What is the major non-enzymatic protective mechanism against oxidative stress?
A. Beta-carotene
B. Ascorbic acid
C. Alpha-tocopherol
D. Glutathione
Answer: D
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Which of the following muscles does not depress the hyoid?
A. Sternohyoid B. Sternothyroid C. Thyrohyoid D. Mylohyoid
The biconcave cells in blood that lack nuclei when they are mature are the
A) white blood cells. B) macrophages. C) platelets. D) red blood cells.
During exercise, skeletal muscle _________.
A) vasoconstriction increases peripheral resistance to blood flow. B) vasodilation increases peripheral resistance to blood flow. C) vasoconstriction decreases peripheral resistance to blood flow. D) vasodilation decreases peripheral resistance to blood flow. E) None of the answers are correct.
A secondary spermatocyte containing ______ (how many?) chromosomes divides to form ______ (how many) spermatids, each containing _________ chromosomes, and each spermatid undergoes the process called __________ to become spermatozoa
Fill in the blank(s) with correct word