6-2 The Calvin Cycle

Question 1

Why are ATP and NADPH important into the Calvin Cycle?

Answer 1

they provide the energy needed

Question 2

What is the Calvin Cycle in basic terms?

Answer 2

a serious of enzyme-assisted chemical reactions (wow! such basic terms)

Question 3

In the cycle, 6 carbon dioxide molecules are converted into

Answer 3

C6H12O6 (glucose) and other organic compounds and carbohydrates

Question 4

How does NADPH become NADPH+ in the Calvin Cycle?

Answer 4

the high energy electrons and H+ ion of NADPH are added with the carbon dioxide reactant

Question 5

What are the three factors that affect photosynthesis?

Answer 5

light intensity, carbon dioxide levels, and temperature

Question 6

When light intensity increases

Answer 6

the rate of photosynthesis increases because more electrons are excited during the light reaction

Question 7

Why does the rate of photosynthesis level off eventually regardless of further increases in light intensity?

Answer 7

because the maximum rate of photosynthesis has been reached by all the available electrons being excited

Question 8

Increasing levels of carbon dioxide

Answer 8

stimulate photosynthesis until the rate levels off

Question 9

As temperature increases

Answer 9

the rate of photosynthesis until a max. is reached, then the rate will decrease with further rises in temperature

Question 10

What happens to the enzymes and stomata after the rate of photosynthesis’ max. is reached?

Answer 10

the enzymes become ineffective and the stomata begin to close, limiting water loss and entry of carbon dioxide