What are free radicals?

A. highly reactive and corrosive substances that form when cells are exposed to oxygen
B. tiny caps of DNA located at both ends of the chromosomes
C. mutations that occur with repeated divisions of cells
D. toxins that interfere with the immune system


Answer: A

Psychology

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What would best demonstrate that an individual item on a test is biased against women?

a. The item was written by a committee composed of men. b. More than half of all women answer the item incorrectly. c. The item is one of the easiest for men, but one of the harder items for women. d. The women with the best overall scores answer this item correctly more than others do.

Psychology

Freud proposed the concept of __________ to describe the spilling forth of psychic energy that had been repressed by feelings of guilt

a. resistance c. id b. catharsis d. superego

Psychology

Transcranial magnetic stimulation uses a powerful magnetic field to temporarily stimulate or inactivate neural circuits

Indicate whether this statement is true or false.

Psychology

Less is known about long-term adjustment following divorce among middle-aged men, perhaps because __________

A) so few men divorce in middle adulthood B) they often die within 5 to 10 years after divorce C) they are less likely to participate in research studies D) most enter new relationships and remarry within a short time

Psychology