Biology Final Exam Study Guide- Photosynthesis
E-2b: Explain the functions of chloroplast.
1.
Describe the function of the following plant parts. Know where they are located. a.
Chloroplast- the organelle in which photosynthesis takes place. Found in plant cells. b.
Thylakoid- structure inside of chloroplast. Light dependent reactions take place here. c.
Grana- stacks of thylakoids d.
Stroma- space outside of thylakoid, inside chloroplast. Calvin cycle takes place here.
2.
Label the chloroplast below. Include: thylakoid, stroma, grana, lumen (inner thylakoid)
3.
Where does the light dependent reaction take place? (Label on diagram above) thylakoid _________________________
4.
Where does the light-independent reaction take place? (Label on diagram above) stroma _________________________
E-2c: Explain the interaction between pigments, absorption of light, and reflection of light.
1.
What is the main pigment involved in photosynthesis? chlorophyll ____________________________________________
2.
Why do we see green in plants? Chlorophyll absorbs all colors except for green, which is reflected . _________________
__________________________________________________________________________________________________
3.
What role does chlorophyll play in photosynthesis? Absorbs solar energy (sunlight) ______________________________
E-2d: Describe the light dependent and light independent reactions of photosynthesis.
1. Write the overall equation for photosynthesis using chemical formulas.
CO
2
+ H
2
O + sunlight  C
6
H
12
O
6
+ O
2

2. What does photosynthesis require in addition to water and carbon dioxide? ___ sunlight ______ _____________________
3. What are the 2 stages of photosynthesis called? Light-dependent reactions and light-independent reactions ___________
4. Draw and label a diagram of light dependent reactions. Explain what happens during each step.
See me for this, or use your notes.
1.
What is used during the light dependent reaction? Water (H
2
O) and sunlight _____________________________________
2.
What is produced during the light dependent reaction? Oxygen (O
2
), NADPH, and ATP _____________________________
3.
How does oxygen leave the plant? Through the stomata ______________________________________________________
4.
The light energy from the sun is converted into chemical energy and stored in the stems and roots.
5.
What happens to CO2 in the Calvin cycle (light-independent reaction)? It is converted into glucose ___________________
6.
ATP and NADPH provide energy for the Calvin cycle. This energy comes from the ______ light dependent reactions_.
7.
What are the products of the Calvin cycle? C
6
H
12
O
6
(glucose), ADP, NADPH
8.
Label the diagram below. Be able to describe what happens at each phase.
See me, or use your notes

E-2e: Relate the products of the light-dependent reactions to the products of the light-independent reactions.
1.
Complete the illustration of the overview of photosynthesis by writing the products and reactants of the process, as well as the energy source that excites electrons.
2
2
Light dep. reactions
Light indep. reactions
Cellulose
2 3-C Mol
C
6
H
12
O
6 starch
2
2.
Relate the products of the light-dependent reactions to the products of the light-independent reactions. ATP and NADPH are produced during the light-dependent reactions. These products are used in the Calvin Cycle
(light independent reactions) to produce glucose. (They provide energy to fuel the reactions.) The resulting
ADP and NADP+ then go back to the thylakoid to accept more energy in the light dependent reactions.
3.
4. What are 3 factors that affect the rate of photosynthesis?
Temperature, carbon dioxide, water, sunlight