Microorganisms – Friends or Foes (Worksheet)
1. Study of Microorganisms : __________________
2. The size of bacterium is 3.5 microns = ___________ mm = ___________ m
3. Microbes are divided into four categories:
i. _____________ ii. _____________
iii. _____________ iv. _____________
4. Viruses live on __________ line of living and non-living. They do not own _______ apparatus. They enter the body of living cell and start ___________.
5. The living cell inside which the virus grows and multiplies is known as ________.
6. Study of viruses is called ___________.





