At times, for unknown reasons, a zygote divides into two cells. The result of this is __________
a) dizygotic twins.
b) cancer.
c) a fetus.
d) monozygotic twins.
d
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An instructor wishes to find out whether a new teaching method is superior to his usual procedures, so he conducts an experiment. Everyone in his classes is quite excited about the prospect of learning under the new procedure, but he cannot administer the new teaching method to everyone: a random half of the students receive the new method and the remaining half receive the old method. What is
the most obvious flaw in this experiment? a. Subjects should have been systematically assigned to groups. b. The sample is not representative of the population. c. Placebo effects or experimenter bias are likely to affect results. d. Distortions in self-report will affect results.
What is the most widely held opinion concerning the effect of mood and attitude on cancer treatment? a. Mood and attitude have no impact on the course of cancer
b. Mood and attitude influence the course of cancer only in females, not in males. c. Research so far is unable to show conclusively that mood and attitude affect cancer treatment. d. Positive moods have been shown to cause cancer remission.
In a typical night, we spend about ____ of our sleep time in REM
a. 20% c. 80% b. 50% d. 95%
One part of language that is synonymous with comprehending is __________
Fill in the blanks with correct word