Penicillin was discovered by - Vidyadip

MCQ

Penicillin was discovered by

A
Waksman
B
Dubois
C
Robert Koch
✓
A. Fleming

✓

Answer

Correct option: D.

A. Fleming

d

(d) Alexander Flemming ($1929$) discovered the antibiotic penicillin and showed its effectiveness against many disease producing bacteria.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (0.5 Marks)" from STD 12 - 8. microbes in human welfare→STD 12 - 8. microbes in human welfare — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Which of the following is the correct match about the female external genitalia and their functions?

How many countries pledged their commitment to achieve by $2010$, a significant reduction in the current rate of biodiversity loss at global, regional and local levels in the World Summit held in $2002$?

Which of the following fungus producescyclosporin A which is used as an immunospuppressive agent in organ - transplant patients ?

From the statements given below choose the option that are true for a typical female gametophyte of a flowering plant:

It is 8-nucleate and 7-celled at maturity.
It is free-nuclear during the development.
It is situated inside the integument but outside the nucellus.
It has an egg apparatus situated at the chalazal end.

The role of placenta is

More than $25\; \%$ of the drugs are derived from the plants. What benefits does this described?

Which of the following is not a biotic component

When a cross is made between two parents with respect to a single character, it is called as:

A family has five girls and no son.Probability of son as the 6th child will be:

Changes in $GnRH$ pulse frequency in femail is controlled by circulating levels of