During the light-dependent reactions, what is the primary role of photosystem II (PSII)?
To split water molecules and release electrons.
To fix carbon dioxide into organic molecules.
To generate ATP through cyclic photophosphorylation.
To produce NADPH by reducing NADP+.
Related Questions
I. Photosystem-I is a photosynthetic pigment system located on the appressed part of grana and thylakoids
II. Photosystem-II is a photosynthesis pigment located on the non-appressed part of stroma only
Identify wheather the given statements are correct or incorrect and choose the correct accordingly
Statement I is correct, while II is incorrect
Statement II is correct, while I is incorrect
Both statements are correct
Both statements are incorrect
The absorption spectrum of chlorophyll a and b shows peaks in the blue and red regions. Which statement best explains the green color of leaves?
Green light is preferentially absorbed by chlorophyll.
Green light is converted to heat energy within the leaf.
Green light is primarily reflected and transmitted, not absorbed.
Chlorophyll does not interact with green light.
The two pigment system theory of photosynthesis was proposed by
Blackman
Hill
Emerson
Arnon
Photosystem II
Is involved only in cyclic photophosphorylation
Is attached to Oxygen evolving complex
Has a reaction center which absorbs the 600nm light
Is not present in cyanobacteria
Phytochrome plays a crucial role in:
photoperiodism
photosynthesis
respiration
transpiration
Which of the following statements regarding cell division is incorrect?
Mitosis produces genetically different daughter cells.
Meiosis is involved in sexual reproduction.
Cell division is essential for growth and repair in multicellular organisms.
Meiosis produces four daughter cells.
Oxygen is not produced during photosynthesis by
Chara
Green sulphur bacteria
Cyca
Nostoc
I. Cyclic photophosphorylation needs PS-I and PS-II
II. Cyclic photophosphorylation produced NADPH + H^+ and ATP
III. Cyclic photophosphorylation involves
IV. Electrons are recycled in cyclic photophosphorylation
Identify the correct and incorrect statement and select the option accordingly
I, II and III are incorrect, IV in correct
I, II and IV are incorrect, III is correct
I, II and III are incorrect, II in correct
IV, III and Ii are incorrect, I in correct
Which activity is performed by PS-I in light reaction?
Reduction of NADPH
Reduction of
Oxidation of
Oxidation of NAD
In grana of chloroplast, the reaction during day shows
Oxidative phosphorylation
Photophosphorylation
Substrate level phosphorylation
Dephosphorylation
