light Reaction and Calvin cycle reviewer

Light Reaction and calvin cycle review

1. Where is the stroma and thylakoid space relative to
the thylakoid membrane?
•The thylakoid space is inside the thylakoid
membrane and the stroma is outside

2. Where is chlorophyll located?
•On the thylakoid membrane

3. What are the three products of
photolysis?
•Oxygen to the atmosphere
•H+ ions inside the thylakoid membrane
•Electrons to chlorophyll

4. What frequencies of light are absorbed and reflected
by chlorophyll
•Red and blue are absorbed
•Green is reflected

5. What happens to chlorophyll
when it absorbs light energy?
•Loses electrons to the electron transport
chain

6. Describe what is meant by the
electron transport chain.
•Series of protein molecules embedded on
the membrane where each has a
successively higher attraction for electrons
than the previous one

7. What happens with the energy
released at each redox reaction?
•Used to actively transport H+ ions into the
thylakoid space

8. Is the formation of ATP energy
requiring or energy releasing?
•Energy requiring

9. Are H+ freely permeable to the thylakoid membrane? How
do H+ ions diffusion out of the thylakoid space into the
stroma?
•No
•Through ATP Synthase transport protein

10. Is the flow of H+ ions through ATP Synthase
energy requiring or energy releasing?
•Energy releasing
•This energy is used to form ATP

11. What serves as the final electron acceptor at
the end of the electron transport chain?
•NADP+

12. What three things are needed for the light reactions? What
three things are produced in the light reactions?
•Needed--Light, water, chlorophyll
•Produced--oxygen (to atmosphere), ATP,
and NADPH (both to light independent
Calvin Cycle)

13. The synthesis part of
photosynthesis is known as
•Calvin Cycle
•(Light independent reactions/ Dark
Reactions)

14. Name the step of the calvin cycle when carbon from outside
living things is incorporated into living things.
•Carbon Fixation

15. Name the enzyme that performs
carbon fixation
•Rubisco

16. Name two products of the light reactions that are needed for
the Calvin Cycle
•ATP and NADPH

17. Name the molecule that cycles out of the
calvin cycle to form biomolecules.
•PGAL (G3P)