When the Diaphragm Contracts, It

question 130

Multiple Choice

When the diaphragm contracts, it

• A) opens a hole in its center through which air flows.
• B) aids in expiration.
• C) becomes flatter.
• D) becomes more dome-shaped.

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Definitions:

Adenine

A purine nucleobase used in forming nucleotides of the nucleic acids DNA and RNA.

Nitrogenous Rings

Structures found in organic compounds where nitrogen atoms are part of a cyclic arrangement.

Genetic Changes

Alterations in the DNA sequence of an organism, which can lead to variations in physical traits and behaviors.

Metabolic Enzymes

Proteins that act as catalysts in the biochemical reactions of metabolism, speeding up chemical processes in the cells.