Which of the Following Correctly Describes the Structure of Normal $\alpha$

question 9

Multiple Choice

Which of the following correctly describes the structure of normal hemoglobin A (Hb A) ?

• A) Four identical polypeptide chains, each containing two heme groups
• B) Two \(\alpha\) and two \(\beta\) polypeptide chains, each containing one heme group
• C) Conjugated protein with 141 amino acids, containing two atoms of iron
• D) Two \(\delta\) and two \(\gamma\) polypeptide chains, each containing a single heme group

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Definitions:

Energy

The capacity to do work or produce change, existing in various forms such as kinetic, potential, thermal, electrical, chemical, and nuclear.

Triglycerides

A type of fat found in the blood, made up of a molecule of glycerol combined with three fatty acids, used by the body for energy.

Polysaccharide

Carbohydrate that consists of hundreds or thousands of monosaccharide monomers.

Molecule

The smallest particle of a chemical element or compound that can exist independently while retaining the characteristics of the substance.