The properties of a cell that are determined by its DNA composition are its
A. phenotype.
B. genotype.
C. metabolism.
D. nucleoid.
A
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Which of the following is NOT a reason for the
rapid explosion of the human population?
a. increase in carrying capacity b. expansion into new habitat c. removal of limiting factors d. reproduction occurring earlier in the life cycle e. longer generation times
The class of lever in which the effort is located between the fulcrum and the load is called
a. class I. b. class II. c. class III. d. class IV.
A karyotype
a. compares one set of chromosomes to another. b. is a visual display of chromosomes arranged according to size. c. is a photograph of cells undergoing mitosis during anaphase. d. of a normal human cell shows 48 chromosomes. e. cannot be used to identify individual chromosomes beyond the fact that two chromosomes are homologues.
Many antibiotics selectively kill bacteria and not mammalian cells because they block synthesis of the ________.
A. cytoplasm B. cytoskeleton C. cell wall D. nucleus E. plasma membrane