Erythrocytes are produced in the
A) bone marrow. B) heart. C) spleen. D) liver.
A
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Resistance of some animals to certain viral diseases is based on
A. lack of spikes for attachment. B. phagocytosis of the virus by the host cell. C. the presence of the viral envelope. D. lack of specific receptors on the host cell.
Which type of bacteria grows in the presence or absence of oxygen?
a. obligate aerobes b. obligate anaerobes c. facultative anaerobes d. obligate aerobes and obligate anaerobes e. obligate anaerobes and facultative anaerobes
__________ is one form of learning that happens
only during a sensitive period early in life. Fill in the blank(s) with the appropriate word(s).
____ is the first stage of aerobic respiration and fermentation.
A. Anaerobic B. Substrate-level phosphorylation C. Glycolysis D. Cellular respiration E. Pyruvate