Question

1. if a scientist removes the pair of chlorophyll a molecules from the reaction - center complex, then which of the following consequences would be most likely to occur?

a. the primary electron acceptor would capture boosted electrons from the light - harvesting complex.
b. the transfer of energy from the light - harvesting complex to the reaction - center complex would stop.
c. light would be absorbed twice as fast to make up for the loss of the chlorophyll a pigments.
d. none of the above consequences would occur.

Explanation:

For question 4: A photosystem consists of two main pigment complexes: the light-harvesting (or antenna) complex that captures light energy, and the reaction-center complex that converts that energy into chemical energy via electron transfer.
For question 5: The pair of chlorophyll a molecules in the reaction-center complex is the site where excited electrons are transferred to the primary electron acceptor. Removing these molecules eliminates the source of the boosted electrons, so the primary electron acceptor cannot capture them. Energy transfer to the reaction center would fail, light absorption compensation would not occur, so none of the other options are correct.

Answer:

1. light-harvesting complex; reaction-center complex
2. a. The primary electron acceptor would capture boosted electrons from the light-harvesting complex.