Chloramphenicol and erythromycin $(broad spectrum antibiotics) $ are produced by

Torulopsis utilis is

Bt toxins are initially inactive protoxins but after ingestion by the insects their inactive toxin becomes active due to the

Which of the following companies started selling humulin in $1983$ ?

Waksman got Nobel Prize for the discovery of

Lal Bahadur Shastri biotechnological centre is in