How many amino acids are present in human insulin?

Which human hormone was the first to be produced using recombinant $DNA$ technology?

First biochemical to be produced commercially by microbial cloning and genetic engineering is:

What is produced by genetically engineered bacteria?

Which of the following is a correct statement with respect to animal insulin?

$P -$ Methods capable of early diagnosis
$Q -$ Methods not capable of early diagnosis
$I - rDNA$ technology $\quad II -$ Serum analysis $\quad III - PCR$
$IV -$ Urine analysis $\quad V - ELISA$
Select the correct option for $P$ and $Q$.
$P\quad\quad Q$