Hill's Reaction

Q. Water splitting complex is associated with which of the following?

1. PS-I and is located on the inner side of thylakoid membrane
2. PS-II and is located on the inner side of thylakoid membrane
3. PS-Il and is located on the outer side of thylakoid membrane
4. PS-I and is located on the outer side of thylakoid membrane

Q.

Photolysis of water takes place in

1. Calvin cycle

2. Glycolysis

3. Light phase

4. Dark phase

Q.

Which of the following statements best represents the relationships between the light reactions and Calvin cycle?

1. The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle providesthelight reactions with water to split.

2. The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP+ to the light reactions.

3. The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions.

4. The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies thelightreactions with sugars to produce ATP.

Q. Read the following functions carefully:
(i) $H_{2}O$ splitting
(ii) $O_2$ release
(iii) NADH formation
(iv) ATP consumption
How many functions given above are carried out by PS-I during Z-scheme?

1. 4
2. \N
3. 2
4. 1

Q. Hill reaction occurs in

1. High altitude plants
2. Total darkness
3. Absence of water
4. Presence of ferricyanide

Q. Photolysis of water was first discovered by

1. D.I.arnon
2. F. Bendall
3. R. Hill
4. Van Niel

Q. Hill reaction occurs in

1. high altitude plants
2. absence of water
3. total darkness
4. presence of ferricyanide

Q.

Question 10
Splitting of water is associated with
(a) photosystem I
(b) lumen to thylakoid
(c) both photosystem I and II
(d) inner surface of thylakoid membrane

Q. Water splitting complex is associated with

1. outer membrane of chloroplast
2. inner membrane of chloroplast
3. stroma
4. PS-II

Q. What is the name of scientist who showed that sunlight is essential for photosynthesis?

1. Jan Ingenhousz
2. Joseph Priestley
3. Robert Hooke
4. None of the above

Q. Isolated chloroplast placed under light but in absence of $C{O}_2$ will release $O_2$ as byproduct but not sugar. Which scientist from the following options showed this observation from his experiment?

1. Melvin Calvin
2. Joseph Priestley
3. Robert Hill
4. Engelmann

Q. Match the following essential elements and their functions in plants.

	Elements		Functions
(a)	Iron	(i)	Photolysis of water
(b)	Magnesium	(ii)	Required for chlorophyll biosynthesis
(c)	Chlorine	(iii)	Maintains anion cation balance
(d)	Manganese	(iv)	Helps to maintain ribosome structure

Select the correct option.

1. (a) (b) (c) (d)
   (ii) (iv) (i) (iii)
2. (a) (b) (c) (d)
   (iv) (ii) (iii) (i)
3. (a) (b) (c) (d)
   (ii) (iv) (iii) (i)
4. (a) (b) (c) (d)
   (iv) (ii) (i) (iii)

Q. Select correct match:

$\begin{array}{cccc}\text{(a)}& \text{OEC}& \left(i\right)& \text{Primary e-acceptor}\\ \text{(b)}& \text{NADP}& \left(ii\right)& \text{Photolysis of}\\ & & & H_{2}O\\ \text{(c)}& \text{Succinyl}& \left(iii\right)& \text{Outer surface of}\\ & \text{CoA}& & \text{thylakoid membrane}\\ \text{(d)}& \text{Pheophytin}& \left(iv\right)& \text{Chlorophyll}\\ & & & \text{synthesis}\end{array}$

1. $a\left(ii\right),b\left(iii\right),c\left(iv\right),d\left(i\right)$
2. $a\left(iii\right),b\left(i\right),c\left(ii\right),d\left(iv\right)$
3. $a\left(ii\right),b\left(iii\right),c\left(i\right),d\left(iv\right)$
4. $a\left(i\right),b\left(ii\right),c\left(iii\right),d\left(iv\right)$

Q. Photolysis of water is caused by

1. $PS-I$
2. $PS-II$
   
3. $PS-I$ and $PS-II$
4. None of the above

Q. Water splitting complex is associated with which of the following?

1. PS-I and is located on the inner side of thylakoid membrane
2. PS-II and is located on the inner side of thylakoid membrane
3. PS-Il and is located on the outer side of thylakoid membrane
4. PS-I and is located on the outer side of thylakoid membrane

Q. Read the assertion and reason carefully to mark the correct option in question.

Assertion: Stroma lamellae have both $PSI$ and $PSII$ but the membrane of grana lack $PSII$ as well as $NADP$ reductase.

Reason: Cyclic photo-phosphorylation also occurs when only light of wavelength below $680nm$ is available for excitation.

1. If both assertion and reason are false.
2. If assertion is true but the reason is false.
3. If both assertion and reason are true and the reason is the correct explanation of the assertion.
4. If both assertion and reason are true but the reason is not the correct explanation of the assertion.

Q. Choose the correct statement(s) for light reaction:
I. Oxygen released during photosynthesis comes from molecules of carbon dioxide.
II. NADPH is a product of light reaction.
III. Photo-oxidation of water forms H+, O2 and e- .
IV. One photosynthetic unit consists of a photochemical reaction centre and antennae complex

1. I, III, IV
2. II, III, IV
3. Only II
4. Only I and II

Q. Which one of these is not correct regarding peroxisomes?

1. Single membrane bound organelles
2. Perform photorespiration in $C_3$ plants
3. Take part in synthesis and storage of lipids
4. Protect a cell from the toxic effects of $H_2{O}_2$

Q. Isolated chloroplast placed under light but in absence of $C{O}_2$ will release $O_2$ as byproduct but not sugar. Which scientist from the following options showed this observation from his experiment?

1. Melvin Calvin
2. Joseph Priestley
3. Robert Hill
4. Engelmann

Q. Cells that have lost their water content are said to be deplasmolysed.

1. True
2. False

Q. Assertion :While going down the loop of Henle, the filtrate becomes hypotonic. Reason: The descending limb of loop of Henle is impermeable to both water and electrolytes.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q. Oxygen is evolved in photosynthesis during:

1. Light independent reactions
2. Light dependent reactions
3. Calvin cycle
4. C${}_4$ cycle

Q. What change is observed in the rate of photosynthesis at higher temperatures?

Q. does C2 cycle produce carbohydrates if yes could you explain me with reactions pls

Q. Photolysis of water requires

1. Light
2. Chlorophyll
3. Electron transport
4. Both A and B

Q. Photolysis of water was first discovered by

1. D.I.arnon
2. Van Niel
3. R. Hill
4. F. Bendall

Q. Select correct match:

$\begin{array}{cccc}\text{(a)}& \text{OEC}& \left(i\right)& \text{Primary e-acceptor}\\ \text{(b)}& \text{NADP}& \left(ii\right)& \text{Photolysis of}\\ & & & H_{2}O\\ \text{(c)}& \text{Succinyl}& \left(iii\right)& \text{Outer surface of}\\ & \text{CoA}& & \text{thylakoid membrane}\\ \text{(d)}& \text{Pheophytin}& \left(iv\right)& \text{Chlorophyll}\\ & & & \text{synthesis}\end{array}$

1. $a\left(ii\right),b\left(iii\right),c\left(iv\right),d\left(i\right)$
2. $a\left(ii\right),b\left(iii\right),c\left(i\right),d\left(iv\right)$
3. $a\left(iii\right),b\left(i\right),c\left(ii\right),d\left(iv\right)$
4. $a\left(i\right),b\left(ii\right),c\left(iii\right),d\left(iv\right)$

Q. Energy released during movement of electrons through the photosystems in photosynthesis is used to drive protons across the membrane against concentration gradient. As a result the protons accumulate in

1. stroma of chloroplast
2. thylakoid lumen
3. matrix of mitochondrion
4. none of these

Q. Select correct match:

$\begin{array}{cccc}\text{(a)}& \text{OEC}& \left(i\right)& \text{Primary e-acceptor}\\ \text{(b)}& \text{NADP}& \left(ii\right)& \text{Photolysis of}\\ & & & H_{2}O\\ \text{(c)}& \text{Succinyl}& \left(iii\right)& \text{Outer surface of}\\ & \text{CoA}& & \text{thylakoid membrane}\\ \text{(d)}& \text{Pheophytin}& \left(iv\right)& \text{Chlorophyll}\\ & & & \text{synthesis}\end{array}$

1. $a\left(ii\right),b\left(iii\right),c\left(iv\right),d\left(i\right)$
2. $a\left(ii\right),b\left(iii\right),c\left(i\right),d\left(iv\right)$
3. $a\left(iii\right),b\left(i\right),c\left(ii\right),d\left(iv\right)$
4. $a\left(i\right),b\left(ii\right),c\left(iii\right),d\left(iv\right)$

Q. Choose the correct statement(s) for light reaction:
I. Oxygen released during photosynthesis comes from molecules of carbon dioxide.
II. NADPH is a product of light reaction.
III. Photo-oxidation of water forms H+, O2 and e- .
IV. One photosynthetic unit consists of a photochemical reaction centre and antennae complex

1. I, III, IV
2. II, III, IV
3. Only II
4. Only I and II