The diagram below shows a simplified diagram of ...
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: __________________________ R: __________________________ T: __________________________ U: __________________________
Q:___________________________ S:____________________________ V:____________________________
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. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________
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