Which of the following statements about myopia is correct?
a. The curvature of the lens is uneven.
b. A near source of light is focused on the retina without accommodation.
c. A convex lens is used to correct the condition.
d. The images from the two eyes are not fused within the cortex.
e. There is increased intraocular pressure.
B
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How many thin filaments are on each end of a sarcomere?
a. 6 b. 5 c. 4 d. 3 e. 2
The carbon skeleton of an amino acid can generate ATP through:
A) glycolysis or the citric acid cycle. B) ?-oxidation. C) oxidative deamination. D) the electron transport chain or chemiosmosis.
Depolarization of the oocyte plasma membrane occurs when the first sperm attaches to the integrin ?6?1. This is called the
A. slow block to polyspermy. B. acrosomal reaction. C. fast block to polyspermy. D. fertilization. E. spermiogenesis.
What structure caps the head of a mature sperm and enables the sperm to penetrate an egg?
A. axoneme B. acrosome C. nucleus D. mitochondria E. flagellum