A cell that contains 23 pairs of chromosomes divides by mitosis to form two new cells. How many pairs of chromosomes does each new cell contain?
A. 23
B. 6
C. 48
D. 12
Answer: A
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Regarding psychological health, marijuana
a. has a positive effect. b. can cause permanent problems with anxiety and depression. c. may precipitate schizophrenia in those with a genetic vulnerability. d. has long-term negative effects on cognitive functioning.
Customs, such as raising your hand to speak in class, are called:
a. social laws b. self-regulated behaviors c. social regulations d. standards
Charlie is 18 years old. If he and his 18-year-old friends are typical, about what percentage of them have smoked a cigarette in the past month?
a. 5% b. 15% c. 32% d. 50%
The term usually used to refer to the memory store that holds visual or auditory memories very briefly for a few seconds prior to further processing of the information is called:
a. sensory memory b. semantic memory c. short-term memory d. episodic memory