What were the isotopes used, to research about photosynthesis?

Where does photosynthesis take place in C3 plants?

Why is the productivity of C4 plants better than that of C3 plants?

Which of these take place in the first step of the Calvin pathway?

Which is the very slow-acting enzyme in chloroplast?

The electrons produced in the photolysis of water enters __

Which of these is not an external factor affecting photosynthesis?

The first electron acceptor in photosystem 1 is _____