Read the following passage and answer the questions that are given below:
One day in 1928. Dr. Fleming was working in
his laboratory an London. He was growing the germs of a disease on some glass plates
in order to study them. He suddenly noticed a small mould growing in one of the
Plates. He removed the mould carefully and looked at it through his microscope.
He saw that the germs round the mould had died. He studied the mould more
closely. He found that the mould contained some substance that could kill the
germs. He did not precisely know what this substance was, but he gave it a
name. He called it Penicilin.
Dr. Fleming’s discovery remained unknown to
the world until 1940. In that year, an Australian scientist named Dr. H. W.
Florey began to study it carefully. He worked hard for a long time and successfully
separated Penicillin from the mould, He then carried out experiments to find
out whether it could be safely used as a medicine.
(a) Answer the following questions:
(i) What did Dr. Fleming notice on one of the
plates?
(ii) What instrument did Dr. Fleming use to
look at the mould?
(iii) Who was Dr. Flory?
(b) Use the verb form of ‘discovery’ in a
sentence of your own.
(c) Of the four statements given below, only
two are true,
Write out the true statements.
(i) Dr. Florey invented penicillin.
(ii) Dr. Florey was successful in separating
penicillin from the mould.
(ii) Dr. Fleming did not at first know what
the germ killing Substance was.
(iv) Dr. Fleming’s laboratory was in
Australia.
