2. Microorganisms are ______ ______ ______ ______. The three main types are ______, ______ and _______. very smallliving things viruses fungi bacteria

3. Because they are alive Bacteria and Fungi carry out the 7 life processes. M R S G R E N ovement espiration ensitivity rowth eproduction xcretion utrition

4. Because viruses do not need n________ they are sometimes not called alive. They are still referred to as microorganisms. utrition

5. Microorganisms that live on and eat dead things are called saprophytes. Microorganisms that live on living creatures are called parasites. If a microorganism causes a disease it is called a pathogen. Usually the disease is the result of poisonous waste __________ excreted by the microorganism. toxins