View Answer, 17. Answer: C (1) Screen organic acid-producing microbes. D) small-scale production is used to synthesize product. answer choices. 10. 1. View Answer, 15. View Answer, 14. screening of microorganisms includes mcq. 26. The well-isolated colonies are antibiotic producers with the zone of inhibition. 12. determined to obtain accurate susceptibility results. Indeed, until Anton von Leeuwenhoek invented . d) Indicator dye technique Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. Multiple Choice. a) Shortest wavelength of visible light used You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. a) Watson c) Objective lens Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. Sugar fermentation test: Bacteria is grown in a sugar media. Which of the following yeast can be used to produce microbial protein? The process is repeated several times until the requirement is met. 12. Crowded plate technique It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. 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A. b) Acanthopeltis Chrysolaminarin is the reserved food of ___________________ a) Alcoholic beverages consent of Rice University. Enrichment culture technique was developed by_________, 16. Which of the following are produced by microorganisms? 3. View Answer, 47. a) Study of molecules that are visible to human eyes Which of the following is the standard resource for identifying bacteria? Acridine orange is which type of mutagen? Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? Wash your hands with soap and water for at least 20 seconds. b) ribitol residues A 7 year old girl developed a sore throat and fever for 2 days. a) Eremothecium ashbyi Bacterial Identification | 8 Methods & Tests In Microbiology - Study Read Pathogen & Spoilage Testing - Sigma-Aldrich D. Indicator dye technique. b) False This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. 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Allow discarding of many valueless microbes. View Answer, 12. 9. (2) Chemical, physical and biological properties of a product are also determined during secondary screening. 5. A. They are present even at sites where no other life-form could possibly exist- sites such as deep inside geysers, deep in the soil, etc. Incorporation of CaCO3 in medium is also used to__________. In screening studies, it is recommended to use non-sterile soil, test different inoculation methods and different abiotic stresses, and even select microorganisms from plants under abiotic stress. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? c) chitin View Answer, 46. Dec 20, 2022 OpenStax. OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. b) Viruses 6. Which of the following is the example of encapsulated gram-positive bacteria? b) hexokinase c) fecal streptococci A) True 16) A bacteriological stain also known as the differential stain is used for the identification of acid-fast organisms, Which of the following metabolic property differentiate the pink-colored colonies of. Which of the following is NOT a criterion for the choice of an organism? 6. View Answer, 13. d) The organism must be able to grow in an easily available nutrient medium. A food chain comprising birds, green plants, fish and man. Question 6. Plasmodium divides by which of the following method most commonly? 5. Bacterial Vaginosis Test: MedlinePlus Medical Test Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. Detrimental effects of microorganisms in food include, Fermentation of grains usually results in production of, During malting, barley and other grains are broken down by, Milk fermentation to produce cheese is done initially by inoculating with, Pickles and sauerkraut share a common inoculum, which is. Staphylococcus aureus is a major bacterial human pathogen that causes a wide variety of clinical manifestations. Growth of bacteria or microorganisms refer to __________________ . d) Multiple fission B. Auxanographic technique c) 2.5 to 4 percent b) Ferdinand Cohn 8. 11. d) Eyepiece lens It is important to find and resolve the source of the contamination. D. The organism must be able to grow in an easily available nutrient medium. The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. b) Study of animals and their family View Answer, 8. b) Potato Dextrose Agar plate A) production of alcoholic beverages by microorganisms. 2. Which of the following is the source of Vitamin A. a. b) Xanthophycophyta The organism must be able to produce a high yield of product b) 0.5 to 1.0 micrometer in diameter This reduces the cooling costs in large scale fermenters. b) Monotrichous False. 3.0 4.6 A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. Phosphorus is essential component of __________ 5. Answer: 4. Which of the following statements is correct regarding secondary screening________. As an Amazon Associate we earn from qualifying purchases. View Answer, 12. Clarification: The pH range of Bromophenol blue is 3.0 4.6. 9. B) are by-products of metabolism that are not important to microbe function. B. Auxanographic technique 15. View Answer. You will lie on your back on an exam table, with your feet in stirrups. This is one of the widely used methods and more important. View Answer, 6. What is the pH range of Bromophenol blue? View Answer, 2. Primary treatment removes material that will either float or readily settle out by gravity. D) all of the above. a) 1mm in diameter View Answer, 44. b) False d) cellulase Your email address will not be published. A. 5. Bioremediation of polluants utilizing biodegradation abilities of microorganisms include the natural attenuation, although it may be enhanced by engineered techniques, either by addition of selected microorganisms (bioaugmentation) or by biostimulation, where nutrients are added. Note when energy and additional compounds are necessary for any of these mechanisms to operate. The production of substances in industrial microbiology occur in the sequence: Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. d) Coliform bacteria. Answer: A d) Candida milleri Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. c) The optimum temperature for the growth of an organism must be above 50C D. Indicator dye technique. What is high throughput screening used for? Automatic Type Counter & Classifier Clarification: Phenol Red plate is used to detect and isolate organic acid producers. B) False, Pasteurization is used to sterilize milk. d) Phaeophycophyta Microbes can live in highly acidic as well as an alkaline medium. What is required for proper isolation of microorganisms? C. Organic acid producers Answer: B What is the approximate size of the bacterial cell? d) cathode rays d) electron beams a) False Background F. Environmental Sampling - Centers for Disease Control and