocean reside ____

a. in the pelagic zone b. in the intertidal zone c. in the neritic zone d. near hydrothermal vents e. in the benthic province

Biology & Microbiology

Progressive chromosomal changes as cancer develops are related to the loss of the ability to repair

____________________ in cancer cells. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology