There Are 61 MRNA Codons That Specify an Amino Acid,but

question 63

Multiple Choice

There are 61 mRNA codons that specify an amino acid,but only 45 tRNAs.This is best explained by the fact that

• A)some tRNAs have anticodons that recognize four or more different codons.
• B)the rules for base pairing between the third base of a codon and tRNA are flexible.
• C)many codons are never used,so the tRNAs that recognize them are dispensable.
• D)the DNA codes for all 61 tRNAs,but some are then destroyed.

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Definitions:

Diminishing Rate

A principle stating that if one factor of production is increased while others are held constant, the incremental gains in output will eventually decrease.

Long Run

Refers to a period in economics where all factors of production can be adjusted, and all costs are variable, allowing for complete industry adjustment.

Renovate

The process of restoring or improving a building, room, or structure to make it more attractive, functional, or to bring it up to current standards.

Marginal Product Curve

A graphical representation showing how the addition of a single unit of resource alters the total output of a good or service.