You Have Isolated a Bacterium That Grows in a Medium

question 35

Multiple Choice

You have isolated a bacterium that grows in a medium containing an organic substrate and nitrate in the absence of oxygen. The nitrate is reduced to nitrogen gas. This bacterium is

• A) A chemoautotroph.
• B) Using anaerobic respiration.
• C) A photoautotroph.
• D) Gram- negative.
• E) A photoheterotroph.

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Definitions:

Marginal Cost

The expense associated with manufacturing an extra unit of a product or service.

Economic Activity

Actions that involve the production, distribution, and consumption of goods and services at all levels within a society.

Marginal Cost

The expense involved in making an extra unit of a good or service.

Additional Unit

Refers to one more unit of something, often used in the context of production, sales, or inventory.