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34 Cards in this Set
- Front
- Back
T/F Obligate anaerobes transform energy be anaerobic respiration OR fermentation
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True
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T/F: Aerotolerant anaerobes can grow in the presence of Oxygen, and there for are NOT obligate fermenters
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FALSE
They are OBLIGATE FERMENTERS |
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These anaerobes use aerobic OR anaerobic respiration OR fermentation
They grow best in the presence of Oxygen, but can grow without it |
Faculative Anaerobes
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At what pH do
Acidophiles Neutrophiles Alkalophiles ...grow best? |
Acidophiles : below pH 5.5
Neutrophiles : pH 6-8 Alkalophiles : above pH 8.5 |
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This bacteria can tolerate up to 20% salt
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Staphylococcus Aureus
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T/F Halophiles require NaCl for growth
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True
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through which mechanism does Microbial growth occur?
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Binary Fission
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This is the time required for a bacterial population to DOUBLE IN NUMBER
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Generation Time
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What is the first step in identification of the organism and Diagnosis?
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Isolation of the pathogen
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What is the 2nd step in identification of an organism
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Obtain a PURE culture
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This type of media inhibits growth of specific types of organisms by the addition of certain chemicals or dyes
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Selective
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This type of media is Nutrient rich so Most bacteria can grow
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Nutrient/General Purpose
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In this type of media, you can see visual changes in the medium or a difference in the appearance of colonies
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Differential Media
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This type of Media shows certain types of bacterial growth are ENHANCED
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Enrichment
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This form or growth measurement utilizes LIGHT REFRACTION and is preformed on liquid cultures
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Optical Density
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T/F in CFU, Each colony represents a SINGLE cell
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True
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This is the metabolic process that involves the COMPLETE OXIDATION of substrate molecules and the generation of energy
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Cellular Respiration (aerobic/anaerobic)
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This is the PARTIAL OXIDATION of metabolites to produce energy in the ABSENCE OF OXYGEN
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Fermentation
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T/F: BOTH cellular respiration and fermentation begin with glycolysis
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TRUE
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What are the products of Cellular respiration?
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CO2 and H2O
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What are the products of fermentation
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Organic waste products (acid, alcohol)
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In aerobic respiration, the FiNAL electron acceptor is ___
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Oxygen
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In Anaerobic Respiration
(glycolysis--> TCA--> e-transport), the final electron acceptor is _____ |
an Inorganic Molecule containing oxygen
ex. NO3-, NO2- |
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In the Aerobic Process of Fermentation, the final electron acceptor is _____
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An organic Molecule
acid or alcohol |
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T/F: The TCA cycle is the @nd step in aerobic, anaerobic repiration and fermentation
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FALSE
TCA Cycle NOT used in fermentation |
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In bacteria, ATP is made as H+ corsses this cell structure.
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Cytoplasmic Membrane
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T/F: The only ATP yielding reactions occur in glycolysis
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True
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What is an essential function of Fermentation?
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regeneration of NAD+ for use in glycolysis
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T/F: A major benefit of Fermentation is allowing ATP production to continue in the absence of oxygen
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True
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T/F: Anaerobic respiration does NOT mean in the absence of oxygen
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True
it means that the final e- acceptor is an oxygen-containinf molecule, NOT O2 |
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This enzyme makes H202
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Superoxide dismutase
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This enzyme converts H202 to H20 + o2
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Catalase
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This species is known to spoil food in the refrigerator.
its optimal growth range is 10-20 degrees C. |
Psychrophiles
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These anaerobes concider Oz to be TOXIC.
The presence of oxygen either kills the cells or inhibits their growth |
Obligate anaerobes
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