Cells that are programmed to die, shrivel and shrink in a process called
A. encoded death.
B. necrosis.
C. totipotency.
D. induction.
E. apoptosis.
Answer: E
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Which of the following molecules would not easily diffuse across a plasma membrane?
A. small polar molecules B. large polar molecules C. gases D. both small and large polar molecules
J.D., a black Labrador retriever, is heterozygous (Bb) for coat color, where B is black and b is brown. J.D. therefore has a black coat. Bb is J.D.'s
A) genotype. B) hemizygous state. C) gene conversion. D) phenotype. E) homozygous state.
What test result indicates that the unknown can utilize citrate as its sole carbon source?
a. The medium turns pink. b. The culture becomes turbid. c. It turns the medium black. d. The medium turns blue.
The relationship between DNA and histones is most like
A) an egg yolk inside of an egg. B) a spoon cradling some peas. C) thread wrapped around a spool. D) the candy shell surrounding the chocolate in a piece of M&M candy.