You Have Isolated a Bacterium That Grows in a Medium

question 21

Multiple Choice

You have isolated a bacterium that grows in a medium containing only inorganic nutrients. Ammonia is oxidized to a nitrate ion. This bacterium is

• A) gram- negative.
• B) a photoheterotroph.
• C) a photoautotroph
• D) using anaerobic respiration.
• E) a chemoautotroph.

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Definitions:

Home HVAC System

A heating, ventilation, and air conditioning system designed to maintain indoor air quality and thermal comfort in residential buildings.

Hypothalamus

Part of the vertebrate brain; in mammals it regulates the pituitary gland, the autonomic system, emotional responses, body temperature, water balance, and appetite; located below the thalamus.

Sensory Nerve Cells

Nerve cells that are responsible for converting external stimuli from the organism's environment into internal electrical impulses.

Sweat Glands

Specialized glands in the skin that produce sweat, a fluid containing water and salts, which helps regulate body temperature.