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Worksheets6.2 Light dependent reaction
Total questions: 15
Worksheet time: 2hrs 49mins
Name
Class
Date
1.
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
2.
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
3.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
4.
ATP gets formed in the light dependent reaction by which process?
a)
Chemiosmosis
b)
Photosmosis
c)
Diffusion
d)
Active Transport
5.
Match the reaction center in PSI & PSII with its name.
a)
PSI is named P700
b)
PSI is named P680
c)
PSII is named P700
d)
PSII is named P680
6.
Where does photoactivation of electrons take place
a)
Photosystems I and II
b)
Photosystem I only
c)
Photosystem II only
d)
Electron Transfer Chain
7.
What supplies the electrons that are lost in photosystem I (PSI)?
a)
the electrons from PS II
b)
water
c)
glucose
d)
oxygen
8.
What is the purpose of splitting water in PS2 of the light dependent reaction?
a)
Provides e- for PS2 and H+ for the thylakoid space
b)
To produce Oxygen for animals
c)
There is no purpose
9.
It is important to create a concentration of H+ in the thylakoid space so that the H+ can diffuse through_________ to create ______.
a)
ATP synthase, ATP
b)
NADH, NADPH
c)
proton pump, protons
10.
According to this absorption spectrum, what color is not used by the chlorophyll pigments?
a)
green
b)
blue
c)
yellow
d)
red
11.
Protons move into the thylakoid due to the
a)
concentration gradient in the stroma
b)
Brownian motion of the protons.
c)
peer pressure of the cool electrons in the stroma.
d)
movement of electrons through the electron transport chain
12.
Which of the following is NOT a product of the light reactions?
a)
ATP
b)
NADPH
c)
Oxygen
d)
Glucose
13.
Cyclic photophosphorylation differs from non-cyclic photophosphorylation in that _____________ is not made from the process.
a)
ATP
b)
G3P
c)
NADH
d)
NADPH
14.
The role of water molecule in light dependent reaction is to …
a)
Hydrolyse NADP+ at the end of the electron transport chain.
b)
Involve directly in the production of ATP.
c)
Replace the excited electron of reaction centre molecule in photosystem II.
d)
Involve directly in Calvin cycle.
15.
What is the primary function of cyclic electron flow?
a)
to produce additional NADPH
b)
to produce additional ATP
c)
to produce additional oxygen
d)
to produce additional carbon dioxide
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