Some Muscle Cells Are Able to Carry Out the Reaction

question 170

Multiple Choice

Some muscle cells are able to carry out the reaction shown in the figure below when oxygen is unavailable. The purpose of this reaction is that, when O₂ is not available:

• A)muscle cells use pyruvate as their main energy source.
• B)muscle cells use lactate as their principal energy source.
• C)NAD⁺ must be regenerated for glycolysis to proceed.

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Definitions:

Lateral Roots

Roots that branch off from the main root to increase the plant's ability to absorb water and nutrients from the soil.

Cortex

In biology, the outer layer of an organ or structure, such as the cerebral cortex of the brain or the cortex of a plant root or stem.

Symplast

The network of cytoplasm of multiple plant cells connected by plasmodesmata, facilitating intercellular communication.

Cytoplasm

The jelly-like substance within a cell that contains the cytosol, organelles, and inclusions, exclusive of the nucleus.