Question

Consider an experiment, where thylakoids are removed and kept in a culture medium. The medium is supplemented with all the requisites of photosynthesis, i.e. \[\ce{CO2}\], \[\ce{H2O}\]. The setup is exposed to light. Hexose sugar is not formed as the end product. 

Choose the option that justifies the above result. 

Options

• Fixation of oxygen does not take place

• Pigments systems are not linked

• Enzymes required for the biochemical phase are not available 

• Non-formation of assimilatory power

Answer 1

Enzymes required for the biochemical phase are not available 

Explanation:

Sugars are created during the photochemical phase of photosynthesis. In the matrix or stroma, all the enzymes needed for the biochemical phase are present. Because there are no enzymes present when thylakoids are isolated, sugars cannot be synthesised.