A Mutation in Yeast Makes It Unable to Convert Pyruvate

question 7

Multiple Choice

A mutation in yeast makes it unable to convert pyruvate to ethanol. How will this mutation affect these yeast cells? The mutant yeast cells will ________.

• A) be unable to grow anaerobically
• B) grow anaerobically only when given glucose
• C) be unable to metabolize glucose
• D) die because they cannot regenerate NAD+ from NAD
• E) metabolize only fatty acids

Acknowledge the interaction between nature and nurture in shaping personality and behavior.

Grasp the significance of genetic predispositions and their survival advantages from an evolutionary perspective.

Recognize the evolutionary explanations for fear responses and attraction, including sexual behavior and mate selection.

Differentiate between random genetic mutations and natural selection in evolutionary terms.

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Definitions:

Sex Glands

Organs that produce sex hormones and gametes, such as ovaries in females and testes in males.

Cortisol

A steroid hormone released in response to stress and low blood-glucose concentration, involved in metabolism and immune response.

General Adaptation Syndrome

A three-phase response model to stress that includes alarm, resistance, and exhaustion stages, proposed by Hans Selye.

Exhaustion

A state of extreme physical or mental fatigue, often resulting from prolonged stress or overwork.