Scientists Have Found That Polypeptides That Are Normally Synthesized in the Endoplasmic

question 19

Multiple Choice

Scientists have found that polypeptides that are normally synthesized in the endoplasmic reticulum are about 20 amino acids longer when they are synthesized by ribosomes not attached to the endoplasmic reticulum.What is/are possible explanations for the greater length of these polypeptides?

• A)The ribosomes that function as free ribosomes function differently than the ribosomes that are attached to the endoplasmic reticulum.
• B)The 20 amino acids serve as a signal sequence that directs the forming polypeptide to the endoplasmic reticulum,where they are cleaved off during processing.
• C)The 20-amino-acid sequence helps the endoplasmic reticulum package these proteins for shipping to the Golgi.
• D)The protein has a different function in the cytosol than in the endoplasmic reticulum.

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Definitions:

Dividend Payments

Distribution of a portion of a company's earnings to its shareholders, usually in cash or additional stock.

Dividend Yield Ratio

A financial ratio that shows how much a company pays out in dividends each year relative to its stock price.

Earnings Per Share

A company's profit divided by its number of common shares outstanding, indicating how much money it makes per share.

Dividend Yield

A financial ratio that shows how much a company pays out in dividends each year relative to its stock price, often expressed as a percentage.