Phytoplankton Is Comprised of Photosynthetic Protists and Bacteria

question 10

Multiple Choice

Phytoplankton is comprised of photosynthetic protists and bacteria. For the most part, humans do not consume phytoplankton. Why, then, are they important to humans?

• A) They cause serious illness in humans.
• B) They are not important to humans.
• C) They are food for many marine organisms that humans eat.
• D) They release a lot of carbon dioxide into the atmosphere.

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Definitions:

Unpredictable Temperament

An individual's behavioral style that is irregular or difficult to forecast, affecting how they react in various situations.

Irritable

A state of being easily annoyed or angered, showing a tendency towards irritation.

Physiologically Aroused

The condition of having one's body in a heightened state of alertness, often in response to a stimulus.

Epigenetic Molecules

Chemical compounds that modify the genome without changing the DNA sequence, affecting how genes are expressed.