All of the Following Statements Are Correct with Regard to Chromatin

question 99

Multiple Choice

All of the following statements are correct with regard to chromatin EXCEPT

• A) Nonhistone chromosomal proteins are believed to comprise at least several hundred different protein species.
• B) Histones are proteins which have been conserved during evolution and are rich in basic amino acids.
• C) The nucleosome is a basic structural subunit of chromatin, consisting of a core of 8 histone molecules and about 140base pairs of DNA.
• D) Histones are synthesized throughout the cell cycle and turnover occurs during cell growth.
• E) Most DNA, as it exists in the nucleus, is complexed with proteins.

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Definitions:

Primary Colors

A set of colors from which all other colors can be obtained through mixing; in the context of additive color mixing – red, green, and blue; for subtractive mixing – cyan, magenta, and yellow.

Brightness Contrast

Brightness contrast involves the perception of an object's brightness being affected by the brightness of its surroundings, making it appear lighter or darker.

Lateral Inhibition

A neural mechanism that increases contrast and sharpness in visual and auditory pathways by inhibiting neighboring neurons' activity.

Physiological Mechanism

The processes and functions of an organism or its parts that contribute to the physical and chemical phenomena associated with life.