IUB BIOL-L 211 - Bacteria and Bacteriophage (4 pages)

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Bacteria and Bacteriophage



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Bacteria and Bacteriophage

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Bacteria and Bacteriophages DNA basics


Lecture number:
4
Pages:
4
Type:
Lecture Note
School:
Indiana University, Bloomington
Course:
Biol-L 211 - Molecular Biology
Edition:
1
Documents in this Packet

Unformatted text preview:

BIOL L 211 Lecture 4 Outline of Last Lecture I Drosophila Melanogaster II Crossing Over III Additional Points Outline of Current Lecture I Bacteria A Characteristics B Microbiome C Bacteria Research II Bacteriophage A Characteristics B Lytic Cycle C Lysogenic Cycle D Bacteriophage Research III DNA A Characteristics B Major Groove C Minor Groove D Nucleotides E Chargaff s Rules Current Lecture Bacteria and Bacteriophage I Bacteria A Characteristics 1 Prokaryotes no membrane bound organelles transcription translation occur in same location cell wall of peptidoglycan 2 Facilitate easy research in a lab due to features such as These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute a Single chromosome nucleoid b Grow fast c Easy to manipulate 3 Functions a Cycle Carbon b Produce Oxygen c Nitrogen fixation d Waste decomposition 4 May possess plasmids flagella and or capsules B Microbiome 1 Human body contains 23 000 genes 10 000 000 000 000 cells 2 Microbiome bacteria inside humans in particular in the gut 3 Sense of scale Microbiome has 3 million genes among 100 trillion bacteria 4 Probiotics Bacteria in yogurt purposely ingested to improve health 5 Applications Fecal transplants used to successfully treat clostridium difficile infections Seems very nasty but saves lives C Bacteria Research 1 Frederick Griffith 1928 performed experiments on pneumococcal bacteria a Compared two strains smooth vs rough good strain vs bad strain b Demonstrated that the heat killed bad strain could still infect and convert the healthy strain to the bad strain c The DNA of the S strain converted the R strain to the dark side d Called this the transformation principle 2 Oswald Avery 1944 showed that DNA was the source of genetic material as opposed to proteins other cell components II Bacteriophage viruses specifically the subset that infect bacteria hence bacteriophage A Characteristics 1 Unique



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