Which Substance in the Reaction Below Either Appears or Disappears

question 43

Multiple Choice

Which substance in the reaction below either appears or disappears the fastest? 4NH₃ + 7O₂ → 4NO₂ + 6H₂O

• A) NH₃
• B) H₂O
• C) O₂
• D) NO₂
• E) The rates of appearance/disappearance are the same for all of these.

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Definitions:

Tumor-suppressor Genes

Genes that protect a cell from one step on the path to cancer; when these genes are mutated or inactivated, the risk of cancer development increases.

Defective Alleles

Variants of genes that do not function correctly, often leading to disorders or reduced fitness in organisms.

Somatic Mutations

Genetic alterations acquired by a cell that can be passed to the progeny of the mutated cell but not to an individual's offspring.

HbS Allele

A variant of the hemoglobin gene responsible for sickle-cell disease, offering protection against malaria where prevalent.