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Fill in the blanks by choosing the correct option regarding chemiosmosis. "F_0 of ATPase enzyme forms a/an ____(i)_____ that carries out __(ii)__ diffusion of protons across the membrane. F_1 protrudes on the __(iii)__ surface of the __(iv)__ on the side that faces the __(v)__."

A

(i) Extrinsic protein, (ii) Active, (v) Stroma

B

(i) Transmembrane channel, (iii) Outer, (v) Stroma

C

(ii) Facillitated, (iii) Inner, (iv) Lumen

D

(iii) Outer, (iv) Lumen, (v) Thylakoid membrane

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Assertion: ATPase enzyme has two parts, One called the F_(1) is embedded in the membrane of thylakoid and forms a transmembrane channel that carries out facilitated diffusion of proton across the membrane. Reason: The other portion is called F_(0) and protrudes on the thylakoid membrane on the side that faces the stroma

Fill in the blanks by choosing the appropriate option. The noble gases can form compounds with (i) and (ii) . The mixture of (iii) and (iv) is used for respiration by divers.

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Assertion: Chemiosmosis require a membrane, a proton pump, a proton gradient and ATPase. Reason: The proton gradient is broken down due to movement of proton across the membrane to the lumen through the transmembrane channel of the F_(0) of the ATPase.

Observe the given figure of ATP sysnthesis through chemiosmosis and arrange the followign events in correct sequence (a) Movement of e^(-) through H-carrier ltBrgt (b) Shifting of protons from stroma to Lumen ltBrgt (c) Facilitated diffusion of protons across the membrane (d) Conformation change in the F_(1) particle of the ATPase (e) Formation of ATP molecule

Study the following statements regarding chemiosmotic hypothesis in mitochondria and select the correct ones. (i) F_(1) headpiece contains the site for the synthesis of ATP from ADP + Pi . (ii) F_(0) par forms the channel through which protons cross the inner membrane. (iii) For each ATP produced, 2H^(+) pass through F_(0) from the intermembrane space to the matrix down the electrochemical proton gradient.

How many statements about diffusion is /are false ? (i) The diffusion rate depends on the size of the substrate. (ii) Diffusion across the membrane depends upon its solubility in lipids. (iii) Membrane protein provides sites for a hydrophilic substance to cross the membrane. (iv) Facilitated diffusion is carried out by Proteins .

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