An example of a neurotransmitter that opens ligand-gated sodium channels is:
a. GABA.
b. acetylcholine.
c. ecdysone.
d. NO.
e. cortisol.
B
Biology & Microbiology
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Frameshift mutations include nucleotide substitutions. Indicate whether the statement is true or false
Biology & Microbiology
Which of the following genotypes would not usually be represented in a gamete?
A) AA B) AB C) Ab D) aB E) ab
Biology & Microbiology
Chromatids that are attached at the centromere are called ____ chromatids.
A. mother B. daughter C. sister D. programmed E. either mother or daughter
Biology & Microbiology
The common infection known as "pink eye" is an infection of the
A) sclera. B) cornea. C) iris. D) conjunctiva. E) retina.
Biology & Microbiology