Zooxanthellae Benefit Their Coral Hosts

question 14

Multiple Choice

Zooxanthellae benefit their coral hosts

• A) Principally by removing nitrogenous wastes
• B) Mainly by supplying oxygen in an oxygen-poor environment
• C) By protecting them from uv light
• D) By transferring carbohydrates to their hosts, which is used for food

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Definitions:

L-Serine

An α-amino acid important in biosynthesis, which serves as a building block for proteins.

Predominant Form

The most abundant or common form of a substance under specified conditions.

L-Phenylalanine

An essential amino acid with the formula C9H11NO2, used in the biosynthesis of proteins.

Biological pH

The pH range maintained in biological systems and fluids critical for the proper functioning of cells and biochemical processes.