Which of the following is the correct sequence of electron flow during the light-dependent reactions?
PSI → Electron transport chain → PSII → NADP+
PSII → Electron transport chain → PSI → NADP+
NADP+ → PSI → Electron transport chain → PSII
PSII → PSI → Electron transport chain → NADP+
Related Questions
In PS I, the reaction centre Chl a has absorption peak at ____whereas in PS II, the reaction centre Chl a has absorption maxima at ______
700 nm, 680nm
680 nm, 700 nm
400 nm , 500nm
700nm, 800 nm
During light reaction of photosynthesis
ADP is phosphorylated and NADPH oxidised
ADP is phosphorylated and NADP reduced
ADP is phosphorylated and NADPH reduced
ATP is phosphorylated and NADPH reduced
Which photosystem is involved in cyclic photophosphorylation?
PS-II
PS-I
Xanthophyll and PS-II
Xanthophyll and PS-I
The energy source that directly drives ATP synthesis during chemiosmosis is:
The electron transport chain
The potential energy stored in a proton gradient
ATP synthase
ADP
Non-cyclic phosphorylation occurs in
I. stroma lamellae
II. grana lamellae
III. chloroplast membrane
Select the correct option
Only I
II and III
I and III
Only II
The process by which ATP is produced in the inner membrane of a mitochondrion, the electron transport system transfers protons from the inner compartment to the outer, as the protons flow back to the inner compartment, the energy of their movement is used to add phosphate to ADP, forming ATP is
Chemiosmosis
Phosphorylation
Glycolysis
Fermentation
The electrons in the reaction centre of PS-I are
Energized by light
Received from PS-II
Used to split water
Transferred to oxygen
The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because
High energy bonds are formed in mitochondrial proteins
ADP is pumped out of the matrix into the intermembrane space
A proton gradient forms across the inner membrane
There is a change in the permeability of the inner mitochondrial membrane towards adenosine diphosphate (ADP)
Which molecule is synthesized in the Calvin cycle using products from the light-dependent reactions?
ATP
NADPH
Oxygen
Glucose
Plastoquinone functions in the light-dependent reactions by:
Accepting electrons from Photosystem I
Donating electrons to Photosystem I
Carrying electrons from Photosystem II to the cytochrome b6f complex
Splitting water molecules
