Classical conditioning such as the salivating of Pavlov's dog in response to a metronome is based on a(n)
A. operant condition.
B. sign stimulus.
C. involuntary response.
D. dishabituation.
E. critical period.
C. involuntary response.
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________ refers to the removal of an amino group from an amino acid. One mechanism for this removal is ________, in which the amino group is transferred to an acceptor molecule.
A. Deamination; transamination B. Deamination; hydrolysis C. Transamination; deamination D. Hydrolysis; transamination
Which of the following best defines autoimmunity?
a. Hypersensitivity to self-antigens b. Delayed immune system response c. Inherited immune system insufficiency d. Immunodeficiency present from birth
A secondary lateral meristem which consists of a ring of dividing cells that produce secondary xylem to its interior and secondary phloem to its exterior is known as
a. cork cambium b. wood c. vascular cambium d. stem apical meristem e. root apical meristem
What is a "cloning vector"?
A) a cell that is producing protein from a recombinant plasmid B) a protein such as HGH that is produced by biotechnology C) an enzyme used to cut or combine DNA D) a DNA vehicle that carries recombinant DNA into cells