A person can discriminate loud and soft sounds because a loud sound:a
is sent to a different area of the brain than a soft sound.
b. produces a stronger action potential leading to the brain.
c. stimulates a greater number of hair cells.
d. stimulates the hair cells more intensely, increasing the frequency of impulses sent to the
brain.
e. has a different vibration frequency than that of a soft sound.
D
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The majority of basidiomycetes living in soil occur as
A) diploid mycelia. B) diploid basidiocarps. C) haploid mycelia. D) haploid basidiocarps.
Which of the following is not true of gene regulation by DNA looping?
A. The precise distance between the regulatory sequence and the promoter is important. B. It can result in gene repression. C. It can result in gene activation. D. It can result in the regulation of a gene even thousands of base pairs away from the regulatory site.
Describe three adaptations that enhance the function of a respiratory surface
What will be an ideal response?
Intermediate filaments are typically _______ in diameter.
a. 5-7 nm b. 8-11 nm c. 16-22 nm d. 24-26 nm e. 32-36 nm