NEETBotanyPhotosynthesis in Higher Plants
What is photophosphorylation?
Options
- ASynthesis of ATP from ADP and inorganic phosphate in the presence of darkness
- BSynthesis of ATP from ADP and inorganic phosphate in the presence of light
- CBreakdown of ATP to ADP and inorganic phosphate
- DConversion of light energy into thermal energy
Correct answer
B. Synthesis of ATP from ADP and inorganic phosphate in the presence of light
Step-by-step solution
: Living organisms have the capability of extracting energy from oxidisable substances and store this in the form of bond energy. Special substances like ATP, carry this energy in their chemical bonds. The process through which ATP is synthesised by cells (in mitochondria and chloroplasts) is named phosphorylation. Photophosphorylation is the synthesis of ATP from ADP and inorganic phosphate in the presence of light. When the two photosystems work in a series, first PS II and then the PS I, a process called non-cyc