In His Transformation Experiments, What Did Griffith Observe

question 26

Multiple Choice

In his transformation experiments, what did Griffith observe?

• A) Mutant mice were resistant to bacterial infections.
• B) Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form.
• C) Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic.
• D) Infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains.
• E) Mice infected with a pathogenic strain of bacteria can spread the infection to other mice.

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Definitions:

Preferred Stock

A class of stock that typically has a priority claim on dividends and assets in the event of liquidation over common stock.

Yield

The income return on an investment, such as the interest or dividends received, expressed as an annual percentage of the investment’s cost.

Cost of Debt

The effective rate that a company pays on its current debt, including loans and bonds, which can be measured before or after taxes.

Annual Coupon

The annual interest payment made to bondholders, expressed as a percentage of the bond's face value.