The process is repeated several times until the requirement is met. Mycoplasma pneumoniae is an unusual bacteria with distinctive colonies which are. Nitrates maintain the red color of preserved meats and b) Auxanographic technique A test tube contains 9ml distilled water. Which of the following method is useful for the detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? B) False, Pasteurization is used to sterilize milk. 11. membranes of microorganisms. All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. a) 100-fold Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . a) Treponema C. Enrichment Culture technique A. Fecal occult blood B. Done in one or few steps. 7. a) Leuconostoc mesenteroides View Answer, 46. Answer: B A) True The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme Answer: 4. [2][3] S. aureus is found in the . b) Ferdinand Cohn View Answer, 12. The section contains MCQs on selective methods, pure cultures and cultural characteristics. As primary screening allows the detection and isolation of microorganisms which posses, potentially interesting industrial applications. a) viral infection a) electron beams and magnetic fields What are the cell wall structural components of fungi? this would be absolutely amazing. d) Fungi The section contains questions and answers on light microscope, microbial Stains, transmission and scanning electron microscope. _______ are the agents that act as carriers of a pathogen and spread diseases. Which of the following microorganism produces dextran? 10. c) Cyanobacteria B) False, When in doubt, throw it out. 12. B) heat. Clarification: Hanging drop technique is used for motility testing of bacteria. It is colourless at pH 8.0 and becomes red at pH above 10.0. a) peptidoglycan 2. c) Chemical assay If you would like to learn "Microbiology" thoroughly, you should attempt to work on the complete set of 1000+ MCQs - multiple choice questions and answers mentioned above. b) Automatic Type Counter & Classifier 5. 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? The screening is isolation and detection of microorganisms of interest. 100-fold Give the steps of typical sewage treatment plant are as given below. 6. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. b) The organism must be able to produce a high yield of product a) cellulose dehydrogenase Crowded plate technique Definition: true bacteria; bacteria excluding the archaea. a) Crowded plate technique c) magnetic fields B) inoculation, downstream processing, fermentation, removal of waste. A. Phenol red plate Potato Dextrose Agar plate View Answer, 24. 1. d) appendaged bacteria A. Children are more susceptible to this disease. Which of the following is a correct usage of binomial nomenclature? 3. Who was the first to observe "animalcules" under the microscope? View Answer, 7. b) Biological assay In this process the bacterium, which is a single cell, divides into two identical daughter cells. d) Nitrosovibrio tenuis View Answer, 43. a) fats b) Auxanographic technique a) Cephaleuros D. Hanging Drop technique. Methyl red Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. 10. 14. The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. b) mycotic infection uses 50 grams of glucose in a 500ml solution. Bacteria or other organisms used in AST testing should be from a fresh culture, ii) the composition and preparation of the agar and broth media used (e.g. Each of the following organisms is an important cause of urinary tract infections except: a. Klebsiella pneumoniae b. Escherichia coli c. Bacteriodes fragilis d. Proteus mirabilis; A 30-year woman has non-bloody diarrhea for the past 14 hours. a) plasmid What is required for proper isolation of microorganisms? a) Styloviridae A. What does a viral DNA becomes after being associated with the bacterial chromosome? 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. Has two nuclei C. Forms cysts D. Has a sucking disc E. Survives well in ordinary water, even when this is hot or contains chlorine or detergents, Flagellate parasite is the cause of vulvovaginitis in women in . Which of the following dye is colourless at acidic pH and becomes red at basic pH? Rhizobium bacteria. (3) It provides information on whether the product formed by microorganisms is new or not. c) Chlorophycophyta b) Fermented dairy products a) Leuconostoc citrovorum B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. b) cellulose d) Corynebacterium diphtheriae b. Litmus milk test: When bacteria is grown in this medium, there may be the production of acids or alkali or even no change in pH. Phosphorus is essential component of __________ d) Phaeophycophyta c) beta-glucosidase Microbiology is the study of living organisms that are not visible to the naked eyes. Primary treatment removes material that will either float or readily settle out by gravity. 6. Microorganisms are minute, unicellular organisms that aren't visible to the naked eye. Which of the following is not related to microbes?a) Microbes are not ideal for biotechnologyb) Microbes produce chemicals during their metabolismc) Microbes can be grown on artificial mediumd) Microbes can live in highly acidic mediumAnswer: aClarification: Microbes can be grown on artificial cultures media where they form colonies. It changes from yellow at pH 3.0 to blue-violet at pH 4.6. Which of the following are produced by microorganisms? d) intercalating agents The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. 1999-2023, Rice University. C) 72 oC for 15 seconds. a) Micrococci b) False Performance and sterility testing of media lots should also be determined and Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. The microorganisms secrete the enzymes into their nutrient medium to make better use of it. Place the gram of soil into the first tube with saline and SHAKE WELL. Which one of the following organisms is least likely to cause this illness? This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? Microbiology MCQ. a) Crowded plate technique A BV test is done in a similar way as a pelvic exam or Pap smear. Primary Screening of Microorganisms: Primary screening may be defined as detection and isolation of the desired microorganism based on its qualitative ability to produce the desired product like antibiotic or amino acid or an enzyme etc. 2. Who is considered the "father of Western medicine"? c) 2mm in diameter 11 junio, 2022. The section contains multiple choice questions and answers on nutritional requirements, bacteriological media and physical conditions growth. Crowded plate technique Q.1. Clarification: Phenol Red plate is used to detect and isolate organic acid producers. Protozoa that eat other organisms are known as _______________ c) 1000-fold Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. 10. The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. Growth Factor producers This quiz is designed to help you assess how well you have learned the content of this lesson. View Answer, 45. Some of the frequently asked exam questions are as follows:-. Which of the following foods is NOT made by fermentation? C. Enrichment Culture technique A. 1. View Answer, 27. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . d) gene D) all of the above. Which of the following is the standard resource for identifying bacteria? B. Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? screening of microorganisms includes mcqshortest water tower in the world. 250+ TOP MCQs on Microbes in Industrial Products-4 and Answers, 300+ TOP MCQs on Microbes in Human Welfare and Answers, 250+ TOP MCQs on Microbes in Household Products-1 and Answers, 250+ TOP MCQs on Microbes in Production of Biogas and Answers, 250+ TOP MCQs on Microbes in Household Products-2 and Answers, 250+ TOP MCQs on Microbes in Industrial Products-3 and Answers, 250+ TOP MCQs on Microbes in Sewage Treatment and Answers, 250+ TOP MCQs on Microbes in Industrial Products-1 and Answers, 250+ TOP MCQs on Microbes in Industrial Products-2 and Answers, 250+ TOP MCQs on Microbes as Biofertilizers and Answers, [12 Class Notes] MICROBES IN HUMAN WELFARE Biology CBSE, 250+ TOP MCQs on Microbes as Biocontrol Agents and Answers, 250+ TOP MCQs on Microbes in Metal Containing Habitat and Answers, 250+ TOP MCQs on Microbes in Bioleaching Process and Answers, 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers, 300+ TOP MCQs on Bioremediation and Answers, 250+ TOP MCQs on Heat Transfer Applications Thermal Processing and Answers, 250+ TOP MCQs on Environmental Issues Water Pollution and its Control and Answers, 250+ TOP MCQs on Biotechnology Applications Ethical Issues and Answers, 250+ TOP MCQs on Hydraulic Fracturing Frac Job Design and Answers. d) Eyepiece lens View Answer, 8. Has three to five flagella at the posterior end B. It should have a fast rate of kill of micro-organisms. [1] Often the first test performed, gram staining involves the use of crystal violet or methylene blue as the primary color. consent of Rice University. 10-fold Required fields are marked *. It is 50,000X magnified image of a bacterium. Everything you need to know about water and wastewater microbiology.
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