The Four Basic Chemical Elements That Hold the Two Helixes

question 166

Multiple Choice

The four basic chemical elements that hold the two helixes of DNA together are identified by the letters:

• A) A, G, P, D.
• B) A, T, C, G.
• C) G, D, B, T.
• D) G, C, Y, T.

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Definitions:

Acquired Immune System

The part of the immune system that develops antibodies in response to exposure to pathogens, as opposed to innate immunity which individuals are born with.

Hypertension

Condition in which the blood supply through the blood vessels is excessive and can lead to deterioration of the cell tissue and hardening of the arterial walls.

Atherosclerosis

Atherosclerosis is a condition characterized by the hardening and narrowing of arteries due to the build-up of plaque, leading to reduced blood flow.

Angina Pectoris

A medical condition characterized by chest pain or discomfort due to coronary heart disease and reduced blood flow to the heart.