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Biology, Science
9th -
12thgrade
Bio A 4.1.6 qz practice - processes of photosynthesis
25 questions
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- 1. Multiple Choice
Which protein complex absorbs the energy that is used to produce NADPH?
Photosystem 1
Photosystem 2
The hydrogen ion pump
ATP synthase
- 2. Multiple Choice
After light hits photosystem I, the energy from the light is used to produce what molecule?
Glucose
ATP
ADP
NADPH
- 3. Multiple Choice
Electrons are excited in photosystem I. What do these electrons combine with in order to produce an energy-carrying molecule?
Glucose
ADP
NADP+
ATP
- 4. Multiple Choice
After sunlight hits photosystem II, which is the best description of what happens?
NADPH is turned into NADPH+
Glucose is formed from carbon dioxide molecules.
Electrons turn into light energy and move towards the sun.
Solar energy changes ADP into ATP.
- 5. Multiple Choice
Which is produced using the energy from photons hitting photosystem II?
ATP
ADP
NADP+
NADPH
- 6. Multiple Choice
Which is a reactant for the reaction that is powered by sun hitting photosystem II?
NADPH
ATP
ADP
NADP+
- 7. Multiple Choice
Which process of photosynthesis will be the least affected by shorter periods of daylight?
The Calvin Cycle
The reaction at photosystem I
The reaction at photosystem II
ATP formation
- 8. Multiple Choice
Which process of photosynthesis can occur at night?
The reaction at photosystem II
The reaction at photosystem I
NADPH formation
The Calvin Cycle
- 9. Multiple Choice
How many carbon dioxide molecules are needed to make a single glucose molecule?
6
18
3
24
- 10. Multiple Choice
How many glucose molecules can be formed by 6 molecules of carbon dioxide?
1
12
18
6
- 11. Multiple Choice
When a plant forms glucose molecules, where do the carbon atoms come from?
Carbon dioxide
ADP
NADPH
Sucrose
- 12. Multiple Choice
Which protein complex allows hydrogen ions to rush out of the thylakoid, providing energy that can be used to make a molecule?
photosystem II
the hydrogen pump
ATP synthase
photosystem I
- 13. Multiple Choice
What is the role of ATP synthase in photosynthesis?
It produces ADP molecules from NADP molecules
It gives energy to electrons in the thylakoid
it produces glucose from carbon dioxide
it allows hydrogen ions out of the thylakoid
- 14. Multiple Choice
What is the role of ATP synthase in photosynthesis?
It produces ATP by adding a phosphate group to NADPH
it allows photons to be converted directly into glucose molecules
it absorbs photons from the sun and give energy to electrons
it uses the potential energy of hydrogen ions flowing to make ATP
- 15. Multiple Choice
Which part of a chloroplast does the Calvin cycle occur in?
the hydrogen ion pump
the bi-layered membrane
the stroma
ATP syntase
- 16. Multiple Choice
What part of the chloroplast do the dark reactions occur in?
ATP synthase
Photosystem I
The hydrogen ion pump
the stroma
- 17. Multiple Choice
What will most likely happen if the hydrogen pump protein in photosystem II doesn't take in enough H+ ions into the thylakoid?
there will be a decrease in light absorption by chlorophyll
there will be an increase in glucose production
there will be a decrease in the formation of ATP
there will be an increase in CO2 absorption by the chloroplast.
- 18. Multiple Choice
What will most likely happen if the hydrogen pump protein in photosystem I doesn't take in enough H+ ions into the thylakoid?
there will be a decrease in the formation of NADPH
there will be an increase in carbon dioxide absorption by the chloroplast
there will be a decrease in the production of ADP
there will be an increase in glucose production
- 19. Multiple Choice
What molecule is produced by adding two electrons and one proton to NADP+?
NADPH
NADH
NAD+
ATP
- 20. Multiple Choice
After electron leave photosystem II, they go into an electron transport chain of 3 protein complexes. Where do they go after that electron transport chain?
photosystem III
photosytem I
the Calvin cycle
photosystem II
- 21. Multiple Choice
How do electrons gain energy in photosystem I?
they absorb photons
they take energy from ATP molecules
they use energy in the form of glucose
they use energy from an ion pump
- 22. Multiple Choice
A toxic substance is absorbed by a green plant and is inhibiting the Calvin cycle. How will this most likely affect the light reactions?
the light reactions will continue to produce oxygen.
the light reactions will produce more carbon dioxide
the light reactions will slow down
the light reactions will start to produce glucose
- 23. Multiple Choice
A toxic substance is absorbed by a green plant and is completely blocking the production of ATP. How will this most likely affect the dark reactions?
the dark reactions will stop happening.
the dark reactions will continue to produce oxygen
the dark reactions will produce more carbon dioxide
the dark reactions will produce more NADPH
- 24. Multiple Choice
Which substance is a green pigment in chloroplasts that absorbs energy for photosystems?
chlorophyll
NADPH
ATP
Thylakoids
- 25. Multiple Choice
Which substance contains thylakoids?
Chloroplasts
ATP
The stroma
NADPH
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