10.2

Question 1

A photo system consists of 2 linked components

Answer 1

Antenna complex and a reaction center

Question 2

Antenna complex

Answer 2

Hundreds of accessory pigment molecules gather photons and feed the captured light energy to the reaction center

Question 3

Reaction center

Answer 3

One or more chlorophyll A molecules passes excited electrons out of the photosystem to drive ATP/ organic molecule synthesis

Question 4

Chloroplasts have 2 linked photosystems

Answer 4

-oxygen photosynthesis (oxygen generating)
-photophosphorylation
—production of NADPH from NADP and ATP from ADP

Question 5

ATP is produced via chemiosmosis

Answer 5

ATP synthase uses proton gradient to provide energy for ATP synthesis

Question 6

Noncyclic photophospirylation

Answer 6

Generates NADPH and ATP but building organic molecules requires more energy

Question 7

Cyclic photophosphorylation

Answer 7

Allows cells to produce additional ATP by “short-circuiting” photosystek 1 to create larger proton gradient
-electrons are cycled back to b6 f complex rather than transfers to NADP+
-more protons can be pumped to the thylakoid space