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Bacteria and Blue Green Bacteria
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The Mandella Environment

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Aim: How do we know that bacteria cause disease?

Do Now: Students will complete a ten minute activity comparing a bacterial cell to an animal cell by completing a checklist on a handout.

Procedure: Period 6 needs to complete their harmless and beneficial effects of bacteria during their first period.  Ask students to create a chart with two columns, Harmful and Beneficial Effects of Bacteria. Using the text have them list at least five effects of each and then discuss the harmful effects and the beneficial effects of bacteria. Harmful: Causes diseases like TB, Strep, Meningitis, Botulism, Pneumonia, Gonnorhea, Fire blight,  Spoil food, Pollute water. Helpful effects: Decomposers, Used to produce food and drugs.

Ask students the Aim question and have them give some of their ideas. Then explain Koch's Postulates: Robert Koch, german scientist set out in 1876 to show that anthrax came from a bacteria and caused disease. There are steps to his experiment which are called Koch's postulates.  1. Organism must be present in a living thing when the disease occurs.  2. The organism must be taken from the host and grown in the laboratory.  3. When the organism from the lab is injected into the healthy hosts, they must cause the same disease in the healthy hosts.  4. The organism must be removed from the new hosts, grown in the lab, and show the same disease as the organism from the first host.    This is still used today. Some of these diseases caused by bacteria are communicable. Communicable means that they can be passed from one organism to another. They are spread by: coughing, sneezing, food, clothes, silverware, toothbrushes, drinking water, sexual contact, and insects.  Complete the UPCO Book questions on Pages 251 and 252 Beneficial and Harmful Bacteria.

Homework #4: Complete the Moneran Kingdom Study Guide worksheet: Q. 1-6

Tuesday: B Day

Aim: How are blue-green bacteria different from other bacteria?

Do Now: Take a Glencoe text to your desk. Page 87 discusses traits of blue-green bacteria. write down two facts.

Procedure: Students will share their findings and we will compose some notes about blue-green bacteria.  Contain chlorophyll (green) and phycocyanin (blue) which give it it's color or pigment. They have no nucleus and were not properly classified for many years. Some blue-green bacteria may appear red, brown, black or purple.  They are found in rivers, lakes, moist soils, your swimming pools, leaky faucets. Some can live in salt water and in snow. They are unicelluar and appear in colonies.  Usually in chains. Some have jelly like layers that helps them to stick together and others have gas bubbles that help them to float to surface of water to get sunlight. They produce O from making their own food, they provide other organisms a food source and they recycle nitrogen. In large numbers they have a terrible odor. Can kill all the organisms a pond if numbers are large. Use the video disc player to show students various pictures of blue green bacteria. Complete teh enrichment activity of completing a table comparing viruses, blue green bacteria and bacteria.

Homework #5: Complete study guide worksheet: Q 10-15

Wednesday: A Day

Aim: To reveiw for our exam and to complete a mini lab: What makes yogurt?

Do Now: Display five different kinds of food items and ask the students to write down a description of the methods used to control bacterial growth. Cereal, milk, raisins, a can of soup, a box of frozen vegetables.

Procedure: Complete the Testing Yourself: Using Words on page 90 of Gelncoe Text.  Write the word and the definition. Students will take thinned yogurt, add some methylene blue stain and try to see the bacillus bacterium under the microscope. Play a review game: Pathogen Bee: Students will have to answer the question that comes up from the index review cards.

Homework #6: Complete study guide worksheet: Q. 7-9

Thursday: B Day

Aim: To continue our review of chapter four.

Do Now: Read the technology box on the top of page 86 of the Glencoe text and list three additional ways that bacteria are helpful to humans.

Procedure: Students must complete chpater reivew packets during their first period and then they will participate in a reveiw game furing the second period. Students will play Jeopardy to review for their test tomorrow.  Students will also complete the vocabulary word search and definition sheet.

Homework: STUDY for your test tomorrow.

Friday: A Day

Aim: To evaluate our knowledge of viruses, bacteria and blue-green bacteria

Do Now: Get ready for test. Clear desk and have a pen out.

Procedure: Students will take their chapter four exam.

No Homework! Have a great weekend!

Have a SUCCESSFUL 2nd Marking Period!

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