The process by which successful traits become more common in subsequent generations is called ____
a. speciation
b. mutation
c. natural selection
d. genetic drift
e. gene flow
ANSWER: c
Biology & Microbiology
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Which of the following structures are NOT used by chemical synapses during signal transmission?
a. gap junctions b. ligand-gated receptors c. Ca2+ d. vesicles e. neurotransmitters
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What molecule releases energy to power the transport work across cell membranes?
A) ADP B) ATP C) NADP D) NADPH
Biology & Microbiology
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A) a sodium ion B) a small, polar molecule like water C) a large, polar molecule like glucose D) a small, nonpolar molecule like oxygen (O2)
Biology & Microbiology