Which of the following discoveries resulted in a Nobel Prize?

The solution of $x dx + y dy = x^2 y dy - x y^2 dx$ is

The end correction for the vibrations of air column in a tube of circular cross-section will be more if the tube is

Assertion : Replication and transcription occur in the nucleus but translation takes place in the cytoplasm.
Reason : $mRNA$ is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

If $a$ and $b$ are odd integers,then the roots of the equation $2ax^2 + (2a + b)x + b = 0, a \ne 0,$ will be

Which of the following structures contains its own $DNA$?