A human cell normally contains __________ chromosomes, arranged in __________ pairs.
A. 23; 23
B. 46; 23
C. 70; 35
D. 92; 46
Answer: B
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People who, by their nature, strongly prefer familiarity and are fearful of new things have
a. withdrawal syndrome. b. introvert tendencies. c. extroversion. d. behavioral inhibition.
The defining element of "the climacteric" involves the loss of
a. the natural ability to produce children b. cancer-fighting agents. c. emotional stability. d. blood flow through the circulatory system.
According to research, approximately ____ percent of people in North America and Europe are likely to deal with a depressive disorder at some point in their lives.
A. 5 B. 11 C. 17 D. 21
The __________ system is to boys as the _________ system is to girls
a. Wolffian; Müllerian b. Stausberg; Flynn c. Müllerian; Wolffian d. Flynn; Stausberg