Refer to the Figure

question 67

Multiple Choice

Refer to the figure. Based on the diagram, the process most responsible for returning nitrogen to the atmosphere as a gas is

• A) bacterial nitrogen fixation.
• B) nitrification.
• C) nitrate reduction.
• D) denitrification.
• E) industrial nitrogen fixation.

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Definitions:

X Chromosomes

The X chromosome is one of the two sex chromosomes in mammals, including humans, and plays a crucial role in sex determination and genetic inheritance.

Zygote

The 2n cell that results from the union of n gametes in sexual reproduction. Species that are not polyploid have haploid gametes and diploid zygotes.

Embryonic Cells

Cells derived from an embryo that have the potential to develop into any type of cell in the organism.

Crossing-Over

A process during meiosis where homologous chromosomes exchange genetic material, leading to new genetic combinations in offspring.