What structure of a sarcomere contains proteins that connect and stabilize thin filaments?
A) Z line
B) H band
C) I band
D) A band
A
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What role do the arytenoid cartilages play in speech?
A. Slight movements of the cartilages help shape sound into intelligible speech. B. Sound is produced when the cartilages are adducted and passing air causes them to vibrate. C. They provide structural support for the vocal folds. D. They control the movement of the corniculate cartilages during speech production. E. When they rotate they either adduct or abduct the vocal folds and influence pitch.
Excess hydrogen ion is eliminated from the body largely by
A) sweating. B) the kidneys. C) the liver. D) the feces. E) buffers.
The blood type that contains both antigens A and B is ________
A) AB B) A C) B D) O
An allele that masks the effect of another is
A. dominant. B. heterozygous. C. homozygous. D. recessive.