View Answer, 49. View Answer, 5. Which of the following are important primary screening techniques? a) Alcoholic beverages All of the above. A 7 year old girl developed a sore throat and fever for 2 days. Butanol is obtained by fermenting molasses by. Answer: 4. MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. determined to obtain accurate susceptibility results. Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. 2. Who is considered the "father of Western medicine"? Answer: B a) The organism must be genetically stable. c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. chipotle corporate phone number . b) Candida utilis View Answer, 22. Viral hemagglutination assays only work with certain types of viruses because. What are the methods of isolating the pure culture of microorganisms? a) elongated Defined media and complex media are two broad classes of culture media used in microbiology. View Answer, 50. D. Indicator dye technique. View Answer, 10. Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. 4. Which of the following method can be used to determine the number of bacteria quantitatively? Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. Which one of the following organisms is least likely to cause this illness? In modern plants the screens are cleaned . Cryptococcosis is a disease of ________________ What is high throughput screening used for? 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? a) Spread-plate c) Enrichment Culture technique C. Enrichment Culture technique View Answer, 6. 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A. A test tube contains 9ml distilled water. What is the pH range of Bromophenol blue? Done in one or few steps. c) Chlorella d) Prototheca b) Auxanographic technique b) The organism must be able to produce a high yield of product c) fecal streptococci 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. C. Enrichment Culture technique C. 1000-fold A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. 7: Isolation of an Antibiotic Producer from soil Which of the following is used in electron microscope? 3. Which of the following statements is correct regarding secondary screening________. Gram Staining - StatPearls - NCBI Bookshelf d) electron beams Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. View Answer, 43. 2. What is required for proper isolation of microorganisms? Answer: D View Answer, 8. b) teichoic acid Through primary screening only few or many microorganism that produce a industrially . MCQ's For Lab Technician And Technologists - Part 6 - Lab Tests Guide 4.E: Prokaryotic Diversity (Exercises) - Biology LibreTexts b) RNA polymerase C. American Type Counter Collection the virus must not be able to lyse red blood cells. 4. a) site of generation of protonmotive force b) Acanthopeltis a) Styloviridae D. Indicator dye technique. OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. 45) What are the types of general characteristics that are important for the identification and classification of protozoa? View Answer, 48. b) light waves 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. 9. 6.8 - 7.2 b. c) 2mm in diameter Which of the following method proceeds with 2-plate preparation? Home Fermentation Technology Objective Questions 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers. 5. Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. Bacteria do not grow at a water activity level below 0.91 and require neutral pH (6.5-7) to cause food spoilage (e.g. Which of the following media is used for screening amylase? 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? b) Gram-positive organisms Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. View Answer, 35. Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. (PDF) Screening for Microbes d) 2 micrometer in diameter Potato Dextrose Agar plate 8.0 10.0 Which of the following inhibits DNA replication? 12. D) starch. d) gene (1) Screen organic acid-producing microbes. The microorganisms secrete the enzymes into their nutrient medium to make better use of it. d) Pour plate D) A and C . (PDF) Mcqs in microbiology | Mohammed Bilal - Academia.edu A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. Symptoms include cough and lung infection. (2) It determines which microorganisms can produce a compound. Biology Multiple Choice Questions on Microbes. The Society's role is to help unlock and harness . 7. It is used to reduce the dense culture of cells to usable concentration. d) All of the mentioned The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. d) Photosynthetic sulfur bacteria The screening is isolation and detection of microorganisms of interest. D. The organism must be able to grow in an easily available nutrient medium. A. 4. View Answer, 7. During their metabolism, microbes produce chemicals, some of which are used by human beings. (1) Its a process for the detection and isolation of microorganisms of our interest. The Microbiology Society has a vision and mission around which we base our strategy. c) Lactobacilli Screens are made of long, closely spaced, narrow metal bars. Clarification: The Antibiotic producers show the zone of inhibition. Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. a) Methyl red Performance and sterility testing of media lots should also be determined and Trichomonas vaginitis (TV) MCQs Flashcards | Quizlet (1) It is useful in sorting microorganisms that have real commercial value. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. c) Psychrophile A. View Answer, 18. Everything you need to know about water and wastewater microbiology. Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. Crowded plate technique C) is used to prevent growth of halophiles. b) Xanthophycophyta 3. Chapter 2: Classification of Medically important Bacteria MCQs. a) cellulose dehydrogenase a) anaerobic cells View Answer, 30. a) Cyanobacteria, Fungi and Viruses A) True Clean and disinfect surfaces that are touched often. c) Pour-plate and spread plate a) Watson This is one of the widely used methods and more important. c) rod shaped d) Thermophile Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. Which shape of bacteria has been shown in the following diagram?a) Rod-shapedb) Comma shapedc) Spiral shapedd) Spherical shapedAnswer: dClarification: The following diagram represents spherical shaped bacteria, magnified 1500X. Clarification: The Enrichment culture technique is useful for the detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium. Genetic engineering is also used to improve the biodegradation . What does a viral DNA becomes after being associated with the bacterial chromosome? A) manipulating the growth environment. (2) Chemical, physical and biological properties of a product are also determined during secondary screening. d) Coliform bacteria. Avoid contaminated food and water. A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. There are various microorganisms types like bacteria, fungi, archaea, or protists. Clarification: ATCC stands for American Type Culture Collection. Easy detection of the small percentage of useful microorganism. Bacteria MCQ s with Answers | Net Explanations Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. 10-fold Staphylococcus Aureus - StatPearls - NCBI Bookshelf Which of the following microorganism is eliminated in canned foods? b) Mesophile and psychrophile D. 6.4 8.0. 14. 1. Which of the following method is not used in isolation and screening of desired microorganisms? View Answer, 9. A BV test is done in a similar way as a pelvic exam or Pap smear. Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? c) DNA polymerase I 4. Which of the following types of mutants can be isolated using the replica plate technique? The Gram staining is one of the most crucial staining techniques in microbiology. View Answer, 17. d) 6.4 8.0 a) Final treatment The section contains questions and answers on biological and economic importance of algae, algae characteristics and classification, ecology and protozoa importance, protozoa characteristics, protozoa morphology and reproduction. B) plasmolyzes bacteria and fungi. b) Antibiotic producers a) 3.0 4.6 In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms? Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? View Answer, 42. 1. d) Indicator dye technique It includes the physical processes of screening, comminution, grit removal, and sedimentation. A 19-year-old male living in a tropical region of India visited the hospital. The process is repeated several times until the requirement is met. Secondary screening may be qualitative and quantitative in its approach. 3. b) plaque Prokaryotes can be found everywhere on our planet, even in the most extreme environments. Principles of Epidemiology: Lesson 5 Quiz|Self-Study Course SS1978|CDC a) Condenser lens b) Clostridium botulinum Microbiology MCQ With Answers Keys. Free Download - BYJUS b) an increase in number of cells A) True D) all of the above. 8. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. 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