Photosynthesis 1
General
General
8. In eukaryotic cells, photosynthesis occurs in organelles called ___.
Chloroplasts
11. What is the range of wavelengths of light that are visible to humans?
visible light
5. Name the molecule that is taken from the air and provides the carbon for the production of carbohydrates during the calvin cycle.
Carbon Dioxide (CO2)
9. True or False: The Calvin cycle can occur in plant that is in the dark room so long as the materials (carbon dioxide, ATP, NADPH) are present.
True
15. High energy electrons in Photosystem I are used to manufacture molecules of?
NADPH
1. What is the primary function of Photosynthesis?
to create sugar
6. Which has the most energy:
one photon of green light
one photon of blue light
one photon of red light
One photon of blue light
2a. Name a gas released as by-product of the light dependent reactions of photosynthesis?
Oxygen (O2)
14. Summarize, in one sentence, what happens during the light independent reactions of photosynthesis.
6 CO2 + 12 ATP + 12 NADPH -> C6H12O6
16. High energy electrons in Photosystem II are used to manufacture molecules of?
ATP
10. "Packets" or "Particles of light are called?
Photons
12. Which has more energy: short wavelengths of electromagnetic radiation or long wavelengths of electromagnetic readiation?
long wavelengths
2b. Name the molecule that is the sourse of (2a) gas.
Carbon dioxide (CO2)
17. What advantage does a plant obtain by having molecules that act at different wavelengths?
To capture a wider spectrum of solar energy
19. The light reactions of photosynthesis takes place in?
The inner membrane of the chloroplast
18. Why are chloroplasts Green?
Chloroplasts reflect green light.
4. When chlorophyll loses an electron, from what molecule does the chlorophyll receives an electron?
water (H2O)
20. What is the major difference between C4 and CAM photosynthesis?
C4: occurs in two different cell types (mesophyll & bundle-sheath cells)
CAM: Stomata closed during day to conserve water, stomata open during night to collect CO2
22. Does the Calvin cycle need more ATP or more NADPH?
more ATP (3:2 ratio)
13. Summarize, in one sentence, what happens during light dependent reactions of photosynthesis.
Light + 6 H2O + 6 CO2 -> C6H12O6 + 6 O2
7. Chlorophyll is green because it (absorbs, reflects, or transmits) green wavelengths of light.
reflects
3. Name two molecules that are produced during the light dependent reactions of photosynthesis and serves as temporary sites for energy storage.
ATP & NADPH
21. Under what condition would C4 and CAM photosynthesis be advantageous?
C4. high temperatures
CAM: extremely arid conditions