Which Statement About the Structure or Composition of DNA Is

question 1

Multiple Choice

Which statement about the structure or composition of DNA is FALSE?

• A)DNA is a double helix.
• B)Complementary base-pairing occurs between pyrimidine and purine bases.
• C)The amount of thymine closely approximates that of guanine within a particular organism.
• D)Each nucleotide within a DNA is separated by about 0.34 angstroms.
• E)Adenine pairs with thymine and guanine with cytosinE.

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Definitions:

Innervated

Supplied with nerves; refers to organs or tissues that have nerve fibers connected to them.

Phrenic Nerve

A nerve that originates in the neck and passes down between the lung and heart to reach the diaphragm, crucial for breathing as it controls the diaphragm’s movements.

Thoracic Cavity

The area of the body located between the neck and the abdomen, enclosed by the ribs, sternum, and thoracic vertebrae, containing the lungs and heart.

Diaphragm

A major muscle involved in the breathing process, separating the thoracic cavity from the abdominal cavity.