Ventilation causes alveoli of the lungs to have ________ the blood in pulmonary capillaries.
A. the same PO2 and PCO2 as
B. a higher PO2 and a lower PCO2 than
C. a lower PO2 and a higher PCO2 than
D. No answer is correct.
Answer: B
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In a simple synapse, neurotransmitter chemicals are received by _____
A) the postsynaptic membrane B) the presynaptic membrane C) axon hillocks D) cell bodies E) ducts on the smooth endoplasmic reticulum
The nucleotides within DNA are composed of a
A. phosphate group, ribose sugar, and nitrogenous base. B. sulfur group, ribose sugar, and nitrogenous base. C. phosphate group, deoxyribose sugar, and nitrogenous base. D. sulfur group, deoxyribose sugar, and nitrogenous base. E. phosphate group, hexose sugar, and nitrogenous base.
During periods of rapid weight gain, people often go directly from one ________ phase into the next ______ phase without experiencing an intervening ________ phase.
Fill in the blank(s) with the appropriate word(s).
If this lab included culturing a sample taken by scraping your teeth, which species of streptococci might you grow on your blood agar plate?
A) S. pyogenes B) S. agalactiae C) E. faecium D) S. mutans