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Biochemistry

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Photosynthesis: General Properties

BIOCHM-AYA667

The evolution of complex eukaryotic life forms was driven largely by the increase in atmospheric oxygen brought about by oxygenic photosynthesis.

Identify ALL of the following statements which are UNTRUE regarding photosynthesis.

A

Chloroplasts likely evolved from photosynthetic cyanobacteria.

B

One characteristic of chloroplasts and their endosymbiotic origin is the presence of at least 2 surrounding membranes (envelopes or phospholipid bilayers).

C

Oxygen is required for all photosynthetic organisms.

D

Oxygen serves as the final electron acceptor in the light reactions of photosynthesis.

E

Photosynthesis will not take place in the absence of photosystem I or photosystem II.

F

The dark reactions of photosynthesis require light.