McGraw-Hill Online Learning Center Test

1. Review the image and answer the following questions.

What is true about the photosystem shown in this diagram?

A. Light has to be of the proper wavelength to be absorbed by a pigment molecule.
B. About any wavelength of light will be absorbed by the numerous accessory pigments found in any photosystem.
C. Photons are passed around from one chlorophyll molecule to another.
D. All of these are correct.

2. What is the function of the reaction center of the photosystem?

A. It regulates the rate of the light-dependent reactions, in much the same manner that the nucleus controls a cell's activities.
B. The reaction center absorbs the light energy and distributes it evenly throughout the photosystem.
C. The reaction center channels the energy out of the photosystem to the light-independent reactions.
D. The reaction center is capable of all of these.

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