Which Statement About the Elongation Phase of Protein Synthesis Is

question 49

Multiple Choice

Which statement about the elongation phase of protein synthesis is TRUE?

• A) At least five high-energy phosphoryl groups are expended for each peptide bond formed.
• B) During elongation, incoming aminoacylated tRNAs are first bound in the P site.
• C) Elongation factor EF-Tu facilitates translocation.
• D) Peptidyl transferase catalyzes the attack of the carboxyl group of the incoming amino acid on an ester linkage in the nascent polypeptide.
• E) Peptidyl transferase is a ribozyme.

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Definitions:

Marginal Cost

is the extra cost incurred by producing one more unit of a product or service.

Fixed Cost

Costs that do not change with the level of production or output, such as rent, salaries, and loan payments.

Variable Costs

Costs that change in proportion to the level of output or activity in a business.

Snow-clearing

The process of removing snow from surfaces like roads and walkways to ensure safe passage and transportation.