What stimulus can induce liver cells to proliferate?
a) glycogen buildup in the liver
b) interaction with an appropriate antibody
c) interaction with an appropriate antigen
d) surgical removal of part of the liver
d) a buildup of bile in the liver
Ans: d) a buildup of bile in the liver
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DNA probes
A. may be obtained from denatured tagged dsDNA. B. may be obtained from similar genes from another organism. C. may be synthesized usually using information based on the protein sequence. D. are usually tagged dsRNA. E. may be obtained from denatured tagged dsDNA, may be obtained from similar genes from another organism, AND may be synthesized usually using information based on the protein sequence.
First line of defense may be described as
A) the release of prostaglandins and leukotrienes in response to microbes. B) intact skin, mucous membranes, sebum, tears, and so forth. C) damage resulting in cell lysis. D) the coating of a pathogen by complement. E) nonspecific leukocytes that secrete toxins onto the surface of virally infected cells.
During DNA replication, each new strand begins with a short
A. amino acid primer. B. DNA primer. C. lipid primer. D. RNA primer. E. hydrophilic primer.
An organ is composed of:
A) a group of cells. B) multiple organisms. C) identical cells and tissues. D) various types of tissues.