Four of the five answers listed below are amino acids. Select the exception
a. tryptophan
b. valine
c. alanine
d. adenine
e. leucine
D
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Helicobacter pylori is a principal causative agent of
A. gastroenteritis. B. toxic shock syndrome. C. human ehrlichiosis. D. peptic ulcer disease.
Which of the following events is least likely a result of protein phosphorylation?
A. reduction in the activity of an enzyme B. transport of the protein to the nucleus C. the specific binding of a regulatory protein D. targeting of the protein for degradation
Which of the following characteristics of transcription is the same for DNA replication?
A. The process has distinct initiation, elongation, and termination phases. B. Just one of the two strands of a DNA segment serves as a template. C. Only certain genes serve as templates at any given time. D. Nascent strands dissociate from the template. E. All of the choices given are the same for both transcription and DNA replication.
The bipolar spindle is composed of __________. Fill in the blank(s) with the appropriate word(s)