Concerning the Nitrogen Cycle,which of These Is NOT True

question 23

Multiple Choice

Concerning the nitrogen cycle,which of these is NOT true?

• A)It requires a number of different types of bacteria.
• B)Plants can take in and use nitrogen from the air by using their leaves.
• C)Ammonium in the soil is converted to nitrite by nitrite-producing bacteria and then nitrite is converted to nitrate by nitrate-producing bacteria.
• D)Eventually,organic nitrogen becomes inorganic nitrogen again.
• E)Human activities increase the nitrogen fixation rate.

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Definitions:

Suprachiasmatic Nucleus

Main biological clock; located in the hypothalamus. Important in setting circadian rhythms.

Pineal Gland

Endocrine gland located in the brain.

Cerebral Cortex

The outer layer of neural tissue of the cerebrum of the brain, playing a key role in memory, attention, perception, cognition, awareness, thought, language, and consciousness.

Limbic System

A complex system of nerves and networks in the brain, involved with instinct and mood. It controls the basic emotions and drives.