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Photosynthesis reactions questions

Total questions: 40

Worksheet time: 2hrs 34mins

Name
Class
Date
1.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
2.
Which of the following is NOT a product of the light reactions?
a)
ATP
b)
NADPH
c)
Oxygen
d)
Glucose
3.

Choose the statement that best describes light reaction.

a)

It converts CO2 to sugar molecule

b)

It converts light energy to chemical energy of ATP and NADPH

c)

It takes place in the stroma

4.

Which of the following is not needed to start the light reaction

a)

H2O

b)

ADP + P

c)

CO2

5.

What is the waste-product of light-dependent reaction?

a)

oxygen

b)

water

c)

carbon dioxide

6.
In the ________________________, energy from the sun is used to make ATP 
a)
light-independent reaction
b)
dark reaction
c)
light-dependent reaction
d)
Calvin cycle
7.

Sunlight is used during photosynthesis to-

a)

Break down the xylem

b)

Break down the stomata

c)

Break down the water

d)

Capture the water

8.
What is the function of NADP+?
a)
It absorbs light
b)
It is an electron carrier
c)
It is a light-reflecting pigment
d)
It acts as long-term energy storage
9.

This molecule is similar to ADP. It carries hydrogen ions.

a)

NADP+

b)

NADPH

c)

ADP+H

d)

ATP-P

10.
What are the two products of photosynthesis?
a)
Oxygen and Carbon Dioxide
b)

Oxygen and Sugar

c)
Sunlight and Sugar
11.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
12.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

13.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
14.

Choose the statement that best describes light reaction.

a)

It converts CO2 to sugar molecule

b)

It converts light energy to chemical energy of ATP and NADPH

c)

It takes place in the stroma

15.
Where does CO2 enter the leaves through?
a)
Roots
b)
Stem
c)
Chloroplasts
d)
Stomata
16.
What is the ultimate ORIGINAL source of energy for living things
a)
Sugar
b)
Sun
c)
Moon
d)
Carbon Dioxide
17.
What is the function of NADPH and ATP?
a)
They absorb light
b)
They power the light-dependent reactions
c)
They are light-reflecting pigments
d)
They are short term energy carriers
18.
What is the main purpose of the light dependent reactions?
a)
To provide the energy for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
19.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
20.

Which of the following is produced in the light dependent reactions?

Select all that apply.

a)

oxygen

b)

ATP

c)

sugar

d)

NADPH

21.
Why are green leaves green?
a)
Chlorophyll reflects green light
b)
Chlorophyll absorbs green light
c)
Chlorophyll absorbs blue and green light
22.

Where do the light dependent reactions occur?

(a)  

23.

Where do the light independent reactions occur?

(a)  

24.
Where does the light independent reaction take place?
a)
Matrix
b)
Stroma
c)
Thylakoid membrane
d)
Cytoplasm
25.
What provides the energy for the Calvin cycle?
a)
ATP
b)
ADP
c)
NADP
d)
NADPH2
26.
What reactants are needed for the Calvin cycle?
a)
Carbon dioxide
b)
Carbon dioxide, ATP and NADPH2
c)
Carbon dioxide and glucose
d)
Oxygen and water
27.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

28.

Which of the following is true of the Calvin Cycle?

a)

carbon dioxide and energy (ATP and NADPH) are used to make organic compounds

b)

energy is absorbed from sunlight and converted to chemical energy stored in ATP and NADPH

c)

Occurs in the thylakoid

d)

Occurs in the cytoplasm

29.

Increasing carbon dioxide can increase photosynthesis, but only to a maximum rate because

a)

There are not enough RuBP molecules

b)

Oxygen cannot leave fast enough

c)

Large amounts of CO2 cannot fit in the chloroplast

d)

Calvin cycle can only go as fast as the light reactions

30.
The CO2 used in the Calvin Cycle originates from ___________.
a)

The light phase

b)

The breakdown of the remaining G3P's

c)

Diffusion through the stomata

d)

Lumen of the Thylakoid

31.

What does the Calvin Cycle begins with?

a)

Glucose

b)

The input of CO2

c)

Water

d)

ATP synthase

32.

Calvin Cycle can occur without ATP

a)

True

b)

False

33.

Energy for the Calvin cycle is supplied by which of the following from the light reactions?

a)

Carbon dioxide and water

b)

ATP and water

c)

ATP and NADPH

d)

Carbon dioxide and ATP

34.

2.The function accomplished by the light-dependent reactions is ______________.

a)

Energy and electron storage

b)

Sugar production

c)

Carbon fixation

d)

Conversion of sugar

35.

Where does dark reaction or light independent specifically occur?

a)

thylakoid membrane

b)

Stroma of the chloroplast

c)

Grana

d)

nuclear membrane

36.

Which of the following light color is absorbed by plants?

a)

Red

b)

Green

c)

yellow

d)

Light green

37.

•An enzyme that fixes carbon from atmosphere to convert it to complex macromolecule glucose.

a)

RuBP (Ribulose bisphosphate)

b)

RuBisCo (Ribulose Bisphosphate Carboxylase)

c)

PGA (3-Phosphoglycerate)

d)

G3P (Glyceraldeyhyde 3-Phosphate)

38.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
reflects green light.
d)
does not absorb violet light.
39.
Which of the following statements about the relationship between photosynthesis and cellular respiration is true?
a)
In cellular respiration the biochemical pathways of photosynthesis run in reverse.
b)
In photosynthesis the biochemical pathways of cellular respiration run in reverse.
c)
Cellular respiration occurs only in animals and photosynthesis occurs only in plants.
d)
Cellular respiration is catabolic and photosynthesis is anabolic.
40.
Where do the enzymatic reactions of the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membranes
c)
matrix of the mitochondria
d)
thylakoid space

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