Penicillin was first discovered from ___

Who proved that viruses are crystalline like structures?

Viruses that infect plants have ____

Which among the following don’t contain nuclear membrane?

Viruses in animals contain both RNA and DNA.

Which among the following is a major disadvantage of the Linnaeus and Aristotle’s classification?

Who discovered Penicillin and when?

Mushroom consists of stem, cap and spores at the bottom of the cap.