The exhalation of air from human lungs is driven by _____
A) a decrease in the volume of the thoracic cavity
B) a decrease in the residual volume of the lungs
C) the contraction of the diaphragm
D) the closure of the epiglottis
E) the expansion of the rib cage
Answer: A
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Which of the following correctly describes a difference between spermatogenesis and oogenesis?
A) Spermatogenesis results in four mature sperm cells, while oogenesis results in one mature egg cell. B) Spermatogenesis results in one mature sperm cell, while oogenesis results in four mature egg cells. C) In spermatogenesis, mitosis occurs twice and meiosis once, while in oogenesis, mitosis occurs once and meiosis twice. D) Spermatogenesis results in four mature sperm cells, while oogenesis results in one mature egg cell. In spermatogenesis, mitosis occurs twice and meiosis once, while in oogenesis, mitosis occurs once and meiosis twice.
An infection spread between animals and humans is a ________.
A. zoonosis B. healthcare-associated infection C. secondary infection D. sequela
Each of the following are associated with replicons except
A) origin of replication. B) terminator sites. C) initiator proteins. D) minichromosome maintenance proteins. E) helicase loaders.
Electrolytes are critical for life for all of the following reasons EXCEPT which one?
a. They stabilize a variety of compounds. b. They act as electron carriers. c. They allow electrical gradients to exist within cells. d. All of the above are reasons why electrolytes are critical for life.