1. What is an autotroph? Give examples:
Photosynthesis Worksheet
2. What is a Heterotroph? Give examples.
3. Which molecule is used by living things to store and transfer energy?
4. What are the parts of an ATP molecule?
A = _______________________
B= ________________________
C = _______________________
5. Write the equation that shows how ATP is changed into ADP.
6. Which molecule stores more than 90 times the energy in ATP?
7. What is the overall reaction for photosynthesis?
8. Where does the energy for photosynthesis come from?
9. What plant pigments are involved in photosynthesis?
10. Explain why chlorophyll appears green to us in terms of what happens to different wavelengths of light that strike a chlorophyll molecule.
11. How does the amount of energy in light change as the wavelength increases?
12. Which colors of light are most effective for photosynthesis? Explain why.
13. In what organelle of a plant cell does photosynthesis take place?
14. What are the two stages of photosynthesis?
15. In which part of the chloroplast does each stage occur?
16. What happens to water molecules in the light reactions?
17. What photosynthesis waste product is formed in the light reactions?
18. What two products of the light reactions are used up in the Calvin cycle?
19. What happens to carbon dioxide molecules in the Calvin cycle reactions?
20. Label the diagram below to summarize the two stages of photosynthesis. Use the word bank below the diagram to fill in the blanks.
2. 3.
1.
7 .
8._
11.
6.
5.
9.
10.__
14. 13.
Word list: thylakoids granum stroma light reactions
Calvin cycle light
H
2
O sugar
CO
2
NADPH
ATP
NADP +
O
2
ADP + P
.
.
.