What is gene regulation that occurs in a eukaryotic organism when the DNA is uncoiled and loosened from nucleosomes to bind transcription factors called?

a. epigenetic level of regulation
b. post-transcriptional level of regulation
c. translational level of regulation
d. post-translational level of regulation


a. epigenetic level of regulation

Biology & Microbiology

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Which of the following is the best evidence for the lock and key hypothesis of enzyme action?

A. All isolated enzymes have been identified as proteins. B. Enzymes determine the direction of a reaction. C. Enzymes are found in living organisms and speed up certain reactions. D. Compound similar in structure to the substrate inhibits the reaction

Biology & Microbiology

A boy inherits his X chromosome from

a. his father. b. his mother. c. either his father or his mother. d. both his father and his mother.

Biology & Microbiology

Which of the following is the most prevalent immediate cause of extinction?

A) Environmental change B) Specialization C) Disease D) Predation E) Competition

Biology & Microbiology

During photosynthesis, solar energy is converted to

What will be an ideal response?

Biology & Microbiology