Question

Mention path of electrons in the light reaction of photosynthesis.

Answer 1

Answer:

The pathway of electrons. The general features of a widely accepted mechanism for photoelectron transfer, in which two light reactions (light reaction I and light reaction II) occur during the transfer of electrons from water to carbon dioxide, were proposed by Robert Hill and Fay Bendall in 1960.

Explanation:

Answer 2

Dear Student,

◆ Path of electrons during light reaction -

• Water
• Reaction centre - P680
• Quinone
• Phaeophytin
• Plastoquinone
• Cytochrome b
• Cytochrome f
• Plastocyanin
• Reaction centre - P700
• Ferrodoxin reducing system
• Ferrodoxin
• NADPH

◆ Light reactions -

• Steps in photosynthesis which takes place in presence of sunlight are called light reactions.
• They are - photoexcitation, electron transport and photophosphorylation.

# Substrates used -

• Water
• Sunlight

# Products formed -

• Oxygen
• ATP
• NADPH

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