Which of the Following Statements About E

question 20

Multiple Choice

Which of the following statements about E. coli DNA polymerase I is FALSE?

• A) It can copy a circular DNA template but cannot join the ends.
• B) It can extend a gapped duplex from a 3'OH group and displace a preexisting 5' end.
• C) The 3' exonuclease site is some distance from the polymerase active site.
• D) It has 3' exonuclease activity that resides in a small N-terminal fragment that can be cleaved off by limited proteolysis.
• E) It has 5' exonuclease activity that resides in a small N-terminal fragment that can be cleaved off by limited proteolysis.

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Definitions:

Divisional Operating Income

The earnings generated from the operations of a specific division within a company, excluding costs and income from other divisions or corporate activities.

Investment Turnover

A ratio that measures the efficiency of a company in using its investments to generate sales or revenue.

Operating Income

The income generated from the primary activities of a company, before subtracting any interest and tax expenses.

Profit Margin

A financial metric indicating the percentage of revenue that exceeds the cost of goods sold, representing the proportion of sales that turns into profit.