First virus was discovered by:
A.Landsteiner
B.Miller
C.Ivanowsky
D.Beijerinck
Category: Viruses Mcqs
Which of the following is an interesting feature of viruses:
A.That they occur only inside the bacteria
B.That they behave as plants
C.That they multiply only inside the cytoplasm of host cell
D.That they are made up of proteins only
The enzymes helping a virus to penetrate into host cell by dissolving its wall is:
A.Nuclease
B.Cellulase
C.Neuroaminidiase
D.Phosphorylase
Nucleoproteins and histones are present in:
A.Bacteria
B.Viruses
C.Both (a) and (b)
D.None of these
Protein molecules forming capsid in a virus are called:
A.Capsomeres
B.Macromeres
C.Chromomeres
D.None of these
A collar-like structure between head and tail as well as an end plate is present in:
A.Bacteria
B.Bacteriophage viruses
C.All viruses other than bacteriophages
D.None of these
