CELL CULTIVATIONS QUIZ

Which of the following was the first widely used antiseptic and disinfectant?

Iodine

Phenol

Alcohol

Chlorine

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has most heat resistant spores?

Clostridium perfringens

Clostridium histolyticum

Bacillus cereus

Bacillus stearothermophilus

TRUE ANSWER : ?
YOUR ANSWER : ?

Ethylene oxide is used to destroy or kill which of the following microbes?

Bacteria

Spores

All of these

Fungi

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is best used for long term storage of microbial samples when carried out properly?

Storage in a freezer at -10°C

Storage in a refrigerator on an agar slant

Storage in a freezer at ultra low temperatures (-70°C)

Storage on a petri plate at room temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Which disinfectant was the most effective against Salmonella"?

Phenol

Hexachlorophene

Cetylpyridinium chloride

Merthiolate

TRUE ANSWER : ?
YOUR ANSWER : ?

Sweet and salty foods frequently don't require refrigeration to prevent spoilage because they have

insufficient nutrients

high concentration of solutes

toxic alkaline chemicals

low pH

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is sterilized with the help of glutaraldehyde?

Bronchoscopes

Cystoscopes

Thermometers

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following disinfectants act by disrupting microbial membranes?

Aldehydes

Heavy metals

Halogens

Cationic detergents

TRUE ANSWER : ?
YOUR ANSWER : ?

Milk is pasteurized in batch method by keeping it at

72°C for 60 seconds

72°C for 6 minutes

73°C for 30 minutes

63°C for 30 minutes

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following items could be sterilized by dry heat sterilization?

Glass pipettes

Intravenous (IV) solution

rubber gloves

Plastic IV bags

TRUE ANSWER : ?
YOUR ANSWER : ?

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