If you experimentally reduce the concentration of K+ in the extracellular fluid surrounding hair cells in the inner ear, the result would be like which of the following?
A) decreasing the volume of sound reaching the hair cells
B) increasing the volume of sound reaching the hair cells
C) decreasing the frequency of sound reaching the hair cells
D) increasing the frequency of sound reaching the hair cells
Answer: A
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A haploid structure contains __________________, and a diploid structure contains _______________
A. one set of chromosomes (1n); two sets of chromosomes (2n) B. three sets of chromosomes (3n); two sets of chromosomes (2n) C. two sets of chromosomes (2n); one set of chromosome (1n) D. one set of chromosomes (1n); three sets of chromosomes (3n)
An advantage to sexual reproduction is
A) that there is no need to find a mate. B) the potential for high population growth. C) that offspring are adapted to the local environment. D) increased genetic variability.
Compare and contrast the structure and function of ion channel-linked receptors, G protein-linked receptors, and
enzyme-linked receptors. In general, how do they differ from intracellular receptors? What will be an ideal response?
Evidence from yeast suggests that the maturation-promoting factor of sea urchins is
a. a cyclin. b. MFP. c. an S nuclease. d. a Cdk. e. a Cdk/cyclin phosphatase.