McGraw-Hill Online Learning Center Test

McGraw-Hill Online Learning Center Test


1. Review the image and answer the following questions.

What is a nucleosome?

A. A nucleosome is a unit made up of nucleoplasm and ribosomal subunits.
B. A nucleosome is the portion of DNA preparing for transcription.
C. A nucleosome is a cluster of introns wrapped up as a unit.
D. A nucleosome is a region in which DNA is wrapped tightly around a cluster of histone proteins.


2. What is the apparent purpose of nucleosomes?

A. Nucleosomes prevent mutations from occuring in short lengths of DNA.
B. Nucleosomes are regions of DNA transcription and hold the RNA in position along the DNA strand.
C. Nucleosomes reduce the length of a chromatin fiber.
D. Nucleosomes are unique to humans and their function is unknown.
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