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Microbiology 2215 CSCC Exam 1 Questions And Answers.
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  • Microbiology 2215 CSCC
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  • Microbiology 2215 CSCC

portion that anchors LPS molecule in lipid bilayer, can act as endotoxin when organism is killed & it is released into circulation (stimulate immune system to attack itself) - Lipid A Basic structure of peptidoglycan - Alternating NAG and NAM forming a glycan chain held together by terapeptide c...

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  • August 21, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
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  • microbiology 2215 cscc

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  • Microbiology 2215 CSCC

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Microbiology 2215 CSCC Exam 1
portion that anchors LPS molecule in lipid bilayer, can act as endotoxin when organism is killed & it is
released into circulation (stimulate immune system to attack itself) - Lipid A



Basic structure of peptidoglycan - Alternating NAG and NAM forming a glycan chain held together
by terapeptide chain



a thin layer of peptidoglycan surrounded by an outer membrane containing lipopolysaccharides -
Gram-negative



A type of dormant cell that is generally resistant to heat, dessication, UV light and chemicals -
Endospore



Accumulations of high molecular weight polymers, synthesized from a nutrient available in relative
excess - Granules



Are prokaryotic or eukarytoic ribosomes large? - Prokaryotic



Bacteria and archaea are both classified as what type of cell? - prokaryote



During the golden years of microbiology what were several beneficial creations? - -pure culture
techniques

-pasteurization process

-aseptic surgical techniques

-vaccines and immunization

-quality microscopes



Energy is expended to accumulate molecules against a concentration gradient - Active transport

, extrachromosomal DNA molecule that may be advantageous to a cell in certain situations -
Plasmid



Four structures that every single living cell must have - 1. DNA

2. Ribosome

3. Cytoplasm

4. Cytoplasmic membrane



How does the bubonic plagu - Bites from fleas, handling infected animals, and airborne



Involved in protein synthesis, 70s in prokaryotes and 80s in eukaryotes - Ribosomes



Is periplasm present in gram-positive or gram-negative? - gram-negative



Is teichoic acid found in gram-positive or gram-negative cells? - gram-positive



Is the endotoxin lipopolysaccharide (LPS) present in gram-positive or gram-negative? - gram-
negative



Is the layer of peptidoglycan surrounding a gram-negative cell thick or thin? - Thin



Is the layer of peptidoglycan surrounding a gram-positive cell thick or thin? - Thick



Is there an outer membrane found on gram-positive or gram-negative cells? - gram-negative



Non-cellular, parasitic, protein-coated genetic elements that can infect all living things including other
microorganisms are classified as ______. - Viruses

A series of experimental proofs that could establish whether an organism was pathogenic and which
disease it caused - Koch's Postulates

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