Question

applies and be cautious about harmful microorganisms in daily life​

Answer 1

Answer:

bacteria

disease

fungi

infect

protist

virus

Bacterium is singular and bacteria is plural.

The prefix 'micro' comes from the Greek word mikros meaning small. How many words can you think of which contain the prefix micro? What do they all have in common?

Microorganisms are extremely small living organisms. People did not even know they existed until the invention of microscopes in the 1600s! We say that we cannot see microorganisms with the 'naked eye'. We have to view them under a microscope.

Answer 2

A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism. ... In bacteria, the cell wall is composed of peptidoglycan