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Photosynthesis Section

Total questions: 42

Worksheet time: 23mins

Name
Class
Date
1.
What is the primary function of the light-dependent reactions of photosynthesis?
a)
To produce glucose
b)
To produce NADPH and ATP
c)
To use ATP
d)
To produce RuBP
2.
The interior space of the chloroplast is called:
a)
Lamellae
b)
Grana
c)
Stroma
d)
Thylakoids
3.
The stacks of disks in the chloroplast are called:
a)
Lamellae
b)
Grana
c)
Stroma
d)
Thylakoid
4.
The disks in the chloroplast are called:
a)
Lamellae
b)
Grana
c)
Stroma
d)
Thylakoids
5.
Where does the light dependent reaction occur within the cell?
a)
The cytoplasm
b)
The nucleus
c)
The mitochondria
d)
The chloroplast
6.
What are the products of the light independent reaction?
a)
hexose sugar
b)
triose phosphate
c)
carbon dioxide
d)
RuBP
7.
Which term is the part of photosynthesis when light energy is captured and transferred to a molecule, such as ATP?
a)
light- independent reactions
b)
cellular respiration
c)
light- dependent reactions
d)
 photosynthesis
8.
The flat sac (disk) in a chloroplast where photosynthesis takes place
a)
chlorophyll
b)
pigment
c)
thylakoid
d)
Calvin cycle
9.
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
10.
What is the product of the Calvin Cycle?
a)
Rubisco
b)
Glucose 
c)
Oxygen
d)
NADPH
11.
True or False.   The Calvin Cycle can happen at night.
a)
true
b)
false
12.
What does cam plants store
a)
H20
b)
CO2
c)
Sunlight
d)
Carbon Dioxide
13.
True or False CAM plants open their stomata at night
a)
true
b)
false
14.
what part of the chloroplast does the Calvin cycle take place
a)
outer membrane
b)
thylakoid
c)
stroma
d)
inner membrane
15.
True or False Photo system 1 happens  before Photo System 2
a)
true
b)
false
16.
Cam plants have a different adaptation to what climate
a)
cold and wet
b)
hot and dry
c)
both
d)
none of the above
17.
True or False Many foods we eat are c4 plants
a)
true
b)
false
18.
Why do CAM plants open their stomata at night
a)
It just happens
b)
To reduce evaporation
c)
To collect Carbon Dioxide
d)
None of the above
19.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

20.

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

21.

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

22.

Temperatures that are too high can slow photosynthesis because

a)

stomata stay open

b)

enzymes are ruined

c)

there is not enough CO2

d)

there is too much water

23.
In the Calvin Cycle, ________ and ________ from the light dependent reactions convert PGA into G3P
a)
O2, ATP
b)
CO2, H2
c)
ADP, NADPH
d)
NADPH, ATP
24.
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 stoma
d)
Lumen of the Thylakoid
25.
True or False: The Calvin Cycle returns ADP and NADP to the light dependent phase.
a)
True
b)
False
26.
The enzyme responsible for Carbon Fixation in C3 Photosynthesis is
a)
RuBisCo
b)
PEP Carboxylase
c)
Hexokinase
d)
Pyruvate DeHydrogenase
27.
The molecule that comes out of the Calvin Cycle to produce glucose, and polymers like cellulose is:
a)
RuBP
b)
GP3
c)
3-PG
d)
G3P
28.

What is the main product of the Calvin Cycle?

a)

Stroma

b)

Thylakoids

c)

Glucose

d)

Water

29.
The loss of H2O through stomata is referred to as:
a)
Transpiration
b)
Respiration
c)
Evaporation
d)
Photorespiration
30.
The main advantage of C4 Photosynthesis is the ability to avoid:
a)
Transpiration
b)
Photorespiration
c)
Photosynthesis
d)
Signal Transduction
31.
The main advantage of CAM Photosynthesis is the ability to avoid:
a)
Transpiration
b)
Photorespiration
c)
Photosynthesis
d)
Signal Transduction
32.
Carbon fixation in CAM plants occurs during the:
a)
Day
b)
Night
33.
All forms of photosynthesis involve the enzyme RuBisCo.
a)
True
b)
False
34.
The main problem encountered by C3 plants in hot conditions is:
a)
Transpiration
b)
PhotoRespiration
c)
Dehydration
d)
Starvation
35.
How many G3P molecules make one molecule of glucose? 
a)
1
b)
2
c)
3
d)
4
36.
What happens to NADPH and ATP after they are used in the Calvin Cycle?
a)
they recycle back to the light reactions
b)
they are used to make G3P
37.
Which of the following is NOT a reactant of the Calvin Cycle?
a)
NADPH
b)
ATP
c)
Oxygen
d)
Carbon dioxide
38.

In green plants, the primary function of the Calvin cycle is to

a)

Use ATP to release carbon

b)

Split water to release oxygen.

c)

Construct sugar from carbon dioxide.

d)

Use NADPH to release carbon

39.
The two main stages of photosynthesis are the
a)
light reactions and respiration
b)
dark reactions and the Calvin cycle 
c)
light reactions and the Calvin cycle
d)
dark reactions and fermentation
40.
What does NADPH do? 
a)
carries electrons to the Calvin cycle
b)
carries electrons to the ETC
41.

To bring in nonliving carbon (CO2) and use it to make organic compounds is a process called _______________.

a)

carbon fixation

b)

cellular respiration

c)

catabolic reactions

d)

mitosis

42.
How many carbons does G3P have?
a)
1
b)
2
c)
3
d)
6

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