The First Stage of Catabolism Is

question 3

Multiple Choice

The first stage of catabolism is

• A)digestion of large molecules.
• B)the citric acid cycle.
• C)production of acetyl CoA.
• D)production of pyruvate.
• E)buildup of macromolecules from monomers.

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Definitions:

Lateral Transport

The movement of substances parallel to the surface of a cell membrane, often involved in various cellular processes.

Lenticels

Porous swellings of cork cells in the stems of woody plants; facilitate the exchange of gases.

Pith Rays

Tissue in plants that extends radially across the stem or trunk, involved in the storage and transport of nutrients horizontally within the structure.

Heartwood

The dense, inner part of a tree trunk, yielding the hardest wood.