Here are some questions regarding the photosynthesis part of my site.

Multiple choice questions

1. Which chlorophyll molecule is found in Photosystem I?

A. P670

B. P680

C. P700

D. P600

2. Which chlorophyll molecule is found in Photosystem II

A. P670

B. P680

C. P700

D. P600

3. The net amount of carbon dioxide uptake per unit of light energy absorbed is called the ____________ of a plant.

A. photosynthetic efficiency

B. rate of photosynthesis

C. irradence level

D. light saturation point

4. Carbon fixation is used by:

A. C3 plants

B. C4 plants

C. CAM plants

D. All of the above

5. What percentage of light that reaches the leaf is used and turned into carbohydrates?

A. 19%

B. 24%

C. 5%

D. 8%

6. Chlorophyll is the green liquid found in the thylakoid disks?

A. True

B. False

7. What is responsible for splitting water molecules?

A. ATP-ase

B. Z protein

A. proton gradient

D. B6-f complex

8. Chlorophyll b is:

A. Only found in photosystem I

B. Only found in photosystem II

C. Responsible for cyclic electron flow

D. An accesory pigment

9. Chemiosmosis produces:

A. NADPH

B. NAD+

C. Protons

D. ATP

10. Which of the following statements are not true about G3P?

A. G3P is the primary end product of the Calvin cycle.

B. G3P may be transported into the vascular bundles and and used to produce glucose or sucrose.

C. G3P may be converted into glucose and polymerized into startch within the stroma of chloroplasts.

A. They are all true

11. The point at which the rate of photosynthetic CO2 uptake exaclty equals the rate of respiratory CO2 evolution is called:

A. Irradance

B. Light-compensation point

C. Photosynthetic

D. Rate of photosynthesis

12. Through light reactions, ________ are able to transfer photon energy into ADP and NADP+, forming ATP and NADPH.

A. photosystems

B. chlorophyll a

C. Z protein

D. enzymes

13. Identify A, B, C, and D in the following image:

14. Which of the following is not an accessory pigment?

A. Carotein

B. Chlorophyll b

C. Chlorophyll a

D. both B and C

15. Which of the following help contol the stoma.

A. K+ ions

B. H+ ions

C. Osmosis

D. all of the above

16. The Z protein is associated with Photosystem II.

A. True

B. False

17. How many protons must be translocated for 3 ATP to be formed by chemiosmosis?

A. 4

B. 3

C. 12

D. 7

18. Where do the H+ ions go once the H2O molecule is seperated?

A. Thylakoid space

B. Stroma

C. Cytoplasm

D. Stoma

19. Xanthophyll and Antholcyanins are:

A. photosystems

B. enzymes

C. accessory pigments

D. proteins

20. The chemical difference between chlorophyll a and clorophyll b is:

A. There is none, the difference is in the proteins they associate with in the photosystem.

B. chlorophyll a contains a methyl group where chlorophyll b contains a aldehyde group.

C. chlorophyll b contains a methyl group where chlorophyll a contains a aldehyde group.

D. The phytol chain is longer in chlorophylla than it is in chlorophyllb

Definitions:

Cuticle:

Epidermis Layer:

Mesophyll Layers:

Guard Cells:

Stomata (stoma):

Transpiration:

Vascular bundles:

Stroma:

Thylakoids:

Grana (granum):

Lamellae (lamella):

Thylakoid membrane:

Thylakoid lumen:

Answers

Short Answer Questions

1. How does transpiration assist the photosynthetic process?

2. Why do plants appear green?

3. What is an accessory pigment?

4. Describe and explain Priestley's experiment.

5. Why do plants change from green to red-orange-yellow in the fall?

Answers

Major Concept Question

1. What begins the process of photosynthesis (light reactions)?

Answer

Additional Major Concept Questions

2. Summarize the steps in noncyclic electron flow.

3. Describe the 3 phases of the Calvin Cycle.

4. Describe the difference between C3 plants and C4 plants.

Answers

Extra Questions

2. How do guard cells control the size of stomata?

3. What dimensions does a typical plant cell chloroplast have?

4. Describe the internal structure of a chloroplast.

5. What is the endosymbiotic theory?

6. What is the overall equation for photosynthesis?

7. What is Cyclic Electron Flow?

8. What is the Calvin Cycle?

9. Name the main differences between photosynthesis and cellular restpiration

10. What is a photon and a photosystem?

11. What are alternative mechanisms of carbon fixation?

Answers