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Bacteria Lecture ! Might as well learn about em , because you dirty kids are covered in them!

Bacteria Lecture ! Might as well learn about em , because you dirty kids are covered in them!. What you have to be able to do. Describe the size of bacteria Describe where we find bacteria Describe a couple different types of bacteria Compare a virus to a bacteria

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Bacteria Lecture ! Might as well learn about em , because you dirty kids are covered in them!

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  1. Bacteria Lecture!Might as well learn about em, because you dirty kids are covered in them!

  2. What you have to be able to do • Describe the size of bacteria • Describe where we find bacteria • Describe a couple different types of bacteria • Compare a virus to a bacteria • Compare bacteria to eukaryota

  3. Quick note • Most bacteria are not harmful to humans!

  4. Bacteria = prokaryotes • Prokaryote  Before nucleus! • Tiny! 1000x smaller than one of your cells • Abundant in air water soil, your notebook, Logan’s phone, Sam’s locker http://www.youtube.com/watch?feature=endscreen&NR=1&v=JAqW4OTFB4M

  5. Organization of a bacteria* • Most have cell wall surrounding membrane • Glycocalyx surrounds cell wall (it’s a polysaccharide • Capsule vs slime layer • Fimbrae

  6. Binary Fission • Technically different than mitosis • Same result!

  7. Conjugation • Bacteria link via a sex/ conjugation pilus • DNA passes through pilus

  8. Transformation • Prokaryotes pick up DNA in the environment

  9. Bacteria types • Gram positive – have peptidoglycan layer penicillin works against PG layer • Gram negative - no peptidoglycan layer

  10. Bacteria Types • Spirilum • Bacilli • Coccus

  11. Biochem • Some live only without oxygen obligate anaerobes • Tetanus botulism, • Facultative anaerobes

  12. Autotrophic or heterotrophic • Some make their food • Some do not

  13. Some videos!

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