Photosynthesis
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1. Which combination measures the rate of photosynthesis? Direct measurement Indirect measurement A. Oxygen production Biomass increase B. Carbon dioxide uptake Biomass decrease C. Oxygen uptake Biomass increase D. Carbon dioxide production Biomass decrease. 2.In the diagram of a chloroplast below where will the Calvin cycle take place? A.I. B.II C.III D.IV IV I II II I
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photosynthesis detailed study notes for exam preparation. All topics covered completely.
Transcript of Photosynthesis
1. Which combination measures the rate of photosynthesis?Direct measurement Indirect measurement
A. Oxygen production Biomass increaseB. Carbon dioxide uptake Biomass decreaseC. Oxygen uptake Biomass increaseD. Carbon dioxide production Biomass decrease.
2. In the diagram of a chloroplast belowwhere will theCalvin cycle take place?
A. I.B. IIC. IIID. IV
IVI
IIIII
3. Which limiting factor of photosynthesis is shown below?
A. Increasing carbon dioxide concentrationB. Increasing temperature.C. Increasing light intensity
D. Increasing humidity
4. What substance is moved into the thylakoids of thechloroplast using energy derived from light?
A. Carbon dioxide (CO2) B. Protons (H+).C. Glycerate 3-phosphate (GP)D. Adenosine triphosphate (ATP)
5. Which two colours of light does chlorophyll absorb most?A. Red and yellowB. Green and blueC. Red and greenD. Red and blue
6. How is the proton gradient generated in chloroplasts during photosynthesis?A.. Flow of electrons from carrier to carrier in the thylakoid membrane causes pumping of protons across the thylakoid membrane.B. Light causes protons to flow through protein channels in the thylakoid membrane.C. Light splits water molecules in the stroma, causing the release of protons.
D. Protons are pumped across the thylakoid membrane using energy from ATP.
7. Why is the action spectrum for photosynthesis similar to the absorption spectra of photosynthetic pigments?A. Photosynthetic pigments have the same optimum temperature as the enzymes used in photosynthesis.B. Plants absorb the same photosynthetic pigments for use in photosynthesis.C.. Only wavelengths of light absorbed by pigments can be used in photosynthesis.D. The amount of energy absorbed by photosynthetic pigments is equal to the activation energy for photosynthesis.
8. Which diagram represents the process of cyclic photophosphorylation?
9. What is the advantage of having a small volume inside the thylakoids of the chloroplast?
A.. A high proton concentration is rapidly developed.
B. A high electron concentration is rapidly developed.
C. Photosynthetic pigments are highly concentrated.
D. Enzymes of the Calvin cycle are highly concentrated.
10. Which graph shows the effect of increasing carbon dioxide concentration (CO2 ) on the rate of photosynthesis?
A. B..
C. D.
11. How are photosynthesis and aerobic respiration similar?
ATP synthetase enzyme Electron transport chain NADH + H+
A.
B.
C.
D..
Key: = both have or use this = both do not have or use this
12. In the graph below which line shows an action spectrum of photosynthesis?
R ela tiv e ra te o f p h o to sy n th e s is
B DA
C
4 0 0 5 0 0 6 0 0 7 0 0
Wav e le n g th / n m(Total 1 mark)
13.. Which diagram represents the action spectrum of photosynthesis?
A .R
elat
ive
rate
of
phot
osyn
thes
is1 0 0
8 0
6 0
4 0
2 0
0 4 0 0 5 0 0 6 0 0 7 0 0
W av e len g th
B .
Rel
ativ
e ra
te o
fph
otos
ynth
esis
1 0 0
8 0
6 0
4 0
2 0
0 4 0 0 5 0 0 6 0 0 7 0 0
W av e len g th
C .
Rel
ativ
e ra
te o
fph
otos
ynth
esis
1 0 0
8 0
6 0
4 0
2 0
0 4 0 0 5 0 0 6 0 0 7 0 0
W av e len g th
D .
Rel
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te o
fph
otos
ynth
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1 0 0
8 0
6 0
4 0
2 0
0 4 0 0 5 0 0 6 0 0 7 0 0
W av e len g th
14. The diagram below shows the light independent stage of photosynthesis (the Calvin Cycle).
R ib u lo se G lu co se
b isp h o sp h a te
I (R u B P ) C O 2
T rio se P h o sp h a te II (T P )
G ly ce ra te 3 – P h o sp h a te (G P )
III
Where is energy, from ATP generated during the light dependent stage, used in this cycle?A. I and II only B.. I and III only C. II and III only D. I, II and III
15. What substance is moved into the thylakoids of the chloroplast using energy derived from light?
A. Carbon dioxide (CO2 )
B.. Protons (H+)
C. Glycerate 3-phosphate (GP)
D. Adenosine triphosphate (ATP)
16. What colours of light give the two peaks on the graph of the action spectrum of photosynthesis shown below?
% ab so rp tio n
w av e len g th o f lig h t
A. Red and infrared
B. Green and red
C. Blue and green
D.. Blue and red
17. The diagram below summarizes the light-dependent reactions in photosynthesis. What is occurring at X?
E lec tro n s
P h o tosys tem II
L igh t
E lec tro n s
L igh t
P h o tosys tem I
X
A.. ADP + phosphate ATP
B. NADP+NADPH + H+
C. H2O O2– + 2H+
D. NADPH + H+ NADP+
18. What is the first identifiable product of carbon dioxide fixation in photosynthesis?
A. Ribulose bisphosphate (RuBP)
B.. Glycerate3-phosphate (GP)
C. Triose phosphate (TP)
D. Acetyl CoA
19. What colours of light give the two peaks on the graph of the action spectrum of photosynthesis colours of light give the two peaks on the graph of the action spectrum of photosynthesis of light give the two peaks on
the graph of the action spectrum of photosynthesisshown below?
A. red and infrared B. green and red C. blue and green D.. blue and red
