Photosynthesis: Production of Oxygen

Question 1

What can Photosystem II do when it absorbs light energy?

Answer 1

Remove electrons

Question 2

What are the electrons that are liberated from water used for when energized by light?

Answer 2

Reducing CO2 to produce energy-rich molecules

Question 3

____ is used in the Calvin-Benson cycle to help make glucose.

Answer 3

ATP

Question 4

Does oxygen play a direct role in photosynthesis?

Answer 4

No

Question 5

Chlorella

Answer 5

An aquatic photosynthetic unicellular organism.

Question 6

What was the independent variable in this lab?

Answer 6

Light quantity

Question 7

What was the dependent variable in this lab?

Answer 7

The rate at which Chlorella produces oxygen

Question 8

As PFR increases, O2 production over time ______.

Answer 8

Increases

Question 9

If the “no light control” rate was negative, what was happening to oxygen in the dark Chlorella tube?

Answer 9

No oxygen was being produced

Question 10

For what do plants use oxygen?

Answer 10

To extract potential energy of glucose

Question 11

How would DCMU affect the production of oxygen in plants?

Answer 11

It would prevent electrons to be removed, therefore no oxygen would be produced

Question 12

How might DCMU negatively affect the production of glucose in a plant?

Answer 12

Since no oxygen would be produced, the plant would be unable to produce glucose