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NEET 2003
Exam
NEET
Year
2003
Subject
Botany
Chapter
Photosynthesis in Higher Plants

NEET 2003 · Botany · Photosynthesis in Higher Plants

Which one of the following concerns photophosphorylation?

Which one of the following concerns photophosphorylation?

Options

  1. AADP + AMP ⟶ Light energy \stackrel{\text{ Light energy }}{\longrightarrow} ATP
  2. BADP+\mathrm{ADP}+ Inorganic PO4⟶ Light energy \mathrm{PO}_4 \stackrel{\text{ Light energy }}{\longrightarrow} ATP
  3. CADP+\mathrm{ADP}+ lnorganic PO4⟶\mathrm{PO}_4 \longrightarrow ATP
  4. DAMP+\mathrm{AMP}+ lnorganic PO4⟶ Light energy \mathrm{PO}_4 \stackrel{\text{ Light energy }}{\longrightarrow} ATP

Correct answer

B. ADP+\mathrm{ADP}+ Inorganic PO4⟶ Light energy \mathrm{PO}_4 \stackrel{\text{ Light energy }}{\longrightarrow} ATP

Step-by-step solution

Photophosphorylation is the process in which ATP is produced, which is called as energy currency of the cell. During this process, ADP is phosphorylated to give ATP in presence of light energy. Related Theory During photophosphorylation, electrons move from water through PSII, intermediate chain of carriers, through PSI, and finally to NADP+\mathrm{NADP}+ causing its reduction into NADPH2. Flow of electrons through the carriers linking PSII and PSI pump protons into the thylakoid lumen.
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