Photochemical Phase of Photosynthesis

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Photochemical Phase of Photosynthesis: Overview

This topic covers concepts such as The Light Harvesting Complex, ATP Synthase, Absorption Spectrum, Action Spectrum, Red Drop Effect, Photosynthetic Unit, Photosystem I, Photosystem II, Reaction Centre, Light Reaction, etc.

Important Questions on Photochemical Phase of Photosynthesis

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Through the use of oxygen-18 (heavy oxygen), scientists have found that the oxygen released during photosynthesis comes from molecules of:

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Which one of the following categories of organisms do not evolve oxygen during photosynthesis?

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Three cellular processes are listed below, Choose the CORRECT combination of processes that involve proton gradient across the membrane.
i Photosynthesis
ii Aerobic respiration
iii Anaerobic respiration

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The products of light reaction during photosynthesis include:

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Non-cyclic photophosphorylation does NOT occur in _______.

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In carbon dioxide reduction, ATP is

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Proton motive force is created by pumping protons across the

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In green leaves, the light and dark reactions occur in

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The enzymes required for synthesis of ATP are located on _____.

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Two independent experiments related to photosynthesis were conducted, one with O18-labelled water (experiment P) and the other C14-labelled CO2 (experiment Q). Which one of the following options lists the first labelled products in experiments P and Q, respectively?

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Which of the following is/are the product(s) of cyclic photophosphorylation?

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In cyclic photophosphorylation, electron passes from primary electron acceptor to

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Photophosphorylation is the process of utilising light energy from photosynthesis to convert

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First reaction in electron transport of Photosynthesis

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Identify the wrong statements with respect to ATP synthesis in Chloroplast based on Chemiosmotic hypothesis

A) Proton gradient across the thylakoid membrane increases due to Quinone cycle
B) The movement of protons through F0 leads to decreased pH in stroma of Chloroplast
C) Breakdown of proton gradient is a cause for release of energy
D) Splitting of water molecules produce protons in stroma of chloroplasts

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The ratio of NADP,  H2O and electrons required to evolve 4O2 molecules through photophosphorylation are

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Functions of lamellae of grana and stroma lamellae of chloroplast during photophosphorylation is

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Oxygen evolving complex which is responsible for oxygen evolution during photosynthetic. light reactions is physically associated with

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First reaction in electron transport of Photosynthesis