What Molecule Contributes to the Red Color of Slow-Twitch Muscle

question 40

Multiple Choice

What molecule contributes to the red color of slow-twitch muscle fibers?

• A)myoglobin
• B)ATP
• C)glycogen
• D)lactic acid

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Definitions:

DNA Methylation

A process in which gene inactivation is perpetuated by enzymes that add methyl groups to DNA.

Heterochromatin

Highly coiled and compacted chromatin in an inactive state. Compare with euchromatin.

Transcriptionally Inactive

Referring to genes or DNA regions that are not being transcribed into RNA, often due to regulatory mechanisms.

Chromatin

The complex of DNA and proteins, primarily histones, that forms the chromosomes within the nucleus of eukaryotic cells.