The Reverse Transcriptase Enzyme of Retroviruses Includes Between 1 and 10

question 15

Multiple Choice

The reverse transcriptase enzyme of retroviruses includes between 1 and 10 mistakes when it copies the viral genome into DNA.Which of the following explains why?

• A) It lacks the 3'-to-5' exonuclease activity found in the cellular DNA polymerase.
• B) It lacks the 5'-to-3' exonuclease activity found in the cellular DNA polymerase.
• C) It doesn't bind to the cellular proteins involved in proofreading.
• D) The virus doesn't produce the proteins involved in proofreading.
• E) The production of RNA is inherently more mistake prone than the production of DNA.

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Definitions:

Equivalent Unit

A concept used in process costing that represents the amount of work done on incomplete units, expressed in terms of fully completed units.

Weighted-Average Method

An inventory costing method that calculates the cost of ending inventory and the cost of goods sold based on the average cost of all inventory units.

Process Costing System

An accounting method used to assign costs to units of production in industries where the production process is continuous.

Ending Work In Process

The balance of unfinished goods at the end of an accounting period, which includes material, labor, and overhead costs incurred.