Lai Chi Waa
Abstract
Microbiology is the study of microorganisms (also known as microbes), which are unicellular or cell-cluster organisms and infectious agents too small to be seen with the naked eye. This includes eukaryotes (organisms with a nucleus), such as fungi and protests, and prokaryotes (organisms without a nucleus), such as bacteria. Microorganisms are extremely important in our everyday lives. Some are responsible for a significant proportion of the diseases affecting not only humans, but also plants and animals, while others are vitally important in the maintenance and modification of our environment.