Bacteria multiply mainly by

(A) : Bubonic plague is basically a blood disease. (R): The bacteria multiply in the blood stream and localize in the lymph nodes.

Viruses that infect bacteria, multiply and cause their lysis, are called

Viruses that infect bacteria, multiply and cause their lysis are called

Viruses which infect bacteria, multiply and cause their lysis are

Viruses that infect bacteria, multiply and cause their lysis, are called

Viruses that infect bacteria, multiply and cause their lysis, are called

Bacteria multiply at the rate proportional to the number of bacteria present.If the original number N doubles in 3 hours,show that the number will be 4N in 6 hours.