The Chemiosmotic Hypothesis

Q. Chemiosmotic hypothesis is related to

1. photolysis of water
2. synthesis of ATP
3. conversion of NADP+ to NADPH
4. osmoregulation of ions

Q. Chemiosmotic hypothesis is related to

1. photolysis of water
2. synthesis of ATP
3. conversion of NADP+ to NADPH
4. osmoregulation of ions

Q. Match the following processes with their location of occurrence in the cell: Process Location

A.	Proton moves into	I.	Mitochondria
B.	Respiration	II.	Thylakoid membrane
C.	$C_3$ cycle	III.	Thylakoid lumen
D.	$\mathrm{PS}I$ and $\mathrm{PS}\mathrm{II}$	IV.	Stroma

1. A-III, B-I, C-IV, D-II
2. A-IV, B-I, C-II, D-III
3. A-II, B-I, C-III, D-IV
   
4. A-III, B-IV, C-I, D-II

Q. Chemiosmosis requires a

1. Membrane
2. Proton pump
3. Proton gradient
4. All of the above

Q. Match the following processes with their location of occurrence in the cell: Process Location

A.	Proton moves into	I.	Mitochondria
B.	Respiration	II.	Thylakoid membrane
C.	$C_3$ cycle	III.	Thylakoid lumen
D.	$\mathrm{PS}I$ and $\mathrm{PS}\mathrm{II}$	IV.	Stroma

1. A-III, B-I, C-IV, D-II
2. A-II, B-I, C-III, D-IV
   
3. A-IV, B-I, C-II, D-III
4. A-III, B-IV, C-I, D-II

Q. During ATP synthesis, movement of electrons occurs from

1. lumen of thylakoids to membrane of thylakoids
2. lumen of thylakoids to stroma of thylakoids
3. membrane of thylakoids to stroma of thylakoids
4. stroma of thylakoids to lumen of thylakoids

Q. Which of the following is not required for the synthesis of ATP by chemiosmosis?

1. Proton pump
2. NADPH
3. Proton gradient
4. ATP Synthase

Q. The chemiosmotic hypothesis invovles all of the following, except

1. Only proton transport is strictly regulated, other positively charged ions can diffuse freely across the mitochondrial membrane.
2. A membrane impermeable to photons.
3. Electron transport by the respiratory chain pumps proton out of the mitochondria.
4. ATPase activity is reversible.