How many coiled and fluid-filled ducts are found in each cochlea?
a. one
b. two
c. three
d. four
e. five or more
c
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Competition among members of one sex for access to the other sex is called ____ selection
Fill in the blank with the appropriate word.
An agent that would work well as an antibiotic against prokaryotic infection would target the
A) 50S large ribosomal subunit. B) RNA polymerase II. C) 40S small ribosomal subunit. D) DNA polymerase. E) mitochondria.
What happens to neurons in the approach known as optogenetics?
A) Mutations to ion channel proteins are corrected. B) The neurons are made to express light-sensitive ion channels. C) Neurotransmitter stores are depleted. D) Fusion of neurotransmitter vesicles to the presynaptic membrane is blocked. E) Leakage of cytoplasmic polyanions is blocked.
What is a sex-role reversed species?