Question

what do you mean by photophosphorlation ? Describe the phase of photosynthesis during which photo phosphorylationoccur in chloroplast long question

Answer 1

$\bold{PHOTOPHOSPHORYLATION}$

Use of electron to convert ADP(Adenosine diphosphate ) into other usefull compound ATP(Adenosine triposhphate) in presence of light(photons) is called photophosphorylation.

$\bold{Photophosphorylation \: occurs \: during \: the \: light }$$\bold{dependent \:phase \: of \: photosynthesis }$

▶This reacruon takes place in thylakoids of chloroplast.

▶In this :--

✳Chlorophyll becomes active when comes in contact with light energy (by absorbing photons)

✳The energy absorbed is further utilised in splitting of water into two compounds, Hydrogen and oxygen and this conversion is called photolysis.

$2H_2O \xrightarrow{photons} 4H^{+} + 4e^{-} + O_2$

▶The hydrogen formed as product during photolysis is utilised by NADP to form NADPH.

$NADP + e^{-} + H^{+}\xrightarrow{photons} NADPH$

▶Oxygen formed is given out.

▶ADP is converted to ATP by photophosphorylation.

Answer 2

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