Overview
Identify some micro-organisms present in air and water. State the characteristics (colour, the pattern of growth, appearance, etc.) of colonies of micro-organisms. Identify micro-organisms that can be found on and inside human bodies e.g. under the fingernail, mouth cavity and expired air. Describe the effects (beneficial and harmful) of micro-organisms on the human body
What you'll learn
- Micro-organisms in air and water:
- (i) group of micro-organisms: bacteria, viruses, some algae, protozoa and some fungi (ii) concept of culturing
- Identification of micro-organisms in: (i) air (ii) pond water (iii) river (iv) stream
- 3. Micro-organisms in our bodies and food: Ways in which and places through which micro-organisms enter our bodies
- Carriers of micro-organisms
- Examples of carriers of microorganisms
- Location of micro-organisms in carriers
- Types of microorganisms