Which of the following statements about cellular aging is true?
Cells can replicate indefinitely, but errors do occur.
Aging may be caused by the inevitable loss of the ability of cells to duplicate
perfectly.
Damage is caused by free radicals that slow down the cell duplication
process.
Cells from adults are able to duplicate more quickly and more times than are
cells from embryos.
Aging may be caused by the inevitable loss of the ability of cells to duplicate
perfectly.
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Your neighbors eat out quite a bit, and most of it is fast food. Their 8-year-old daughter is diagnosed as obese by her doctor. Which of the following statements is most accurate?
a. They should not be concerned because most children outgrow their obesity. b. As long as they emphasize that "beauty is from within," they should not be concerned about emotional problems. c. They should be concerned because she is at heightened risk for kidney failure and blindness. d. They should be concerned because of an increased chance of ADHD correlated with the stress of being obese.
Researchers wanted to determine if memory is affected by the way in which material is encoded. One group of research participants formed mental images of the objects to be remembered, while another group repeated the names of the objects to be remembered. The design of this study is consistent with:
a. correlational research b. an experimental research procedure c. case study research d. naturalistic observation