Use the Following Figure to Answer the Question

question 18

Multiple Choice

Use the following figure to answer the question.

Halobacterium has a photosynthetic membrane that appears purple. Its photosynthetic action spectrum is the inverse of the action spectrum for green plants (see figure) . That is, the Halobacterium action spectrum has a peak where the green plant action spectrum has a trough. What wavelengths of light do the Halobacterium photosynthetic pigments absorb?

• A) red and yellow
• B) violet and blue
• C) green and yellow
• D) blue and red

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Definitions:

Aristotle

An ancient Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great, whose works were foundational to Western philosophy.

Human Nature

The inherent characteristics, including ways of thinking, feeling, and acting, that all human beings naturally have.

Moral Arguments

Reasoning that is based on ethical considerations, often discussing what is right and wrong, good and bad.

Descriptive Premises

Statements in an argument that provide factual information or describe the way things are, without making an argument for how things ought to be.