Unit 4222-265 Essay

1187 Words5 Pages
1,1 Bacteria are tiny microorganisms that are made up of just one cell that can only be seen from under a microscope. They are the smallest living cells and are only a few micromeres in length that normally exist together in millions. Bacteria come in three different shapes which are Coccus, Bacillus and Spirillum. Bacteria exist everywhere inside and outside of our bodies they are more bacterial cells then human cells. They are also found in radioactive waste, soil, plants, water ect.Some bacteria are completely harmless and help with our digestive system. The only place that bacteria aren’t found are where humans have sterilized. Some bacteria can cause diseases if they end up in the wrong part of our body. 1,1 Viruses are too small to be seen by the naked eye. They are even smaller then bacteria. They can’t multiply on their own so they have to invade a host cell and take over its machinery in order to be able to make more particles. They cannot reproduce without a host cell that’s what makes them unique organisms. Viruses consist of genetic materials (DNA OR RNA) surrounded by a protected coat of protein, liquid.Virsuses may lead to mild to severe illnesses in humans for example it can cause flu or a common cold to something more life threatening like HIV/AIDS.A virus can enter your body from a break in the skin or from inhaling it from the air we breathe in.Viruses are also immune to antibiotics. 1,1 Fungi is neither a plant nor an animal it is a member of a large group of eukaryotic organisms. This means that each of the cells contain membranes. They get their food by absorbing nutrients from their surroundings. Fungi includes rusts, truffles, molds and yeasts. Fungi are airborne so they may be inhaled as well as being picked up on the skin. They cause conditions such as nail infection, athlete’s foot and thrush. 1,1 Parasites are organisms that live
Open Document