14 Bacteria.docx - BACTERIA I Cells are the smallest living unit All living things are composed of cells All cells come from pre-existing cells Life

14 Bacteria.docx - BACTERIA I Cells are the smallest living...

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BACTERIA I. Cells are the smallest living unit. All living things are composed of cells. All cells come from pre-existing cells. Life from life. * There is no spontaneous generation. II. Bacteria are prokaryotic cells. A. Prokaryotes means: Before the nucleus . These cells have NO nucleus. B. 1. Cytoplasm 3. Cell membrane 5. Chromosome a. Water a. Phospholipids a. DNA (double strand) b. Salts b. Protein b. Protein c. Biological molecules 2. Cell wall 4. Ribosomes (small) 6. Slime layer a. Carbohydrates a. RNA (Capsule) b. Protein b. Proteins a. Carbohydrates 7. Flagella C. Shapes 1. Round 2. Rod 3. Spiral D. Size larger than a virus. Can be seen by a light microscope. III. Where are bacteria found ubiquitous. A. All over in the environment. They are important in the mineral cycles . B. In us and on us. There are 10x more microbes in us and on us than we have body cells . 1
What do they do? b) B

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