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.