A Mutation in Yeast Makes It Unable to Convert Pyruvate

question 61

Multiple Choice

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

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

Comprehend the changes in the brain structure and function during adolescence.

Understand the process and significance of synaptic pruning.

Describe the structure and function of DNA.

Understand the development and changes in the frontal lobes during adolescence.

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Definitions:

Distraction-Conflict Theory

A theory suggesting that the presence of others can increase arousal and facilitate performance on familiar tasks but may hinder performance on complex tasks due to attentional conflict.

Evaluation Apprehension Model

A theory suggesting that anxiety about being evaluated by others can lead to increased or decreased performance depending on the individual and the context.

Social Facilitation

The tendency for individuals to perform better on simple or well-learned tasks in the presence of others than when alone.

Discretionary Task

refers to a job or an assignment that requires personal judgment or choice in its execution, often without strict guidelines or procedures.