Question No:1

Where are the protons and O₂ formed likely to be released?

[A] Lumen of thylakoid
[B] Outside of thylakoid membrane
[C] In stroma
[D] None



Question No:2

Phosphorylation occurs in

[A] mitochondria
[B] chloroplast
[C] cytoplasm
[D] all



Question No:3

Oxidative phosphorylation occurs in

[A] mitochondria
[B] chloroplast
[C] cytoplasm
[D] all



Question No:4

Place where cyclic flaw of electrons occur:

[A] Thylakoid of grana
[B] Stroma
[C] Stroma lamellae
[D] All



Question No:5

Stroma lamellae lacks all except

[A] PSII
[B] NADP reductase
[C] PSI
[D] water splitting complex



Question No:6

Which of the following is incorrect about cyclic photo phosphorylation?

[A] Only PSI involved
[B] It occurs when only light of wavelength beyond 680 nm is available for excitation
[C] Only synthesis of ATP occurs
[D] Synthesis of NADPH + H⁺ occurs



Question No:7

What is the processes that creates proton gradient across thylakoid membrane?

[A] Splitting of water molecule on inner side of membrane (towards lumen)
[B] H⁺ carrier transport H⁺ ion from stroma to lumen
[C] NADH reductase removes H⁺ ion from stroma for reduction of NADP⁺
[D] All



Question No:8

During light reaction

[A] pH of stroma ↓ es
[B] pH of lumen ↓ es
[C] pH of lumen ↑ es
[D] pH of stroma has no effect



Question No:9

Which acts as a transmembrane channel?

[A] F₀of ATP ase
[B] F₁ of ATP ase
[C] both
[D] none



Question No:10

Chemiosmosis requires

[A] membrane
[B] proton pump
[C] proton gradient
[D] all



Question No:11

Which type of phosphorylation takes place in photosynthesis?

[A] Cyclic
[B] Non-cyclic
[C] Both (a) and (b)
[D] None of the above



Question No:12

Unidirectional flow of electrons in photo phosphorylation takes place in

[A] cyclic
[B] non-cyclic
[C] pseudo cyclic
[D] all



Question No:13

In light reaction of photosynthesis, chlorophyll is subjected to

[A] destruction
[B] permanent reduction
[C] oxidation and reduction
[D] neutralization



Question No:14

Photosynthetic pigments in chloroplast are embedded in membrane of

[A] thylakoids
[B] photo globin
[C] matrix
[D] envelope of chloroplast



Question No:15

Which of the following wavelength occurs in red part of the spectrum?

[A] 470 nm
[B] 390 nm
[C] 680 run
[D] 830 nm