Histones Are

question 15

Multiple Choice

Histones are

• A) Proteins that bind DNA and make it inaccessible to transcription
• B) Proteins that prevent DNA from being translated
• C) Enzymes that mark cells for histology
• D) Enzymes that ub iquinylate DNA
• E) Enzymes that methylate DNA

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Definitions:

Phosphate Bonds

High-energy chemical bonds found in many biological molecules such as ATP, which release energy when broken.

Chemical Work

The process of using and converting chemical energy to perform tasks within a cell, such as synthesizing biomolecules.

Mechanical Work

The transfer of energy that occurs when a force is applied to an object causing it to move.

Transport Work

The energy required to move substances across cell membranes against a concentration gradient, a fundamental process in cells to maintain homeostasis.