Sex cells have only half of the 46 chromosomes that were present before cell reduction occurs. What term is used to describe this cell reduction process?
a) meiosis
b) mitosis
c) embryonics
d) polygenesis
a
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Physiological needs must be met
a. by caretakers. c. in order to be happy. b. by the environment. d. in order to survive.
A classmate designs the following experiment. What advice would you give him to improve upon it? Group A M T M Group B M T(zero level) M
a. to specify both groups as receiving zero level of T b. not to perform a pretest-posttest c. to randomly assign participants to groups d. to randomly select participants from the population
Histamine activity in the brain is typically associated with
A. satiety. B. dreaming. C. drowsiness. D. alertness.
Drugs used to treat disorders are referred to as:
a. pharmacotherapeutic drugs. b. psychoactive drugs. c. alternative medicines. d. recreational drugs.