Bacteriology Study of ___________

BACTERIA!!! OMG they are everywhere

What do you know about bacteria?

Fun Facts about Bacteria 1. Bacteria help our bodies with digestion and produce needed vitamins. 2. Bacteria help us by destroying harmful organisms within our bodies. 3. There are more bacterial cells in your body than there are human cells. 4. Bacteria are used to make cheese, milk, sourdough bread & yogurt % of all bacteria are helpful. 6. Dead or weakened bacteria & viruses are used for making helpful vaccines. 7. Scientists estimate that bacteria produce nearly half the oxygen found in the atmosphere. 8. Helpful bacteria are used to purify water at sewage treatment plants and to break down oil after oil spills. 9. One healthy bacterium could reproduce into a colony of more than 2 million in just seven hours. 10. There are more microbes on your body than there are humans on the entire planet. 11. An area of skin as small as 6.5 square cm (1 square inch) may be home to more than 500,000 microbes.

Bacteria Evolution 5 Bacteria fossils have been found in rocks from the Devonian Period (416 to mya) Fossil evidence suggests that bacteria have been on Earth at least 3.5 billion years During the Proterozoic Eon (~1.5 bya) oxygen appeared in the atmosphere as a results of the action of the cyanobacteria

Where do Bacteria live? Soil Acidic Hot Springs Radioactive Waste Water Deep in the Earth's Crust Outer Space Plants & Animals 4

Classification of Bacteria 6 Domains Archae o Kingdom: Archaebacteria Bacteria o Kingdom: Eubacteria

How to study and identify A. Morphology: 1.The branch of biology dealing with the form and structure of organisms. 2.The form and structure of an organism considered as a whole. B. Cell Structures: 1. Intracellular: Inside the cell 2. Extracellular: outside the cell C. Metabolism: Gathering and using energy D. Growth and Reproduction: Multiply

Hypothesis: Sketch of Bacteria/ Human Cells Bacteria Human

Size of Bacteria

Power of ten

A. Morphology

B. Cell Structures Which organelles are you familiar with?

Extracellular 7 What are the functions of the following? Capsule: Cell Wall: Pili: Flagella: Cytoplasmic Membrane:

Intracellular 7 What are the functions of the following? Nucleoid: Ribosomes: Cytoplasm:

Different Types of Bacteria Cell Walls 3

Extracellular Structures

Bacteria Metabolism 8 What nutrients do bacteria want? C (Sugar, Lipid) => Energy, Biosynthesis N (Protein) => Biosynthesis O (Air) => Energy Bacteria Process these nutrient through: Aerobic Respiration Anaerobic Respiration Anaerobic Fermentation

C. E. coli Metabolism

Where does this take place?

Bacteria Reproduction: Many ways to make more

D. Growth and Reproduction

Reproduction Binary fission Describe what you see.....

Colony Morphology

Making bacteria work

Links 1. Virtual Museum of Bacteria: 2. Image of Bacteriology final_images/BacWork.jpg 3. Image of Gram Positive/ Gram Negative 4. Where to find bacteria 5. Bacteria Evolution olution-of-bacteria 6. Bacteria Classification 7. Intracellular Components 8. Bacteria Metabolism

How to use a Microscope 1.Start on Low Power 2.Use large focus to find the image on the slide 3.Use fine focus to make the image clearer 4.Move to Medium Power 5.Use fine focus to make the image clearer 6.Move to High Power 7.Use fine focus to make the image clearer

Human Cheek Cell 1. Use a toothpick to scrape the inside of your check to collect cheek cells. 2. Place the cells onto a microscope slide 3. Place dye on to your cheek cells 4. Cover the sample with a cover slip 5. Look at your cells under the microscope on low power & sketch 6. Look at your cells under the microscope on medium power & sketch 7. Look at your cells under the microscope on high power & sketch

Bacteria Cells