It Is Possible to Convert the Cys That Is a Part

question 98

Multiple Choice

It is possible to convert the Cys that is a part of Cys-tRNA^Cys to Ala by a catalytic reduction. If the resulting Ala-tRNA^Cys were added to a mixture of (1) ribosomes, (2) all the other tRNAs and amino acids, (3) all of the cofactors and enzymes needed to make protein in vitro, and (4) mRNA for hemoglobin, where in the newly synthesized hemoglobin would the Ala from Ala-tRNA^Cys be incorporated?

• A) Nowhere; this is the equivalent of a nonsense mutation.
• B) Wherever Ala normally occurs
• C) Wherever Cys normally occurs
• D) Wherever either Ala or Cys normally occurs
• E) Wherever the dipeptide Ala-Cys normally occurs

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Definitions:

Genetic Variations

Differences in DNA sequences among individuals within a population, which contribute to the biological diversity and influence characteristics such as appearance, behavior, and susceptibility to diseases.

Adaptive Capacities

The ability of organisms or systems to adjust to changes in their environment and modify themselves to fit or survive those changes.

Individualism

An ideology focusing on the elevation of personal liberties above the influence or control of governmental or collective frameworks.

Natural Mimicry

The adaptation process where an organism evolves to resemble another organism or object in its environment for survival benefits.