Cells obtain energy primarily
A) to assist in the movement of blood by decreasing its density by the addition of gases.
B) to increase the energy level of the cells.
C) through gas exchange, gain of O2, and elimination of CO2.
D) through aerobic metabolism.
E) None of the answers are correct.
D) through aerobic metabolism.
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Which of the choices below is not a function of testosterone?
A) stimulates the male pattern of development B) contributes to male sexual behavior and spermatogenesis C) stimulates protein synthesis D) stimulates mammary gland development
Fertilization occurs when the
A. sperm cells enter the vagina. B. oocyte is implanted in the uterus. C. oocyte ruptures from the ovary. D. sperm cell head enters the zygote. E. nuclei of the secondary oocyte and the sperm cell unite.
Which of the following is not part of the gastrointestinal (GI) tract?
a) pharynx b) pancreas c) esophagus d) stomach
How many electrons are in the outermost shell of an atom with 15 electrons?
A) 5 B) 2 C) 8 D) 10