The neurotransmitter, __________, is used by motor neurons to communicate with muscle cells.

A. acetylcholine

B. GABA

C. glutamine

D. fatty acids

E. serotonin


A. acetylcholine

Biology & Microbiology

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Reproduction in prokaryotes occurs primarily through the process known as

(a) mitosis. (b) cytokinesis. (c) furrowing. (d) fission.

Biology & Microbiology

One key principle of natural selection is that there is competition for resources

A. true B. false

Biology & Microbiology

The adrenal cortex hormone that influences metabolism and immunity is the _____________.

A. adrenal medulla B. adrenal gland C. adrenal cortex D. cortisol E. gonads

Biology & Microbiology

Some of the high G + C Gram-positive bacteria such as Arthrobacter divide by means of snapping division.

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

Biology & Microbiology