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

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

Quizplus · Accepted Answer

The Answer is C

Halobacterium Has a Photosynthetic Membrane That Appears Purple