Red-green color blindness is more common in males than females because
A) the red pigment gene is on the X chromosome, the green is on an autosome.
B) the green pigment gene is on the X chromosome, the red is on an autosome.
C) the rhodopsin gene is on the X chromosome.
D) both the red and the green pigment genes are on the X chromosome.
E) both the red and the green pigment genes are on an autosome.
D) both the red and the green pigment genes are on the X chromosome.
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Light energy passes from phycobiliproteins to reaction centers in
A) cyanobacteria. B) green sulfur bacteria. C) purple bacteria. D) most photosynthetic bacteria.
The I- is transported from the blood capillaries to the lumen for the follicle cells via
a) Na/I Sympoter b) Iodide Transporter c) Na/I symporter and Iodide Transporter d) None of the above' e) All of the above
Marathon runners are long-distance runners (marathons are races that are 26.2 miles long). Studies have shown that the muscles of marathon runners contain an abundance of slow-twitch muscle cells. Which of the following statements about these fibers is
true? A) Slow-twitch fibers have lots of mitochondria to make ATP aerobically. B) Slow-twitch fibers have lots of mitochondria to make ATP through fermentation. C) Slow-twitch fibers have few mitochondria and make ATP aerobically. D) Slow-twitch fibers have few mitochondria and make ATP through fermentation.
Which of the following statements about diabetes mellitus is NOT true?
A. Type I diabetes is much more common than type II. B. Obesity can cause diabetes because adipose tissue produces a substance that impairs insulin receptor function. C. Symptoms of diabetes include excessive thirst, frequent urination, and glucose in the urine. D. Type I diabetes occurs as a result of destruction of the insulin-producing cells. E. One method of treating type II diabetes is exercise and a low-fat, low-sugar diet.