A Mutation Results in an Amino Acid Substitution at a Site

question 29

Multiple Choice

A mutation results in an amino acid substitution at a site distant from the active site of an enzyme.How might this amino acid change alter the active site and substrate specificity of the enzyme?

• A)by changing the optimum temperature for the enzyme
• B)by changing the intracellular location of the enzyme
• C)by changing the binding site for an allosteric regulator
• D)by changing the conformation of the enzyme

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Definitions:

Leukocytes

White blood cells that are part of the immune system, responsible for defending the body against infectious disease and foreign materials.

Erythrocytes

Red blood cells that transport oxygen from the lungs to tissues throughout the body and return carbon dioxide for exhalation.

Formed Elements

Cells and cell fragments in blood, including red blood cells, white blood cells, and platelets.

Plasma

The liquid component of blood that carries cells and proteins throughout the body.