Bio 150 exam 1 || QUESTIONS WITH 100% SOLVED ANSWERS!!!
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Course
Bio 150
Institution
Bio 150
Identify contributions each made to microbiology correct answers Robert hooke- Seen 25x magnification under a microscope and published the book called micrographia, in which he published these findings. He looked at a slice of cork that looked like little boxes.
Antonv van leeuwenhoek-Father of ...
Bio 150 exam 1 || QUESTIONS WITH 100% SOLVED
ANSWERS!!!
Identify contributions each made to microbiology correct answers Robert hooke- Seen 25x
magnification under a microscope and published the book called micrographia, in which he
published these findings. He looked at a slice of cork that looked like little boxes.
Antonv van leeuwenhoek-Father of biology, He made clothes and used the first microscope
to look at fabric from 70x-250x. He was the first to see smaller molecules under the scope
and called them animalacules. didnt share information with anyone or leave a prediseror.
Francesco redi-Meat in a jar, life from life
louis Pasteur-Disproved spontaneous generation,solved fermentation issue and developed the
germ theory of disease.
Ignaz Semmelweis- Savior of mothers, was an obgyn that found the reason mothers were
dieing when assisted by students was because the students were not washing their hands after
dissecting cadavers.
John snow-Discovered the cholera infection in London was affecting those using a specific
water pump.
Edward Jenner-Opened the field of immunology,Developed the first vaccine, Infected young
boy with cow pox then gave him small pox and he didnt get small pox.
Robert Koch-Found the anthrax agent, Developed a pure culture technique. this helped
identify which bacteria caused what symptoms. Postulates was the procedure to see which
bacteria someone was infected by.
Paul Ehrlich- First antibiotic for syphilis "magic bullets"
Alexander Flemming-Discovered penicillium- It had antibacterial properties and developed
penicillin
Salvador luria and Max dulbruck- Spontanious mutation Issue within translation of dna
codons
George beadle and Edwin-one gene-one enzyme
List the 4 types of organisms studied in microbiology and the 2 types not considered
microbes. correct answers Bacteria, fungi, protozoa and algae
Virus's are not considered alive
Helminths are big enough to see with the naked eye
Discuss the historical concept of spontaneous generation and explain the experiments that
where performed to disprove this erroneous idea. correct answers Francesco Redi- Performed
the first controlled expirement with meat in jars..one was open the other was closed. The
, open jars developed maggots and the closed jars did not.He thought he had disproved
spontaneous generation.. Saying life comes from life.
Louis pateur- He did an expirement with sterilized broth and containers. One sealed and one
open, crictics said sealing it kept out life forces. So He did another expierment where the
glasses had long necks..One he left standing, one on its side so the juice came into the neck
and the other he broke off the neck.
The broken glassdeveloped spores and the glass on its side had as well..not the one standing,
he disproved spontaneous generation.
List Koch's postulates correct answers 1pathogen must be present in every case of the disease
Pathogen must be isolated from the host and grown in pure culture
Pathogen from pure culture must cause disease when inoculated into a healthy, susceptile lab
animal
Pathogen must be isolated from inoculated animal and must be shown to be the original
organism
You take a sample from the infected host, You extract one microorganism from the sample
and grow it in a pure culture then infect another organism with the MO and see if the same
symptoms occur. Then you can link a specific organism to an disease.
Describe advances in the field of microbiology. correct answers Louis pastuer discovered the
process of fermentation of wine and came up with a solution. also came up with the gem
theory of disease. Pasturzation
Robert Koch-Found causative agent of anthrax, Developed Postulates to identify a bacteria
that causes a specific disease using pure culture techniques. Potatoes, gelatin, and agar plates.
Gelatin was canceled because gelatinase would completely break down gelatin.
Antibiotics formed "magic bullets" Paul Erchlich
Alexander flemming developed penicillin from finding penicillium.
Molecular biology Second golden stage
One gene-One enzyme George beadle Edwin tatum
Salvidor luria and Max dulbrunk- Spontaneous generation
Alfred Hershey and martha chase-Found DNA in genetic material. Labeled either DNA or
protein with radiation and then moved bacteria in with the phages and tested to see where the
radiation went..in or out of the cell.
Electron microscope-Beam of electron
-Scanning-3D view(SEM)
-Transition-2D Flat section(TEM)
Difference in Eukaryotes and prokaryotes
Euka- Membrane bound organells Pro-did not
Describe the challenges faced during the Third golden age of Microbiology. correct answers
Infectious diseases- Spread easily, New pathogens and old pathogens appearing, antibiotic
resistant and bioterrorism.
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