The bright coloration of male birds is often the result of what?

(A) gene flow.
(B) genetic drift.
(C) sexual selection.
(D) stabilizing selection.
(E) coevolution.


Ans: (C) sexual selection.

Biology & Microbiology

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When acetylcholine stimulates the opening of ligand-gated ion channels on a postsynaptic cell, what is this event called?  

A.  neuromuscular junction B.  temporal summation C.  inhibitory postsynaptic potential (IPSP) D.  excitatory postsynaptic potential (EPSP) E.  synaptic integration

Biology & Microbiology

Sewage treatment is a way to prevent raw sewage causing

a. oil spills. b. oligotrophy. c. eutrophication. d. global warming. e. coastal erosion.

Biology & Microbiology

The yield of ATP per glucose in fermentation

is

a. 2 b. 6 c. 12 d. 36 e. 40

Biology & Microbiology

The pleasurable effects of cigarette smoking are due to an increase in the release of the neurotransmitter ________

Fill in the blank(s) with correct word

Biology & Microbiology