The lowest temperature that kills all microorganisms in a liquid suspension in 10 minutes is known as the?
Thermal Death point.
100
Who is credited with developing a procedure to heat wine at temperatures well below boiling to prevent spoilage of the wine?
Who is Pastuer?
100
Microorganisms belonging to the same __________ would be expected to have the most characteristics in common with each other?
Species.
100
X-rays, cigarette smoke and ultra violet light can cause these?
What is a mutagen
100
Reversibly inhibit growth of bacteria, allowing host immune defences to eliminate infection?
Bacteriostatic.
200
A device used to sterilize equipment and supplies by subjecting them to high pressure saturated steam at 121 °C for around 15–20 minutes?
Autoclave.
200
These chemical agents control bacteria without the use of heavy metals, such as Chlorine and Bromine and are called what?
Halogens.
200
What was one of the first and most useful microscopic tests for classifying bacteria that is still important today?
Gram Stain
200
A disease that is caused by a pathogen and that can spread from one individual to another?
What is an infectious disease
200
Which antibiotic has a beta-lactam ring?
Penicillin.
300
Ionizing Radiation is also considered?
Bactericidal.
300
A(n) ____ is used to prevent infection by killing or inhibiting pathogen growth on animal tissues.?
Antiseptic.
300
Biochemical tests are used to determine?
Enzyme Activity.
300
What protects animal organisms from bacterial disease from inanimate objects?
Disinfectants.
300
The most selective antibiotics are those that interfere with the synthesis of?
Bacterial Cell Walls.
400
If a canning procedure is not properly followed, which type of microbe is most likely to grow in the canned food?
Obligate anaerobe.
400
Which of the following was the first widely used antiseptic and disinfectant?
Phenol.
400
Which kingdom would an organism with the following characteristics most likely belong: true nucleus, non-photosynthetic, non-motile, absorb nutrients, and reproduce by forming spores?
Fungi.
400
The key factor responsible for the rise in drug-resistant pathogens is?
Inappropriate use of antimicrobial therapy.
400
Quinolones are?
Broad Spectrum antibiotics.
500
The time in minutes at a specific temperature needed to kill a population of cells is the?
Thermal Death Temperature.
500
To preserve foods by using salts and sugars, works by?
Creating a hypertonic environment.
500
The Whittaker five kingdom system of classification divides living organisms into which of the following kingdoms?
Monera, Protista, Plants, Animals, Fungi.
500
The most common bacterial disease in humans is?
Tooth Decay.
500
Some countries currently use which of the following to treat bacterial infections? ( outlawed in the US )