1. ARE YOU GOOD OR BAD? Harmful and beneficial bacteria

2. Microorganisms  Microorganisms are living things that are too small to see without a microscope.  Most microorganisms are single-celled  Bacteria, some yeasts, some algae, some molds/fungi, and protists are examples of microorganisms.

3. FOOD!!!!!  Bacteria: Soft cheeses, sour cream, buttermilk, yogurt, vinegar/pickled foods, honey  Fungi: blue cheese( penicillin), mushrooms  Algae: ice cream, salad dressing, food coloring  Yeast: bread and other dough things

4. Beneficial  Baking yeast- helps bread rise  Bacteria in milk- makes milk curdle to give buttermilk, cheese, and yogurt  Bacteria in intestines- help in digestion  Mold for medicine  Bacteria in soil

5. Harmful  Bacteria in spoiled food  Bacteria in drinking water  Bacteria in sewage  Bacteria can also cause pneumonia, tetanus, and typhoid fever  All of these make people and animals sick  Fungi like ringworm, athlete’s foot

6.  Are there any foods that will make you sick if not properly handled?  How can we prevent other harmful bacteria?

7.  1. Which ones are single-celled organisms?  A. goldfish  B. seaweed  C. bacteria  D. ants

8.  2. Which of these is NOT made of cells?  A. a rock  B. a piece of wood  C. an earthworm  D. a fern

9.  3. Which parts are only in a plant cell?  A. Chloroplast  B. Cell membrane  C. Cell Wall  D. Cytoplasm

10.  4. Which statement is TRUE?  A. All diseases are caused by bacteria.  B. People use bacteria to make certain foods.  C. All bacteria cause diseases.  D. Bacteria make their own food.

11.  5. Which part of a cell directs most of the cell’s activities?

12.  6. Which statement is TRUE?  A. All microorganisms are helpful  B. All microorganisms are harmful  C. All microorganisms are single-celled  D. All microorganisms are need a microscope to be seen.

13.  7. What kind of microorganism helps turn milk into yogurt?

14.  8.