Use the Following Information to Answer the Question

question 35

Multiple Choice

Use the following information to answer the question.
Poliovirus is an RNA virus of the picornavirus group, which uses its RNA as mRNA. At its 5′ end, the RNA genome has a viral protein (VPg) instead of a 5′ cap. This is followed by a non-translated leader sequence, and then a single long protein-coding region (~7,000 nucleotides) , followed by a poly-A tail. Observations were made that used radioactive amino acids similar in structure to those that are found in viruses and other organisms. Short-period use of the radioactive amino acids result in labeling of only very long proteins, while longer periods of labeling result in several different short polypeptides.
What conclusion is most consistent with the results of the radioactive labeling experiment?

• A) Host cell ribosomes only translate the viral code into short polypeptides.
• B) The RNA is only translated into a single long polypeptide, which is then cleaved into shorter ones.
• C) The RNA is translated into short polypeptides, which are subsequently assembled into large ones.
• D) The large radioactive polypeptides are coded by the host, whereas the short ones are coded for by the virus.

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Definitions:

Opportunity Costs

The cost of choosing one alternative over others, representing the benefits an individual, investor, or business misses out on when choosing one option over another.

Resource Shiftability

The flexibility with which resources can be shifted from producing one product to another in response to changing market demands.

Production Possibilities Curve

A graphical representation showing the maximum combination of goods or services that can be produced in a given time period with available resources.

Consumer Goods

Products and commodities bought and used by individuals and households for personal consumption.