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Photosynthesis Limiting Factors

Total questions: 11

Worksheet time: 17mins

Name
Class
Date
1.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O2+ 6H2O → C6H12O6+ 6O2

b)

C6H12O6 + 6H2O→ 6O2+ 6O2

c)

6CO2+ 6H2O→ C6H12O6+ 6O2

d)

6O2 + 6H2O→ C6H12O6 + 6CO2

2.
Which of these will not affect photosynthesis?
a)
Light
b)
Temperature
c)
Glucose Availability
d)
Carbon Dioxide
3.
What is a limiting factor?
a)
The factor which increases the rate of a reaction
b)
The factor that limits the reaction rate
c)
The factor that limits the rate at which an enzyme is destroyed
4.

Which of these pairs represents the reactants of photosynthesis?

a)

Oxygen and water

b)

Glucose and oxygen

c)

Water and glucose

d)

Carbon dioxide and water

5.

Which of these pairs represents the products of photosynthesis?

a)

Oxygen and water

b)

Glucose and oxygen

c)

Water and glucose

d)

Carbon dioxide and water

6.
What is the purpose  of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
7.

What happens when enzymes are heated to a high temperature?

a)

The enzymes die.

b)

The shape of the enzyme are changed and it denatures

c)

The enzymes' amino acid sequence changes.

d)

The enzymes remain the same

8.

Where does Photosynthesis take place in a plant cell?

a)

Nucleus

b)

Chloroplast

c)

cytoplasm

d)

mitochondria

9.

When there is not enough light.....

a)

...the rate of photosynthesis is at the optimum.

b)

...the rate of photosynthesis is limited.

c)

...the rate of photosynthesis will not be affected.

10.

Why does the rate of photosynthesis decrease at high temperatures?

a)

Enzymes are denatured

b)

Enzymes do not have enough kinetic energy

11.
Which choice correctly shows the gases that enter and exit plants during photosynthesis?
a)
Enter: Oxygen
Exit: Carbon dioxide
b)
Enter: Water vapor
Exit: Glucose
c)
Enter: Carbon dioxide
Exit: Oxygen
d)
Enter: Light
Exit: Water vapor