During this phase of mitosis, chromosomes are aligned in the center of the cell
A) Anaphase B) Prophase C) Telophase D) Metaphase
D
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Innate immune system defenses include ________.
A) B cells B) T cells C) plasma cells D) phagocytosis
Proteases and acrosin are enzymes. How do they function in reproduction?
A) They act to break down the protective barriers around the egg, allowing the sperm to penetrate. B) They direct the sperm to the egg through chemical messengers. C) They neutralize the mucous secretions of the uterine mucosa. D) Their function is unknown.
A person warming up after being cold feels a warm rush as blood flows quickly to the
peripheral appendages. Nitric oxide is important in this situation because it A) raises blood temperature. B) relaxes the smooth muscle in the blood vessel wall. C) raises blood pressure. D) enhances gas exchange.
If the probability of an event occurring is 50%, what is the probability of that event occurring 5 times in a row?
A) 1/20 B) 1/32 C) 1/2 D) 1/8