A Scientist Has Been Growing a Bacterial Strain for Some

question 50

Multiple Choice

A scientist has been growing a bacterial strain for some time in culture media containing very few nutrients.The cells are growing slowly,so she enriches the media with amino acids and carbohydrates.To her dismay,instead of growing faster and to higher densities,the bacteria begin to die.What has caused this strange result?

• A)a prophage switched from the lysogenic cycle to the lytic cyle
• B)a prophage switched from the lytic cycle to the lysogenic cycle
• C)the bacteria are infected with a temperate phage
• D)the bacteria are infected with a virulent phage that has switched from the lysogenic cycle to the lytic cycle
• E)the bacteria are infected with a temperate phage that has switched from the lysogenic cycle to the lytic cycle

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Definitions:

Resource Conservation

The practice of managing the use of natural resources wisely to ensure their availability and quality for future generations.

Recovery Act

Refers to legislative acts aimed at promoting economic recovery, such as the American Recovery and Reinvestment Act of 2009 designed to stimulate the U.S. economy during a recession.

Prosecute Violators

To legally pursue and bring formal charges against individuals or entities that have broken the law.

Generators

Machines that convert mechanical energy into electrical energy for use in external circuits.