Tubal ligation _____
A) reduces the incidence of ovulation
B) prevents fertilization by preventing sperm from entering the uterus
C) prevents sperm from exiting the male urethra
D) prevents oocytes from entering the uterus
D
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Body movements that are primarily conscious and voluntary are controlled by the ____ nervous system
1.autonomic 2.central 3.peripheral 4.somatic
Most evidence indicates that skin color is controlled by ____ gene pair(s)
a. one b. two to three c. ten d. five to seven e. fifteen
According to Oparin's theory for the origin of life, the prebiotic atmosphere:
A) already contained some primitive RNA molecules. B) basically was very similar to the atmosphere of today. C) contained many amino acids. D) had an abundance of methane, ammonia, and water. E) was rich in oxygen.
Which component of the electron-transport chain is required to pair electrons with molecular oxygen?
Group of answer choices A. ubiquinone B. cytochrome c C. cytochrome c oxidase D. NADH dehydrogenase E. cytochrome b-c1 complex