Suppose That You Performed a Version of the Hershey and Chase

question 39

Multiple Choice

Suppose that you performed a version of the Hershey and Chase experiment, this time using ³²P-labelled viruses that insert their DNA into the DNA of the cells that they infect. Also suppose that the viral DNA is then treated as part of the cell's own DNA, and is replicated during DNA replication and passed on to daughter cells when the cell divides. You infect a population of cells with the ³²P-labelled viruses, and then let the infected cells go through two generations of cell divisions. In how many cells should you find ³²P-labelled DNA?

• A)in none of them
• B)in about one-quarter of them
• C)in about one-half of them
• D)in about three-quarters of them

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Definitions:

Return on Assets

A financial ratio that indicates how profitable a company is relative to its total assets.

Internal Growth Rate

The maximum rate at which a company can expand using only internal financing without resorting to borrowing or selling equity.

Dividend Payout Ratio

The fraction of earnings a company pays out to its shareholders as dividends, represented as a percentage of its net income.

Financial Statement

Formal records of the financial activities and position of a business, person, or other entity, typically including balance sheet, income statement, and cash flow statement.