Description : Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type? A.Pour plate B.Spread plate C.Both (a) and (b) D.Streak plate technique
Last Answer : C.Both (a) and (b)
Description : Which one of the following is NOT part of the streak-plate method? a. Making four sets of streaks on a plate. b. Diluting a mixed culture in molten agar. c. Using a mixed culture. d. Using a sterilized loop.
Last Answer : b. Diluting a mixed culture in molten agar.
Description : Which of the following terms best fits the destruction of all living micobes, spores and viruses. a. Sanitization b. Sterilization c. Aseptic Technique d. Pasteurization
Last Answer : b. Sterilization
Description : Which of the following is method to determine viable count? A Plate Count technique B Breed method C Turbidimetry D Proportional count technique
Last Answer : A Plate Count technique
Description : In 1842, Edwin Chadwick's report raised the possibility that sewage spreads disease along with a ______ outbreak which began the ________ movement. a. typhoid, aseptic b. cholera, sanitation c. polio, immunization d. none of the above are correct
Last Answer : b. cholera, sanitation
Description : The virus(es) which can cause aseptic meningitis is/are A.Polioviruses B.Coxsackieviruses C.Echo viruses D.All of these
Last Answer : D.All of these
Description : One of the reasons Koch was able to show the cause of disease was that he could grow them a. in a pure culture b. in an animal host c. in a tissue culture d. in chicken eggs
Last Answer : a. in a pure culture
Description : Which one of the following is not a part of Koch s postulates? a. The microorganism must be isolated from a dead animal and pure cultured b. The microorganism and disease can be identified from ... a healthy susceptible animal. d. The same microorganism must be present in every case of the disease.
Last Answer : d. The same microorganism must be present in every case of the disease.
Description : Explain the term ‘Aseptic technique’
Last Answer : Definition: The method which is used to prevent the access of microorganism during the preparation of parenteral product and their testing are called Aseptic Technique The entry of the ... supplied under positive pressure Ultra violet lamps are fitted in the area to maintain sterility
Description : What is aseptic technique? List the various sources of contamination and explain the sterility test.
Last Answer : Aseptic technique: The method which is used to prevent the access of microorganism during the preparation of parenteral product and their testing are called Aseptic Technique . Sources of contamination: 1) ... the sample is declared to have pass the test and same test is repeated for two times.
Description : What is aseptic technique? State its importance.
Last Answer : Definition: Aseptic technique The method which is used to prevent the access of microorganism during the preparation of parenteral product and their testing are called Aseptic Technique . Importance ... be maintained. 7. It helps to maintain required environment for testing of sterile products.
Description : _____ is an example of a differential stain technique. a. Simple staining b. Negative staining c. Contrast staining d. Gram staining
Last Answer : d. Gram staining
Description : Viruses can be grown on _____. a. nutrient agar b. nutrient broth c. blood agar d. tissue culture
Last Answer : d. tissue culture
Description : Which of the following method is not used for total count? A Coulter count B Turbidimetry C Plate count method D Breed method
Last Answer : C Plate count method
Description : One indirect way to determine microbial growth is using a _____. a. UV light b. Spectrophotometer c. Light meter d. Radioactive counter
Last Answer : b. Spectrophotometer
Description : Which of the following is used for the proper maintenance and preservation of pure cultures? A- Periodic transfer to fresh media B- Preservation by overlaying cultures with mineral oil C- Preservation by lyophilization D- All of the above
Last Answer : All of the above
Description : The technique of obtaining large number plantlets by tissue culture method is called
Last Answer : The technique of obtaining large number plantlets by tissue culture method is called A. ... . organ culture C. micropropagation D. macropropagation
Description : A large number of identical plants can be obtained in a short span of time through - (1) large number of seeds of a single plant (2) stern cuttings (3) tissue culture technique (4) hydroponics method
Last Answer : (3) tissue culture technique Explanation: Plant tissue culture is a collection of techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium ... hormones, which causes the plant part to grow at very rapid rates to produce new plantlets.
Description : The technique of obtaining large number of plantlets by tissue culture method is called (a) plantlet culture (b) organ culture (c) micropropagation (d) macropropagation.
Last Answer : (c) micropropagation
Description : A large number of identical plants can be obtained in a short span of time through (1) large number of seeds of a single plant (2) stem cuttings (3) tissue culture technique (4) hydroponics method
Last Answer : tissue culture technique
Description : Plate counts are often reported as A- cfu B- cfu/ml C- Both (a) and (b) D- thousands/ml
Last Answer : cfu/ml
Description : When Performing medical aseptic hand washing the hands should be positioned?
Last Answer : In medical you are to wash hand very often. When washing thehands you should wash them with soap from the top to thebottom.
Description : Class 100 area is referred to (A) Manufacturing area (B) Aseptic area (C) Clean room (D) Ware house
Last Answer : (B) Aseptic area
Description : Define aseptic techniques. What are the various sources of contamination?
Last Answer : Definition: Aseptic technique The method which is used to prevent the access of microorganism during the preparation of parenteral product and their testing are called Aseptic Technique Sources of ... are also a source of contamination. A handkerchief is the richest source of contamination.
Description : Give any four precautions to be taken during aseptic work.
Last Answer : i. Self hygiene: avoid coughing, sneezing. ii. Avoid contamination of products. iii. Cover the whole body by Wear complete body suit up to foot. iv. Wear hand gloves. v. Allow minimum persons to work in aseptic area. vi. Don’t touch unnecessarily.
Description : Explain the term aseptic techniques. What are the various points to be considered while designing an aseptic room?
Last Answer : Definition: The method which is used to prevent the access of microorganism during the preparation of parenteral product and their testing are called aseptic Technique . Design of aseptic room: 1. Site: ... connection. Vacuum. Disposable waste. 6. Furniture: Shack type. Fume -cupboard.
Description : Area of lysis on a bacterial lawn culture produced by a phage is known as A.pock B.plaque C.pox D.all of these
Last Answer : B.plaque
Last Answer : .plaque
Description : Starvation proteins are produced by a culture during which of the following segments of the growth curve? A - Lag phase B- Exponential phase C- Stationary phase D- Death phase
Last Answer : Stationary phase
Description : Why the bacterium Treponemapallidum is difficult to culture? A-.Because it requires a great deal of water to reproduce B- .Because it is unable to use carbohydrates as an energy source ... TCA cycle and oxidative phosphorylation D- Because it requires extremely low temperature at which water freezes
Last Answer : Because it lacks the genes needed for TCA cycle and oxidative phosphorylation
Description : A disease producing species occurring in a mixed culture can often be selected on the basisofits A- pathogenic properties B- special carbon source C- special nitrogen source D-.none of these
Last Answer : pathogenic properties
Description : Agar is used for solidifying culture media because A-it does not affect by the growth of bacteria B-it does not add to the nutritive properties of the medium C-the melting and solidifying points of agar solution are not the same D-all of the above
Last Answer : all of the above
Description : or the selection of endospore-forming bacteria, a mixed culture can be heated at A- 80°C for 10 minutes B- 70°C for 10 minutes C- 60°C for 10 minutes D- 90°C for 10 minutes
Last Answer : 80°C for 10 minutes
Description : When the Exxon Valdez oil spill occurred, technologists "fertilized" the oil-soaked water with _____ to modify the environment and stimulate he growth of naturally occurring microorganisms. a. nitrogen sources (e.g., urea) b. phosphorus compounds c. other mineral nutrients d. A-C above are correct
Last Answer : d. A-C above are correct
Description : Rhizobium fixes nitrogens in the roots of _____, so they don't need to be fertilized; in fact they add nitrogen to the soil. a. corn b. legumes c. wheat d. grasses e. oats
Last Answer : b. legumes
Description : Some scientists‘ estimate that in nature, _____ of all microbial activities occur in biofilms. a. 0.25 b. 0.33 c. 0.45 d. 0.6 e. 0.99
Last Answer : e. 0.99
Description : The modern refrigerator is set at _____ to provide a suitable environment for preserving food without destroying appearance, or taste. a. 30°F b. 35°F c. 40°F d. 45°F e. 50°F
Last Answer : c. 40°F
Description : The _____ is the most commonly infected region of the respiratory tract. a. Lungs b. Bronchi c. Throat d. Nose e. Tonsils
Last Answer : d. Nose
Description : An example of an anaerobe that causes disease in humans is _____. Clostridium a. E.coli b. Salmonella c. Pseudomonas
Last Answer : a. E.coli
Description : _____ from the mold Aspergillus oryzaeis used as a spot remover in laundry presoaks, as an adhesive, and in baking, where it digests starch to glucose. a. Amylase b. Lactase c. Sucrase d. Maltase
Last Answer : a. Amylase
Description : The alcoholic content of beer is approximately _____. a. 0.02 b. 0.04 c. 0.06 d. 0.08
Last Answer : b. 0.04
Description : : In the United States, distilled beverages are designated with a "proof number," which is _____ the percentage of the alcohol content. a. half b. one fourth c. twice d. 4 times
Last Answer : c. twice
Description : To the present time, over _____ antibiotic substances have been described and approximately _____ such drugs are available to the medical practitioner. a. 10,000; 100 b. 8,000; 100 c. 6000; 300 d. 4,000; 400
Last Answer : b. 8,000; 100
Description : Bacillus subtilis makes a good "bacterial factory" in genetic engineering because _____. a. it normally retains the products it makes b. it is not a human pathogen c. contains endotoxins in it's cell wall d. traditionally ferments sugars
Last Answer : b. it is not a human pathogen
Description : One of the benefits of biofilms is _____. a. quorum sensing b. keeping aquariums clean c. bioremediation of toxic wastes d. production of oil
Last Answer : c. bioremediation of toxic wastes
Description : _____ bacteria live as individuals and do not live in biofilms. a. Planktonic b. Anaerobic c. Aerobic d. Facultative anaerobic
Last Answer : a. Planktonic
Description : An emerging pathogen associated with contaminated water is _____. a. typhoid fever b. cholera c. shigellosis d. Vibrio vulnificus
Last Answer : d. Vibrio vulnificus
Description : Polluted water usually contains coliform bacteria like _____. a. Streptococcus b. Proteus c. Escherichia coli d. Pseudomonas
Last Answer : c. Escherichia coli
Description : _____ is water that is safe to drink. a. Potable water b. Surface water c. Well water d. Ground water
Last Answer : a. Potable water
Description : _____ is used to make processed cheeses and "cheese foods." a. Sour curd b. Sweet curd c. Whey d. Butterfat
Last Answer : c. Whey