Unit 2 Exam

Question 1

How. much of the output of the sun is outside the visible range and unavailable for photosynthesis?

Answer 1

60%

Question 2

How much is reflected and transmitted?

Answer 2

8%

Question 3

How much is converted into heat?

Answer 3

8%

Question 4

how much yeild is in the form of carbohydrates?

Answer 4

4%

Question 5

How much energy is lost due to photrespiration and other process?

Answer 5

20%

Question 6

What is the equation for photosynthesis?

Answer 6

CO2 + H20 —> C6H12O6 + O2

Question 7

What is oxidised in photosynthesis?

Answer 7

CO2 to C6H12O6

Question 7

What is oxidised in photosynthesis?

Answer 7

CO2 to C6H12O6

Question 8

What is reducted in Photosynthesis?

Answer 8

H20 to O2

Question 9

What does reduction mean?

Answer 9

The gain of electrons
- hydrogen is gained or oxygen is lost

Question 10

What is the electron donor for photosynthesis reactions?

Answer 10

Water

Question 11

What does oxidation mean?

Answer 11

The loss of electrons

Question 12

What does the loss of water produce?

Answer 12

electrons, protons, and carbon. The electrons and protons are incorporated into carbohydrate product and O2 is a by-product

Question 13

What is photosynthesis?

Answer 13

The oxidation of water with carbon produced as a byproduct throught thr electron transport train to the reduction of CO2

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Question 14

Where does Light-reactions occur and what are they

Answer 14

Oxidation - it occurs ON the thylakoid membrane of the chloroplast. Light-reactions are the first process of photosynthesis in which solar energy is converted into Chemical energy - ATP NADPH

Question 15

Where does the calvin cycle occur and what is it?

Answer 15

Reduction - occurs IN the stroma that the Thylakoids float in and is where carbon is fixed into sugars

Question 16

Identify the Chloroplast and all the parts

Answer 16

https://www.google.com/url?sa=i&url=https%3A%2F%2Fopenoregon.pressbooks.pub%2Fmhccmajorsbio%2Fchapter%2F8-2-main-structures-and-summary-of-photosynthesis%2F&psig=AOvVaw2qQ8A3injjsjqFG_hYQAaq&ust=1666722379214000&source=images&cd=vfe&ved=0CAwQjRxqFwoTCLCGuO2–foCFQAAAAAdAAAAABAD

Question 17

What is the Calvin cycles 3 main steps?

Answer 17

1. Carboxylation, 2. Reduction, 3. Regeneration

Question 18

What is Carboxylation

Answer 18

The addition os RuBP and then catalyzed by rubisco

Question 19

Wht is Reduction in the calvin cycle

Answer 19

NADPH transfers high energy electrons

Question 20

What is regeneration in the Calvin cycle

Answer 20

3-Carbon compounds are reorganised and combined to produce RuBP which is destroyed in carboxylation

Question 21

What are starch granules

Answer 21

Excess carbohydrates are converted into starch and stored. The formation of them provides a source of carbohydrates that can be used at night or in the absence of light.