A virus is infectious object that depends on living organisms’ cells to multiply. They are bad for living organisms and take over cells. Viruses infect a body and travel to a cell and inject it’s DNA code into the cell which will make the virus multiply and will destroy the cell. This is how viruses make us sick. There are many ways viruses can spread. One way is to touch a surface that someone with the virus may have touched. Another way is that a person with the virus may have sneezed near where you are standing. A very simple way is to wash your hands. When you wash your hands, the soap and water will wash the viruses off of your hands and down the drain. It is important to wash your hands for 20 seconds so that the soap and water have time to have your hands free of viruses.
Bacteria are single-celled organisms or living things. They are also called microorganisms. They are called this because microorganisms are living things that can not be seen with the naked eye. Bacteria can be good for you or bad for you. We are going to learn about the good and bad about bacteria. Bacteria can help us in different ways. Some help us digest the food that we eat! They live inside of our digestive tract and help absorb the nutrients from what we eat. Some bacteria also turn milk into cheese or yogurt by breaking it down. Bacteria are decomposers which means they can break down plant and animal waste to make fertile soil for growing. Some bacteria can make us sick. Bacteria can contaminate water and cause diseases like Cholera. Bacteria can also enter through paper cuts to make you sick with a bacterial infection. Scientists have luckily developed a way to fight off these bacterial bugs using antibiotics.