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...
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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