The trophoblast will eventually differentiate to become the
A) fetus.
B) placenta, umbilical cord, amniotic sac, and other structures.
C) embryo.
D) umbilical cord and fetus.
B
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Dr. Rea is a psychologist who is about to conduct a study using human participants. The first thing Dr. Rea should have his participants do when they arrive at the lab is.
A. Read and sign a statement waiving their right to withdraw from the study B. Begin participating in the study C. Read and sign an informed consent form D. Go through a debriefing procedure
One type of photoreceptors that detect colour, operate in daylight, and permit us to focus on fine detail is called:
A) cones. B) rods. C) retinal ganglion cells. D) area V1 neurons.
Cigarette smoking reaches a peak in
A) adolescence. B) middle adulthood. C) old adulthood. D) young adulthood.
When Gordon Allport (1954) described stereotyping as "the law of least effort," he was suggesting that stereotypes arise
a. from personal experience. b. to help us conserve cognitive energy. c. at the service of the ego. d. to justify objectionable actions quickly and easily.