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34 Cards in this Set

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T/F Obligate anaerobes transform energy be anaerobic respiration OR fermentation
True
T/F: Aerotolerant anaerobes can grow in the presence of Oxygen, and there for are NOT obligate fermenters
FALSE

They are OBLIGATE FERMENTERS
These anaerobes use aerobic OR anaerobic respiration OR fermentation

They grow best in the presence of Oxygen, but can grow without it
Faculative Anaerobes
At what pH do

Acidophiles

Neutrophiles

Alkalophiles

...grow best?
Acidophiles : below pH 5.5

Neutrophiles : pH 6-8

Alkalophiles : above pH 8.5
This bacteria can tolerate up to 20% salt
Staphylococcus Aureus
T/F Halophiles require NaCl for growth
True
through which mechanism does Microbial growth occur?
Binary Fission
This is the time required for a bacterial population to DOUBLE IN NUMBER
Generation Time
What is the first step in identification of the organism and Diagnosis?
Isolation of the pathogen
What is the 2nd step in identification of an organism
Obtain a PURE culture
This type of media inhibits growth of specific types of organisms by the addition of certain chemicals or dyes
Selective
This type of media is Nutrient rich so Most bacteria can grow
Nutrient/General Purpose
In this type of media, you can see visual changes in the medium or a difference in the appearance of colonies
Differential Media
This type of Media shows certain types of bacterial growth are ENHANCED
Enrichment
This form or growth measurement utilizes LIGHT REFRACTION and is preformed on liquid cultures
Optical Density
T/F in CFU, Each colony represents a SINGLE cell
True
This is the metabolic process that involves the COMPLETE OXIDATION of substrate molecules and the generation of energy
Cellular Respiration (aerobic/anaerobic)
This is the PARTIAL OXIDATION of metabolites to produce energy in the ABSENCE OF OXYGEN
Fermentation
T/F: BOTH cellular respiration and fermentation begin with glycolysis
TRUE
What are the products of Cellular respiration?
CO2 and H2O
What are the products of fermentation
Organic waste products (acid, alcohol)
In aerobic respiration, the FiNAL electron acceptor is ___
Oxygen
In Anaerobic Respiration
(glycolysis--> TCA--> e-transport),

the final electron acceptor is _____
an Inorganic Molecule containing oxygen

ex. NO3-, NO2-
In the Aerobic Process of Fermentation, the final electron acceptor is _____
An organic Molecule

acid or alcohol
T/F: The TCA cycle is the @nd step in aerobic, anaerobic repiration and fermentation
FALSE

TCA Cycle NOT used in fermentation
In bacteria, ATP is made as H+ corsses this cell structure.
Cytoplasmic Membrane
T/F: The only ATP yielding reactions occur in glycolysis
True
What is an essential function of Fermentation?
regeneration of NAD+ for use in glycolysis
T/F: A major benefit of Fermentation is allowing ATP production to continue in the absence of oxygen
True
T/F: Anaerobic respiration does NOT mean in the absence of oxygen
True

it means that the final e- acceptor is an oxygen-containinf molecule, NOT O2
This enzyme makes H202
Superoxide dismutase
This enzyme converts H202 to H20 + o2
Catalase
This species is known to spoil food in the refrigerator.

its optimal growth range is 10-20 degrees C.
Psychrophiles
These anaerobes concider Oz to be TOXIC.

The presence of oxygen either kills the cells or inhibits their growth
Obligate anaerobes