Biologists Are Fairly Certain That Oxygen Was Built Up in the Atmosphere

question 2

Multiple Choice

Biologists are fairly certain that oxygen was built up in the atmosphere by the development of photosynthesis. The production of oxygen and, therefore, the beginning of extensive aerobic life was made possible by the evolution of

• A) fermentation.
• B) photosystem I.
• C) photosystem II.
• D) glycolysis.
• E) the nucleus.

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Definitions:

Catatonic

A behavioral syndrome marked by an inability to move normally, which can include motor immobility and excessive motor activity.

Psychotic

Relating to psychosis, characterized by a disconnect from reality, which may include delusions and hallucinations.

Melancholic

Describes a state characterized by deep sadness or depression, often without a clear cause, reflecting one of the four classical temperaments.

Atypical

Deviating from what is usual or normal; not typical.