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प्रश्न
What are micro-organisms?
उत्तर
Living organisms which are not visible to the naked eye are known as micro-organisms. They are living organisms that can be seen only with a microscope or a magnifying glass. Microorganisms were observed for the first time by Anton von Leeuwenhoek in 1674, using a microscope of his own.
संबंधित प्रश्न
Alcohol is produced with the help of _________.
Carrier of malaria-causing protozoan is ___________.
The most common carrier of communicable diseases is ___________.
Can microorganisms be seen with the naked eye? If not, how can they be seen?
Who am I?
I reproduce mainly by cell division.
Complete the following conceptual picture:
Microorganisms are measured in _______.
Match the names of scientists given in Column A with the discovery made by them given in Column B.
| Column A | Column B |
| (a) Louis Pasteur | (i) Penicillin |
| (b) Robert Koch | (ii) anthrax bacterium |
| (c) Edward Jenner | (iii) Fermentation |
| (d) Alexander Fleming | (iv) small pox vaccine |
| (v) Typhoid |
The major constituent of vinegar is ______.
Name the scientist who first discovered the penicillin antibiotic. Can you name any other known antibiotic?
