During photosynthesis, the light-dependent reactions in the chloroplast produce ATP, NADPH, and O$_2$. Of these, oxygen (O$_2$) diffuses out of the chloroplast as a byproduct. ATP and NADPH are used within the chloroplast to drive the light-independent reactions (Calvin cycle), which produce sugars.
Which of the following is responsible for the production of oxygen during photosynthesis?
A. Calvin cycle
B. Photolysis of water
C. Cyclic photophosphorylation
D. Reduction of NADP+

A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
The output (Y) of the given logic implementation is similar to the output of an/a …………. gate.
What is Microalbuminuria ?

In the above represented plasmid an alien piece of DNA is inserted at the EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?