You Are Studying Mutant Algal Cells That Lack Carotenoids

question 91

Multiple Choice

You are studying mutant algal cells that lack carotenoids. You raise them in an aerobic environment. They do not survive. Why?

• A)They cannot absorb any light.
• B)They reflect all colors of light.
• C)They dissipate aerobic environments.
• D)They transfer excess energy to O₂ making ultrareactive singlet oxygen that can destroy biological molecules and cause cell death.
• E)The lack of carotenoids causes the chloroplast membranes to disintegrate.

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Definitions:

Exemplar Theory

A psychological theory suggesting that people make judgments about objects or concepts based on comparisons with instances of those categories that they have encountered in the past.

Prototype Theory

is a model of categorization in cognitive science, where members of a category are assessed by their resemblance to a typical member or prototype of that category.

Schema Theory

A theory of attention that claims unattended information is never perceived.

Knowledge-based Theory

A theory suggesting that organizations rely on their knowledge and expertise to create competitive advantage and innovate.