Q.1: Microorganisms are classified into ____ groups.
a) 5
b) 4
c) 2
Q.2: All microorganisms are single-celled.
a) True
b) False
Q.3: ___________ bacterium promotes the formation of curd.
a) Rhizobium
b) Lactobacillius
c) Yeast
Q.4: Microorganism like _________ only reproduce inside the cells of the host organism.
a) Virus
b) Fungi
c) Bacteria
Q.5: Which of the following disease is caused by protozoa ?
a) malaria
b) typhoid
c) polio
Q.6: Which of the following microorganism lives in colonies ?
a) bacteria
b) fungi
c) both
Q.7: The process of conversion of sugar into alcohol by adding yeast is called ______________.
a) pasteurisation
b) sedimentation
c) fermentation
Q.8: __________________ discovered the vaccine for small pox in 1798.
a) Edward Jenner
b) Louis Pateur
c) Alexander Fleming
Q.9: Yeast reproduces rapidly and produces __________ gas during respiration.
a) carbon dioxide
b) oxygen
c) hydrogen
Q.10: The medicines which kill or stop the growth of disease causing microbes are called ____________.
a) Vaccines
b) Antibiotics
c) None
Q.11: Some microbes can fix the nitrogen from the atmosphere to enrich the soil’s fertility. They are known as ____________________.
a) Biological nitrogen fixers
b) Nitrogen spreaders
c) Nitrogen producers
Q.12: Microbial diseases that can spread from an infected person to a healthy person through water, air, food or physical contact, are known as ___________ diseases.
a) communicable
b) non-communicable
c) none
Q.13: Why antibiotics are not effective against cold and flu ?
a) Because these are caused by bacteria.
b) Because these are caused by protozoa.
c) Because these are caused by virus.
Q.14: When a disease carrying microbe enters our body, the body produces _________ to fight the invader.
a) antibodies
b) antigens
c) none
Q.15: __________ mosquito carries the parasite of malaria.
a) Aedes
b) Anopheles
c) Both
Q.16: Disease causing microbes are called ___________.
a) harmless
b) pathogen
c) non-pathogen
Q.17: In pasteurization method, the milk is heated at ______ o C for 15 to 30 seconds and then suddenly cooled down.
a) 40
b) 90
c) 70
Q.18: _______________ discovered the Bacillus anthracis which causes anthrax disease.
a) Alexander Fleming
b) Robert Koch
c) Edward Jenner
Q.19: Which of these things you have to keep in mind while taking antibiotics ?
i) It should be prescribed by a qualified doctor.
ii) It should be costly.
iii) The patient should complete the course of antibiotics prescribed by the doctor.
a) Only iii
b) i and ii
c) i and iii
Q.20: Yeast can be grown on natural sugars present in grains like _____________.
a) wheat and barley
b) rice and wheat
c) both
Answers:
- b
- b
- b
- a
- a
- c
- c
- a
- a
- b
- a
- a
- c
- a
- b
- b
- c
- b
- c
- c
Your questionnaires are really interesting and well-thought ones. These help me revisit what I had learnt long back.
LikeLiked by 1 person
Thank you 🙏🙂
LikeLiked by 1 person