Why Is Nitrogen Fixation an Essential Process

question 49

Multiple Choice

Why is nitrogen fixation an essential process?

• A) Nitrogen fixation can only be done by certain prokaryotes.
• B) Fixed nitrogen is often the limiting factor in plant growth.
• C) Nitrogen fixation is very expensive in terms of metabolic energy.
• D) Nitrogen fixers are sometimes symbiotic with legumes.

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Definitions:

Head Injury

Physical trauma to the head, which can affect the brain and lead to temporary or permanent damage.

Cerebral Cortex

The outer layer of the brain that is involved in high-level functions such as sensation, voluntary muscle movement, thought, reasoning, and memory.

Thalamus

A large, dual-lobed structure in the brain that acts as a relay station, conveying sensory and motor signals to the cerebral cortex.

Smell

A sense that enables the perception of odors, essential for taste and often involved in memory.