1. What is Microbiology?
a) Study of molecules that are visible to human eyes
b) Study of animals and their family
c) Study of organisms that are not visible to naked eyes
d) Study of microscope
View Answer
Answer: c
Explanation: Study of organisms that are not visible to naked eyes is known as Microbiology. A special device known as a microscope is required to view these organisms. Example: Bacteria, viruses, fungi, etc.
2. Who is known as the father of Microbiology?
a) Edwin John Butler
b) Ferdinand Cohn
c) Robert Koch
d) Antoni van Leeuwenhoek
View Answer
Answer: d
Explanation: Antoni van Leeuwenhoek, a Delft cloth merchant, is considered the father of microbiology. He discovered the invisible world of microorganisms using homemade microscopes.
3. Which microorganism(s) among the following perform photosynthesis by utilizing light?
a) Cyanobacteria, Fungi and Viruses
b) Viruses
c) Cyanobacteria
d) Fungi
View Answer
Answer: c
Explanation: Cyanobacteria require light as a source of energy to perform photosynthesis. Fungi and viruses are unable to perform photosynthesis and are heterotrophic.
4. Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?
a) Condenser lens
b) Magnifying lens
c) Objective lens
d) Eyepiece lens
View Answer
Answer: a
Explanation: Compound microscope contains three separate lens systems. The condenser lens is placed between the light source and the specimen and it gathers and focuses the light rays in the plane of the microscopic field to view the specimen.
5. Which of the following are produced by microorganisms?
a) Alcoholic beverages
b) Fermented dairy products
c) Breads
d) All of the mentioned
View Answer
Answer: d
Explanation: Microorganisms are used in many industries for the production of food we eat, like fermented dairy products (sour cream, yogurt), as well as fermented foods as pickles, breads and alcoholic beverages.