Question 1

Rhizobium found in root nodules of leguminous roots is an

Accepted Answer

A) Atmospheric Carbon fixer 
B) Atmospheric Oxygen fixer 
C) Atmospheric Nitrogen fixer 
D) All of the above 
A) Atmospheric Carbon fixer 
B) Atmospheric Oxygen fixer 
C) Atmospheric Nitrogen fixer 
D) All of the above C

Question 2

Lactobacillus is commonly found in

Accepted Answer

A) Cake 
B) Curd 
C) Bread 
D) All of the above 
A) Cake 
B) Curd 
C) Bread 
D) All of the above B

Question 3

Diseases like polio and chicken pox are caused by _______

Accepted Answer

A) Bacteria 
B) Fungi 
C) Virus 
D) Worms 
A) Bacteria 
B) Fungi 
C) Virus 
D) Worms B

Question 4

Some medicines obtained from micro-organisms are applied to kill or stop the growth of disease-causing microorganisms. Such medicines are called ______.

Accepted Answer

A) Antibodies 
B) Antibiotics 
C) Antiseptics 
D) All of the above 
A) Antibodies 
B) Antibiotics 
C) Antiseptics 
D) All of the above

Question 5

Deliberately injecting weak microbes into a healthy body and producing antibodies to fight against strong microbes is called _______

Accepted Answer

A) Medication 
B) Antibiotics 
C) Vaccination 
D) All of the above 
A) Medication 
B) Antibiotics 
C) Vaccination 
D) All of the above

Question 6

Examples of Multicellular Microorganism are

Accepted Answer

A) Algae, Bacteria 
B) Bacteria and Fungi 
C) Bacteria and Viruses 
D) Algae and Fungi 
A) Algae, Bacteria 
B) Bacteria and Fungi 
C) Bacteria and Viruses 
D) Algae and Fungi

Question 7

The pores in the bread is due to gas bubbles of

Accepted Answer

A) Oxygen 
B) Nitrogen di oxide 
C) Nitrogen 
D) Carbon di oxide 
A) Oxygen 
B) Nitrogen di oxide 
C) Nitrogen 
D) Carbon di oxide

Question 8

A common preservative used in jam and pickles is

Accepted Answer

A) Sodium benzoate 
B) Nitric acid 
C) Sodium Chloride 
D) Copper Sulphate 
A) Sodium benzoate 
B) Nitric acid 
C) Sodium Chloride 
D) Copper Sulphate

Question 9

The process of conversion of sugar into alcohol by yeast is called

Accepted Answer

A) Fermentation 
B) Pasteurisation 
C) Alcoholism 
D) All of the above 
A) Fermentation 
B) Pasteurisation 
C) Alcoholism 
D) All of the above

Question 10

The microbe for Malaria is carried by

Accepted Answer

A) Male Anopheles mosquito 
B) Female Anopheles Mosquito 
C) Male Aedes mosquito 
D) Female Aedes mosquito 
A) Male Anopheles mosquito 
B) Female Anopheles Mosquito 
C) Male Aedes mosquito 
D) Female Aedes mosquito

Exam 1: Microorganisms and Their Applications