Which of the following statements about the "random events" theory of biological aging is true?
A) Genetic engineering that manipulates telomere activity has extended the lifespan of human cells.
B) Animal studies confirm an increase in DNA breaks and deletions and damage to other cellular material with age.
C) Because longevity tends to be a family trait, environmental factors have minimal impact on the aging process.
D) Humans who maintain higher levels of physical activity over several decades reduce their maximum lifespan.
B
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In Rosenfeld's study of very old men, approximately what percent reported that their lives were rich and rewarding?
a. 10-15% b. 25-30% c. 50% d. 90%
A job consists of tasks or duties a person does for pay
Indicate whether the statement is true or false
People in a conversation generally pick up on each other's rhythms because of the activation of endogenous __________, which are neural circuits that fire at regular intervals and thus serve as timekeepers for the brain.
a. Counters b. Amplifiers c. Oscillators d. Power supplies
_____________ found that symmetry correlates positively with the number of life time partners
a. Bellis and Baker. b. Thornhill and Gangested. c. Whitten. d. Zahavi.