The Light Reactions Quiz
1. ___ The electron ejected in Photosystem II is replaced by
a)
an electron released when the PEA splits in two
b)
an electron released when water is split
c)
there is no electron ejected in Photosystem II
d)
the electron is not replaced
2. ___ How many electron transport chains will you find in the light reactions?
a)
0
b)
1
c)
2
d)
3
3. ___ The products of the light reactions are:
a)
ADP and NADPH
b)
ATP and NADPH
c)
sugars
d)
starches
4. ___ In order for the light reactions to occur the plant must have:
a)
Solar energy
b)
Water
c)
Chlorophyll
d)
All of these
5. ___ In order for energy to be stored as ATP:
a)
a phosphate has to be taken away from ADP
b)
a phosphate has to be added to ADP
c)
an adenosine molecule is added
d)
Energy is not stored by ATP
6. ___ Which step is the beginning of photosynthesis?
a)
Pigments in water absorb light
b)
Pigments in Photosystem II absorb light
c)
High energy electrons move through the electron transport chain
d)
ATP allows ions to pass through the thylakoid membrane
7. ___ The correct formula for photosynthesis is:
a.
b.
c.
d.
6O2 + 6H20  C6H12O6 + 6CO2
C6H12O6 + 6H20  6CO2+ 6O2
6CO2 + C6H12O6  6H20+ 6O2
6CO2 + 6H20 + light energy  C6H12O6 + 6O2
8. ___ The light reactions occur in the:
a.
b.
c.
d.
stroma
thylakoid
stem
inner membrane
9. ___ What do plants do with oxygen:
a.
b.
c.
d.
Use it as a component of sugar
Store it in the bonds of ATP
Fix it to a 5 carbon molecule
Release it into the environment
10. __ What happens to the hydrogen ions released when water is split in the light reactions?
a.
b.
c.
d.
Nothing, water isn’t used in the light reactions
The ions are picked up by NADP
The ions bond with ADP to form ATP
They are released into the atmosphere
11. __ What happens to the oxygen released when water is split in the light reactions?
a.
b.
c.
d.
Nothing, water isn’t used in the light reactions
It is picked up by NADP
It bonds with ADP to form ATP.
It is released into the atmosphere.
12. __ What happens to the electrons released when water is split in the light reactions?
a.
b.
c.
d.
Nothing, water isn’t used in the light reactions
They are picked up by NADP
They move down the electron transport chain releasing energy
None of these
13. __ Chlorophyll absorbs all colors of light except:
a)
blue
b)
red
c)
yellow
d)
green
14. __ When light energy does not directly strike chlorophyll a:
a)
It is directed to chlorophyll a by accessory pigments
b)
Nothing happens
c)
The plant dies
d)
None of these