________ is usually performed between the tenth and twelfth weeks of pregnancy, but it can be performed as early as the fifth week
a. Amniocentesis c. Fetal blood sampling
b. Ultrasonography d. Chorionic villus sampling
D
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Imagine that you have a bag filled with 10 pink marbles and 5 black marbles. What is the probability of pulling a pink marble from the bag?
a. .25 b. .33 c. .50 d. .67
A(n) ______ is a proposed mechanism to explain how something, usually more complex than the proposed mechanism, works.
A. assumption B. model C. construct D. hypothesis
Your roommate has become very irritable lately and is having trouble concentrating in class. He's gained about 30 pounds since he came to school and you're feeling a little grouchy too because his snoring is keeping you awake at night. If you could give him advice, what might it be? a. He might need to visit his physician and see if he is suffering from obstructive sleep apnea hypopnea
b. He is probably suffering from cataplexy during the night due to narcolepsy. c. He needs to be on a regular dose of sleep medication, as he is not getting enough sleep. d. He should make an appointment with a psychiatrist because he seems to be suffering from a psychotic disorder.
Three-year-old Matty was shown a video of an adult uttering ba ba synchronized with the audio of an adult uttering ga ga. When asked what he heard, Matty reported hearing a very different utterance. This result suggests that
a. visual cues influence the perception of auditory cues when the two are in conflict. b. Matty may have a hearing problem that requires immediate treatment. c. three-year-olds have already lost the ability to discriminate between some phonemes. d. three-year-olds are not yet proficient at discriminating phonemes.