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Microbiology S1

Test 1

QuestionAnswer
Who invented the simple microscope? Leeuwenhoek
Who invented the compound microscope? Hook
Who found the cause of the Potato Blight of Ireland and what was it? Berkeley, fungus: Phytophthora infestans
Who found a solution to the childbirth fever deaths and what was it? Semmelweiss, wash hands with lye between babies
Who is responsible for the use of aseptic techniques for surgery and what did he use and how is it used today? Lister, carbolic acid (phenol), phenol coefficient
Who discovered the tobacco mosaic virus? Ivanovski
What is Koch known for? Koch's postulate, TB & anthrax
Describe Koch's postulate Microbe present in every case of the disease & absent in healthy hosts. Isolate microbe in pure culture. Same disease produced in healthy hosts. Same microbes isolated from new hosts.
What are some limitations of Koch's postulate? Some orgs cannot be grown in pure culture. Some only grow in people and human testing is unethical.
What type of genetic material do Prokaryotes & Eukaryotes have &where is it located? Where is extra chromosomal DNA located? Prok-chrom circular, nucleoid, in plasmids; Euk-chrom pairs, nucleus, in mitochondria & plasmids
Who has histones? P or E Eukaryotes
How many ribosomes does a Prok & Euk have? 70S, 80S in cytoplasm & on ER (70S in mitochondria)
Where does respiration occur for Prok & Euk? at cell membrane, mitochondria
What is the cell wall of a Prok composed of? Peptidoglycans, LPS, teichoic acid
What types of external layers are present on a Prok? capsule or slime layer
Who has cilia? P or E Eukaryotes (locomotion)
Who has pili? P or E Prokaryotes (conjucation)
Who has flagella? P or E Prok and Euk (locomotion)
What type of reproduction do P and E undergo? What type of cell division? Prok-asexual, binary fission; Euk-sexual or asexual, mitosis or meiosis
What are the different types of microbes? How do we classify each? What might they include? Prokaryotes-Bacteria & Archae, B-blue green algae A-extremophiles; Eukaryotes-Protozoa (motility) & Fungi (morph, reprod)& Algae (color); Non-cellular-viruses, sub-viral entities (viroids & prions)
Created by: monchichi521
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