question_answer

Direction: In the following questions, you have several brief passages with some questions following each passage. Read the passages carefully and choose the best answer to each question out of the four alternatives.

Passage - III

Experiments with the Sulphonamides have made clear a fact about germs which is gaining increasing importance in fighting, them Germs, it seems, have the same ability as all the other living things gradually to change themselves to suit new conditions. But, as the generation of germs lasts only twenty twenty-five or thirty minutes, before all the germs divide to form new ones, changes that would take many years in animals can be achieved by germs in a few hours. Perhaps, then, you give the attacking germ a dose of Sulphonmides which upsets them somewhat but is not strong enough to prevent them from multiplying if so, they very rapidly develop new powers which enable them to resist the effects of the drug. After this has happened, even the strongest dose will fail to disturb them.

One generation of germs expires, bringing into existence the next generation

A) in twenty minutes

B) in twenty five minutes

C) in not more than half an hour

D) in a few hours