Cells that undergo apoptosis are essential to the organism into adulthood
a. True
b. False
ANSWER: False
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The two strands of a DNA molecule are held together by ________
a. phosphodiester linkages b. covalent bonds c. peptide bonds d. hydrogen bonds
Cancer cells
a. have an abnormal chromosome number. b. are unable to attach to other cells. c. divide to produce high densities of cells. d. have malformed cytoskeletons. e. fit all of these descriptions
Which does not apply to ringworm infections?
A) caused by a worm B) can be acquired by direct or indirect contact C) caused by members of the normal skin biota D) may manifest as a round skin lesion with a scaly red margin E) may occur on the feet, groin, scalp, nails, or body
Which species might experience reproductive isolation if all bees in the area were eliminated by disease?
a. brown bats b. coffee ferns c. almond trees d. dragonflies