A Nutrient Is a Substance That an Organism Uses for

question 16

Multiple Choice

A nutrient is a substance that an organism uses for

• A) growth.
• B) metabolism.
• C) maintenance.
• D) repair of tissues.
• E) All of the answer choices are correct.

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Definitions:

Glycogen Stores

The stored form of glucose in the body, primarily found in the liver and muscle tissues, serving as a form of energy reserve.

Terminal Cisternae

Enlarged areas of the sarcoplasmic reticulum around the muscular T-tubules that store calcium ions for muscle contraction.

T Tubule

T Tubules, or transverse tubules, are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells, facilitating the rapid transmission of signals.

Triad

Two terminal cisternae and a T tubule between them.