The process in which semen from a man with a low sperm count is collected during several ejaculations, stored, mixed together and then placed in a woman's vagina at the time of ovulation is called
a. artificial coitus
b. artificial insemination
c. in vitro fertilization
d. immaculate conception
b
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You form a negative afterimage of an object, and now you try to focus on a different part of the object. Why does the image move? a. Changing your fixation point causes different brain areas to become active. b. You are fatiguing a different set of receptors
c. Dominance shifts from one hemisphere to the other. d. The image is on your eyes themselves.
Which of the following statements is true regarding AIDS and its impact on the world? a. The number of childrenwho have lost their parents to AIDS has increased worldwide. b. Access to AIDS treatments around the world has decreased
c. Increased condom use in sex workers has been unsuccessfulin Cambodia and Thailand. d. Both a and c are correct
?Human personality appears to be the product of __
a. ?an unknown factor that researchers have been unable to identify b. ?many genes and multiple environmental events c. ?genes involved in the production of serotonin and dopamine d. ?family upbringing and culture
The reappearance of a learned response after extinction has occurred is called _____
A) counterconditioning B) instinctive drift C) spontaneous recovery D) stimulus substitution