the diagram below shows a simplified diagram of photosynthesis involving … · 2020. 2. 16. · 1....
TRANSCRIPT
1. The diagram below shows a simplified diagram of photosynthesis involving C3 plant.
a. Photosystem consists of two main components; chlorophyll molecules and
specialized pigment called reaction centre. State the function of every component
during photoactivation.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
b. U is by-product of photosynthesis. What is U?
__________________________________________________________________
c. Name enzyme V that catalyzed the carbon dioxide fixation in Calvin cycle.
__________________________________________________________________
d. What is the role of NADPH in photosynthesis
__________________________________________________________________
e. In the diagram above, T is the important factor in photolysis. What is T?
__________________________________________________________________
f. What is meant by photolysis of water?
__________________________________________________________________
__________________________________________________________________
2. The diagram below shows Calvin cycle in the light independent reaction.
a. Which part of chloroplast that the above reaction occurs?
__________________________________________________________________
b. What is X?
__________________________________________________________________
c. Name the enzyme that fix X to form 3-phosphoglycerate
__________________________________________________________________
d. Y and Z are the products of light dependent reaction.
i. What is Y?
____________________________________________________________
ii. What is Z? state the importance of Z in Calvin cycle.
____________________________________________________________
____________________________________________________________
3. The diagrams below show two pathways, P and Q for light independent reaction. These
pathway are ideal for photosynthesis to be carried out in hot and dry condition.
a. Name pathways P and Q
P : ___________________________________________________
Q : __________________________________________________
b. Give two differences between pathway P and Q.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
c. Enzyme S is used by most plant to carry out light independent reaction whereas
plants that used pathways P and Q used enzyme R together with enzyme S.
i. Name enzyme R according to IUB
__________________________________________________________________
ii. Give the advantage of enzyme R compared to enzyme S.
____________________________________________________________
____________________________________________________________
____________________________________________________________
4. There are two phases in photosynthesis.
a. Where is the location for:
i. Light dependent reaction : _________________________________
ii. Light independent reaction : __________________________________
b. What is the function of chlorophyll?
__________________________________________________________________
c. Name molecule that acts as carbon dioxide acceptor in Calvin cycle?
__________________________________________________________________
d. Name the products of light dependent reaction.
__________________________________________________________________
e. State the function of the products in light independent reaction
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
f. State two characteristics that distinguish between cyclic photophosphorylation
and non-cyclic photophosphorylation.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
g. How many cycle of light dependent reaction and light independent reaction to
produce one molecule of glucose?
__________________________________________________________________
5. Diagram below shows one of the cycle in photosynthesis.
a. What is P, Q, R, S, T, U and V?
P: __________________________ Q:___________________________
R: __________________________ S:____________________________
T: __________________________ V:____________________________
U: __________________________
b. Give an example of pelan with the above cycle.
__________________________________________________________________
c. Explain the problem faced by the above plant that causes the plant to have an
alternative cycle.
______________________________________________________________
______________________________________________________________
______________________________________________________________
6. FIGURE shows the metabolism cycle of plants X.
a. Name the mechanism of carbon fixation of plant X.
__________________________________________________________________
b. State the advantage of plant X.
__________________________________________________________________
__________________________________________________________________
c. Substance Y is required to convert OAA to substance Z. Identify Y and Z.
Y:__________________________________________________________
Z: ___________________________________________________________
d. Name cycle W.
________________________________________________________________
e. List THREE phases of this cycle.
________________________________________________________________
f. State ONE product from this reaction.
__________________________________________________________________
7. FIGURE shows the summary of the light dependent reaction in photosynthesis.
g. Name the substance A and B.
A :_______________________________________________________________
B :_______________________________________________________________
h. Name the process M and N.
M: _______________________________________________________________
N: _______________________________________________________________
i. Where do PS I and PS II occur?
__________________________________________________________________
j. State the source of electron for non – cyclic photophosphorylations in
photosynthesis.
__________________________________________________________________
k. Give TWO differences between cyclic and non-cyclic photophosphorylations in
photosynthesis.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
8. FIGURE 4 shows a Hatch-Slack pathway found in many tropical plants.
l. Name cell X and cell Y.
Cell X : ___________________________________________________________
Cell Y : ___________________________________________________________
m. Why photosynthesis is difficult for most plant in the very hot condition and dry
environment such as the desert?
__________________________________________________________________
__________________________________________________________________
n. What is the advantage of C4 pathway in the photosynthesis process.
__________________________________________________________________
o. State TWO differences between the chloroplast in cell X and cell Y.
_________________________________________________________________
__________________________________________________________________
p. Name the CO2 acceptor in :
Cell X : ________________________________________________________
Cell Y : ________________________________________________________
q. Give ONE example of plant that has this pathway.
__________________________________________________________________
9. The diagram below shows the process in photosynthesis.
r. Label the following,
A: _____________________
B: _____________________
C: _____________________
s. Where does the reaction takes place?
i. Light dependent reaction : _______________________
ii. Calvin cycle : ________________________
t. What are the products produced by light dependent reaction?
____________________________________________________
u. Give differences between photosynthesis and aerobic respiration.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
A
B
C
10. FIGURE shows a pathway of glucose production in a type of plant.
v. State the type of plant that have the pathway as in FIGURE.
__________________________________________________________________
w. What is the purpose of cycle S?
__________________________________________________________________
x. What is the advantage of enzyme Q?
__________________________________________________________________
y. Name process X.
__________________________________________________________________
z. Give the name of the substances in cycle S.
I
II
III
IV
: _____________________________________
: _____________________________________
: _____________________________________
: _____________________________________
aa. Name the enzyme that is used in cycle T.
__________________________________________________________________
bb. Name the condition which can lead to the above pathway.
__________________________________________________________________
11. Figure below shows the cross-section of a cell organelle.
cc. Label structure A and B
__________________________________________________________________
__________________________________________________________________
dd. Which structure carries out the light dependent reaction stage of photosynthesis?
__________________________________________________________________
ee. Name the three products of the light dependent reaction stage of photosynthesis.
__________________________________________________________________
ff. What is the final electron acceptor in the electron transport chain?
__________________________________________________________________
gg. Name the gas that is produce during photosynthesis.
__________________________________________________________________
hh. Explain the process that leads to the production of the gas mention in (e).
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
C
B A
12. The diagram below shows some of the processes which occur in the light independent
reaction of photosynthesis.
ii. Name the substances represented by the letters X and Y.
X : _________________
Y : _________________
jj. State the origin of the NADPH + H+ and the ATP used in the light independent
reaction.
______________________________________________________________
kk. Where in the chloroplast does the light independent reaction occur?
______________________________________________________________
13. The diagram below shows the dark reaction of photosynthesis.
ll. This cycle of reaction is often named after its discoverer. Give this name.
______________________________________________________________
5-carbon compound + X
regeneration
Triose phosphate
Glucose phosphate
NADPH + H+
ATP
Y
mm. Name the molecules which enter the cycle at R and T.
R : ________________________
T : ________________________
nn. Give the full names of the molecules S and U.
S : ________________________
U : ________________________
oo. What is produced at V?
_______________________________________________________________
14. FIGURE shows the C4 pathway in C4 plants.
pp. What is another name for C4 pathway?
________________________________________________________________
qq. What are A, B, C and D?
A: ______________________________________________________________
B: ______________________________________________________________
C: ______________________________________________________________
D: ______________________________________________________________
rr. List THREE major steps in the C4 pathway.
i: ______________________________________________________________
ii: ______________________________________________________________
iii: ______________________________________________________________
ss. Where does the Calvin cycle take place in C4 plants?
_________________________________________________________________
tt. Give an example of a C4 plants.
______________________________________