Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1....
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Transcript of Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1....
![Page 1: Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1. Asexually 2. Sexually.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b7a7f8b9ab0599b8969/html5/thumbnails/1.jpg)
Bacterial Reproduction
![Page 2: Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1. Asexually 2. Sexually.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b7a7f8b9ab0599b8969/html5/thumbnails/2.jpg)
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IntroductionBacteria can reproduce in one of two ways:
1. Asexually2.Sexually
![Page 3: Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1. Asexually 2. Sexually.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b7a7f8b9ab0599b8969/html5/thumbnails/3.jpg)
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Asexual ReproductionBinary Fission: one parent involved offspring are identical to parent & each other
Advantages:1. simple: only 1 parent2. offspring are fully formed (no maturation needed)3. very fast (20 min. in ideal conditions) after 24 hrs:
1 bacterium 2x106 kg of cells (enough to cover the earth)
![Page 4: Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1. Asexually 2. Sexually.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b7a7f8b9ab0599b8969/html5/thumbnails/4.jpg)
Asexual Reproduction
Disadvantages:• no genetic variety• one unfavourable environmental condition can wipe out
whole population
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Asexual ReproductionBinary Fission:
![Page 6: Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1. Asexually 2. Sexually.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b7a7f8b9ab0599b8969/html5/thumbnails/6.jpg)
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Asexual Reproduction
Binary Fission:
Ecoli.mov
![Page 7: Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1. Asexually 2. Sexually.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b7a7f8b9ab0599b8969/html5/thumbnails/7.jpg)
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Sexual Reproduction two parents involved offspring are genetically different
to parents & to each otherAdvantages:
genetic variety i.e. some are able to adapt to unfavourable conditions (ex: antibiotic resistance)
Disadvantages:1.more complex: slower because must find a
compatible partner
2.no new individuals produced (i.e. no increase in population)
![Page 8: Bacterial Reproduction. 2/22/20162 Introduction Bacteria can reproduce in one of two ways: 1. Asexually 2. Sexually.](https://reader035.fdocuments.us/reader035/viewer/2022062600/5a4d1b7a7f8b9ab0599b8969/html5/thumbnails/8.jpg)
Bacterial Conjugation
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• plasmid copies itself• passes through pili (cytoplasmic bridge) into recipient cell
•cells separate with both cells containing the plasmid
plasmid
donor recipient cell (+) cell ( - )
pili
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Homework Page 112 # 4, 5, 7
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Bacterial Conjugation
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