1.Tabulate the similarities and differences between pasteurization and sterilisation, give examples. 2. Name a polysaccharide effective against gram positive bacteria. 3. What is effective against yeast when hydrolysed to methanol and CO2.
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1.Tabulate the similarities and differences between pasteurization and sterilisation, give examples.
2. Name a polysaccharide effective against gram positive bacteria.
3. What is effective against yeast when hydrolysed to methanol and CO2.
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- Can you give me an example of a specific medium in culture media and fill the information below. General Information Specific a. Name of medium: b. Physical form: c. Category based on formulation: d. Purpose/uses/function: e. List of Ingredients and concentration (per 1000 ml) f. How to prepare?which of the following is best to sterilize heat-liable (sensitive) solutions? a, pasteurization b. autoclave c. dry heat d. filration e. none of the above2. A mannitol-salt agar plate was inoculated with these bacteria and is shown below. A. What type of organisms grow on this medium? B. Based on the reaction below, what can you say about the organism derived from the patient's abscess?
- 9. The process in which all organisms and pathogens are destroyed is called ------. a) Disinfection b) Sterilization c) Antisepsis d) PasteurizationThe most versatile method of sterilizing heat-sensitive liquids isa. UV radiation b. exposure to ozone c. beta propiolactone d. filtrationMany antibacterial hand soaps contain the chemical agent _____ , which belongs to the _____ antimicrobial category. a. sodium hypochlorite; halogen b. triclosan; phenolic c. sodium chlorite; halogen d. ethanol; alcohol
- 1. Give the method of sterilization of these laboratory apparatuses how they are sterilized; inoculating loop, glasswares. culture media, skin, and milk. Please cite where you got the information. Thank you1. The Petri Dish method is used in microbiology to raise bacteria in: a) rapid growth b) pure culture c) septic environment d) all of the above 2. What is the difference between antiseptic and sanitization? 3. In order to prevent any kind of contamination the medium must be _________ before placing it in the Petri dish. a) lyophilized b) pasteurized c) autoclaved d) distilledDefine disinfection. Compare/contrast it with sterilization, antisepsis and bacteriostasis. Give the modes of action of the different antiseptics/disinfectants used in the activity (5% sodium hypochlorite (bleach), 0.05% sodium hypochlorite (bleach), 70% alcohol, 40% alcohol, Iodophor (Betadine), and Mouthwash)
- Which of the following is false?a) A high-level disinfectant cannot be used as a sterilant.b) Critical items must be sterilized before use.c) Low numbers of endospores may remain on semicritical items.d) Standard sterilization procedures do not destroy prions.e) Quaternary ammonium compounds can be used to disinfect food preparation surfaces.Which of the following is not used as an antiseptic? A. Chlorhexidine B. Phenol C. Iodophor D. Hydrogen PeroxideGive the uses and disadvantages of the heavy metal chemical agents, glutaraldehyde, and the sterilizing gases.