Midterm Definitions 6,7,8,9
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23 Terms
What are mesophiles?
Moderate-temperature loving 37’C! Most bacteria are this!
What are psychrophiles?
Cold-loving 0’C! cause Listeria monocytogenes
What are thermophiles?
Heat-loving 60’C! archae is this
What is an Obligate Anaerobe?
Microbes that require oxygen to live!
What is an example of an obligate anaerobe?
Microbacterium tuberculosis
What is a Microaerophile?
Requires little oxygen
What is an example of microaerophile?
Campylobacter jejuni and Helicobacter pylori
What is an Aerotolerant anaerobes?
Tolerant but cannot use oxygen
What is an example of an aerotolerant anaerobes?
Propionibacterium acnes
What is Selective media?
Suppress unwanted microbes and encourage desired microbes
What is Differential media?
Allow distinguishing colonies of different microbes on the same plate. It is diagnostic
Give an example of a media that is both selective and differential
Mannitol salt agar (MSA)
What is sterilization?
Removing and destroying all microbial life!
What is Commercial Sterilization?
Kills Clostridium botulinum endospores from canned goods (limited heat treatment)
What is Autoclave and at what temperature should it be and for how long ?
Steam under pressure and at 121C at 15 psi for 15 mins!
What is Pasteurization?
Reduced spoilage organisms and pathogens by heating materials for a short time
What is reverse transcriptase?
An enzyme that uses RNA as a template to produce an DNA copy
What is DNA polymerase ?
An enzyme that uses DNA as a template to produce a DNA copy
What is a RNA polymerase
A enzyme the uses DNA as a template to produce an RNA copy
A virus that has a single, positive sense of RNA, and possesses an envelope. Would most likely belong to ?
Togovirus group
How does Bacteriophage differ from animal virus replication?
Only involves injection of naked nucleic acid into the host cell
What is a Viral species?
group of viruses that has the same genetic information and ecological niche
The preservation of beef jerky from microbial growth relies on a method of microbial control is known as ?
Dessication