The topoisomerase ________ introduces positive supercoils in DNA, which stabilizes DNA and prevents the DNA helix from denaturing at high temperatures

A) reverse ligase
B) ligase
C) DNA gyrase
D) reverse DNA gyrase


Answer: D

Biology & Microbiology

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_________________ helps to maintain the viscosity of the plasma membrane.

Fill in the blank(s) with the appropriate word(s).

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Which neurons integrate information coming into and out of the central nervous system?

a. afferent neurons b. motor neurons c. interneurons d. efferent neurons e. sensory neurons

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NADH and FADH2 deliver energy to what stage of cellular respiration?

a) electron transport chain b) acetyl-CoA formation c) glycolysis d) citric acid cycle

Biology & Microbiology

Which of the following processes is not an agent of microevolution?

A) polygenic inheritance B) natural selection C) gene flow D) mutation E) genetic drift

Biology & Microbiology