A bacterial ________ is the nontranscribed region of the DNA to which RNA polymerase binds in order to initiate transcription.
A. promoter
B. initiator
C. operon
D. operator
Answer: A
Biology & Microbiology
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The negatively charged component of the atom is the
A. proton. B. nucleus. C. neutron. D. electron.
Biology & Microbiology
How can radioisotopes be used as tracers to study biological processes?
What will be an ideal response?
Biology & Microbiology
Digestion of protein begins in the
A. mouth. B. stomach. C. duodenum. D. small intestine.
Biology & Microbiology
Which of the following statements about pH is true?
A) The pH scale is a measure of oxygen ion concentration. B) A single unit change on the pH scale is equivalent to a 1% change in hydrogen ion concentration. C) An increase in hydrogen ion concentration means a decrease in pH scale units. D) Basic pH levels are less than 7.
Biology & Microbiology