The perception of a certain pitch of sound depends partly on which of the following?
A. the amplitude of the sound waves
B. which bones of the middle ear are moved
C. which hair cells of the cochlea are stimulated
D. where particles settle in the semicircular canals
E. whether it is the round window or oval window that vibrates
C. which hair cells of the cochlea are stimulated
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Red-green color blindness is an X-linked recessive
trait in humans. What is the probability that a colorblind woman and a man with normal vision will have a color-blind daughter? a. 100% b. 75% c. 50% d. 25% e. 0%
Fungi may be differentiated from plants because fungi are:a
photosynthetic. b. all macroscopic. c. all multicellular. d. heterotrophic. e. all prokaryotic
Imagine that during her hunt, the same lioness wounds a gazelle. The gazelle is able to escape, but its blood pressure is rapidly decreasing as it loses blood. What can happen in the gazelle's body to increase blood pressure?
A. The pituitary gland can secrete vasopressin. B. The peripheral nervous system can signal specific arterioles to contract. C. The peripheral nervous system can signal specific arterioles to expand. D. The pituitary gland can secrete thyroid stimulating hormone (TSH).
A poorly understood, yet promising type of vaccine that causes the host to produce microbial antigens for a short time involves the use of
A. subunits. B. DNA. C. alum. D. toxoids. E. glycoproteins.