What role do free radicals play in aging?

A. They damage body organs and DNA.
B. They can reduce the impact of proteins on body organs and DNA.
C. They cause Alzheimer's disease.
D. They cause anti-oxidants to be produced.


Answer: A

Psychology

You might also like to view...

Morgan has become self-reflective about her thoughts and now thinks about ideas such as "democracy" and "honor," as well as makes projections regarding the future. Morgan is most likely in which cognitive stage?

a. formal operational
b. concrete operational
c. preoperational
d. preconventional

Psychology

When a health psychologist designs an intervention, she should keep in mind that:

a. a great intervention has little or no dropouts b. if a participant does not attend all of the interventions, it will not hinder the assessment of the intervention c. unhealthy behaviors can return once the intervention/treatment has stopped. d. resources should not be devoted to preventing attrition even though it is expected to happen.

Psychology

Lady Macbeth was burdened with intense guilt after her part in the murder of Duncan. As a result, she washed her hands over and over again, trying to remove the blood she thought she saw on them. Psychologists would call Lady Macbeth's hand-washing:

a. a symbolic release c. an obsession b. dramatic irony d. a compulsion

Psychology

Calvin Hall found that most dreams are about __________

a) animals. b) everyday concerns. c) bizarre events. d) strangers.

Psychology