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Microbiology quiz 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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Microbiology quiz 1 | Questions And Answers Latest {} A+ Graded | 100% Verified
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Microbiology quiz 1 | Questions And Answers Latest {2024- 2025} A+ Graded| 100% Verified
what is the theory of spontaneous generation - Microorganisms can arise from non-living matter
(spontaneously)
theory of spontaneous generation is also called - abiogenesis
scientists involved in investigating the idea of spontaneous generation - Francesco Redi: proved maggots
didn't arise from rotting meat (open jars, gauze, and closed)
Louis Pasteur: filtered air through cotton plug and then s-flask (disproved it)
what are the structures present in hay infusions - they contained heat-resistant microbes
what experiment disproved the theory of spontaneous generation - Louis Pasteur's experiment with the
s-flask where the microorganisms got caught- demonstrated that air is filled with microorganisms
animacules are - microorganisms
animacules was coined by - Antony Van Leeuwenhoek (father of microbiology)
the system by which organisms are named is - nomenclature:
Genus: the 1st part of the scientific name
Species: epithet (name-not capital)
Strain: symbols etc.
in the scientific name Escherichia coli 0157:H7 which is the genus, species and strain? - genus:
Escherichia
species: coli
strain: 0157:H7
, Golden Age of Microbiology - 1857-1914
Beginning with Pasteur's work, discoveries included the relationship between microbes and disease,
immunity, and antimicrobial drugs
carbohydrates structure - carbon, hydrogen, and oxygen in a 1:2:1 ratio
carbohydrates function - source of food and carbon (energy)
Carbohydrates examples - sugars and starches
Phospholipid (cell membrane) - -composed of long H-C chains
-non-polar covalent bonds: hydrophobic head
-hydrophilic tail
-form lipid bilayer with heads and tails
Proteins (amino acids) - -proteins are made up of AA subunits
protein characteristics depend mostly on - shape
The shape of a protein is determined by - amino acid sequence
protein function is determined by - protein structure
protein denaturation - when proteins are subject to heat, acid or other conditions that disturb their
stability; protein bonds break, pH changes, and they lose their function
nucleic acids - carry genetic info in sequence of nucleotides
DNA - has 3 parts-
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