Microorganisms : Friend and Foe Class 8 Science NCERT

Q.1. Why should we avoid standing close to a tuberculosis patient while he/she is coughing?

Q.2. Some people fear that vaccines can be dangerous as it contains microbes itself. Please discuss and remove the fear.

Q.3. What is fermentation?

Q.4. Name the preservatives used in kitchen on daily basis.

Q.5. What is the commercial use of yeast?

Q.6. Whether we should use antibiotics in cold and flu?

Q.7. What is pasteurisation?

Q.8. Why oil is used while making mango pickles?

Q.9. Name the vaccine which is used against Tuberculosis.

Q.10. What is nitrogen fixation?

Q.11. What is nitrogen cycle?

Q.12. Viruses also infect animals. Give examples.

Q.13. A disease that can spread through direct contact with infected person. Give example.

Q.14. Define pathogens. How do they enter our body?

Q.15. Which microorganism is the cause of malaria ?

Q.16 : Name few diseases caused by viruses.

Q. 17. Write name of some diseases caused by bacteria.

Q.18. Which microorganisms are unicellular ?

Q.19: Name some multicellular microorganisms.

Q.20. What are antibodies ?
. Define pathogens. How do they enter our body?

. Which microorganism is the cause of malaria ?

 Name few diseases caused by viruses.

 Write name of some diseases caused by bacteria.

 Which microorganisms are unicellular ?

: Name some multicellular microorganisms.

. What are antibodies ?