You Mix Two Bacterial Stains in a Tube of Glucose-Salts

question 11

Multiple Choice

You mix two bacterial stains in a tube of glucose-salts agar. One strain is His−, Val−, while the other strain is Trp−, Leu−. You previously showed that neither strain grows on glucose-salts agar. After incubating the tube, you plate a sample onto a new glucose-salts agar plate. Several colonies grow. What do you know is TRUE about these colonies?

• A) The bacteria in the colonies are His−, Val−, Trp+, Leu+.
• B) The bacteria in the colonies are His−, Val+, Trp+, Leu+.
• C) The bacteria in the colonies are His−, Val−, Trp−, Leu−.
• D) The bacteria in the colonies are His+, Val+, Trp+, Leu+.
• E) The bacteria in the colonies are His+, Val+, Trp+, Leu+, PenR.

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Definitions:

Naturalism

A philosophical viewpoint that everything arises from natural properties and causes, and supernatural explanations are excluded or discounted.

Individualism Versus Collectivism

A cultural dimension that describes the degree to which a society emphasizes individual achievement and autonomy (individualism) or prioritizes the group and community over the individual (collectivism).

Personal Freedoms

The rights and liberties that allow individuals to express themselves, make personal choices, and live their lives without undue interference from others or the government.

Group Moral Responsibility

The concept that a collective or group can be held ethically responsible for actions taken as a whole.