a) Condenser lens On the second day, the symptoms got worse and she was taken to the hospital. Defined media and complex media are two broad classes of culture media used in microbiology. c) Spirochaeta c) Mumps Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. d) 6.4 8.0 a) Phenol red plate View Answer, 4. a) x-rays 12. 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False. B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. 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. B. 1. 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. The normal composition of feces includes all of the following except: A. Bacteria B. Crowded plate technique B. Auxanographic technique 37) Which of the following is the selective media used for the cultivation and isolation of. It should not leave damage and odour. Which one of the following organisms is least likely to cause this illness? Acridine orange is which type of mutagen? 3. a) Vibrio cholerae A. False. d. using damaged equipment and glassware. d) Eyepiece lens 6. 3.0 4.6 D. Indicator dye technique. Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. d) bacterial infection View Answer, 18. B. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. Clarification: ATCC stands for American Type Culture Collection. Growth of bacteria or microorganisms refer to __________________ c) Chlorella c) An objective with minimum numerical aperture The section contains MCQs on microorganisms, industry, industrial uses of bacteria, molds and yeasts, genotypic changes, bacterial recombination and conjugation, bacterial transduction and transformation. a) Crowded plate technique d) Nitrosovibrio tenuis View Answer, 13. d) chitin, cellulose, or hemicellulose 8.0 10.0 screening of microorganisms includes mcqshortest water tower in the world. View Answer, 46. Primary treatment removes material that will either float or readily settle out by gravity. Good work practices include, a. smelling and tasting chemicals . 25. a)Microaerophilic. d) Multiple fission Clarification: Auxanographic technique proceeds with 2-plate preparation. During the test, You will take off your clothes below your waist. c) Microviridae Several microbes are useful to humans in diverse ways like in household products, industrial products, agricultural products, etc. Which of the following types of mutants can be isolated using the replica plate technique? a) True D) 134 oC for 1 second. 10. then you must include on every digital page view the following attribution: Use the information below to generate a citation. View Answer, 15. b) Auxanographic technique c) Enrichment Culture technique A. 14. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. The section contains MCQs on selective methods, pure cultures and cultural characteristics. 8. Phosphorus is essential component of __________ Phagocytosis is a critical part of the immune system. Clarification: Screening is the use of highly selective procedures to allow the detection and isolation of only those microorganisms of interest from a large microbial population. Self-Assessment Quiz. Answer: A 8. Which scientist proposed adding a kingdom for protists? Children are more susceptible to this disease. The presence of E. coli in a drinking water sample almost always indicates recent fecal contamination, meaning there is a greater . Clarification: The pH range of Bromophenol blue is 3.0 4.6. 26. View Answer, 50. Microbial enzyme production concentrates on simple hydrolytic enzymes (proteases, amylases, pectinases) that degrade natural polymers such as proteins, starches, or pectin. c) Spirillum volutans 4.E: Prokaryotic Diversity (Exercises) - Biology LibreTexts Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? Microorganism - Definition, Types, Examples & Quiz - Biology Dictionary True 12. Staphylococcus Aureus - StatPearls - NCBI Bookshelf Which is the secondary stage? . 9. The microorganisms from lakes and rivers can grow at a salt concentration of _________ Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? c) MacConkeys Agar plate (1) Screen organic acid-producing microbes. B. Auxanographic technique a) Cephaleuros The section contains MCQs on chemotherapy historical highlights, antibiotics and their actions, microbiological assay of antibiotics, antifungal, antiviral and antitumour antibiotics. The well-isolated colonies are antibiotic producers with the zone of inhibition. Answer: 4. B. Coliform Bacteria in Drinking Water - Washington State Department of Health Answer: A The section contains MCQs on size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall. c) nucleotides You may refer to the lesson text whenever you are unsure of the answer. Germs: Protect against bacteria, viruses and infections B) False, Yeast cells prefer aerobic conditions to multiply in number. Secondary screening may be qualitative and quantitative in its approach. 6. View Answer, 3. 3. Who was the first to observe "animalcules" under the microscope? B) using small scale containers to concentrate production. d) 2 micrometer in diameter a) parasitic A. American Type Culture Collection D. 6.4 8.0. It is important to find and resolve the source of the contamination. A 7 year old girl developed a sore throat and fever for 2 days. Biotechnology, the practical application of microorganisms in making products for human use, is a relatively new science, begun since Pasteur's time. Through primary screening only few or many microorganism that produce a industrially . D) starch. Which of the following are the growth morphology of the protozoa? 14. c) Mycobacterium tuberculosis c) The optimum temperature for the growth of an organism must be above 50C 2. a) The organism must be genetically stable. Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. Types of pathogens include specific bacteria strains, viruses, fungi, or parasites that can cause illness in its host. 9. c) base analog C) is used to prevent growth of halophiles. Pathogen & Spoilage Testing - Sigma-Aldrich Bacterial Vaginosis Test: MedlinePlus Medical Test a) glycerol residues Answer: B View Answer, 33. 6. 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. D. Rose Bengal Agar plate. Complex media are prepared using digests of microbial, animal, or . screening of microorganisms includes mcq Answer: A d) The organism must be able to grow in an easily available nutrient medium. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. PDF Practice Exam Questions - University of Minnesota Duluth 6. c) prophage 2. 4. False. It changes from yellow at pH 3.0 to blue-violet at pH 4.6. d) 2-fold 12. d) Photosynthetic sulfur bacteria Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. b) Microbacteria 4. Antibiotic producing microorganisms can be detected by the method__________, 5. MCQ.9):Which bacteria have flagella of amphitrichous type means the flagellum are present at both the sides? What is the name of the procedure performed under sterile conditions to eliminate Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. d) hydrophobic barrier and site of generation of protonmotive force You can also download the PDF of Microbiology MCQs by applying below. Yeast cells are good source of. 10. 13. D. Indicator dye technique. PDF Question Bank Multiple choice - Virginia Tech Home Class 12 Biology Objective Questions 250+ TOP MCQs on Microbes and Answers. c) ribitol or glycerol residues c) beta-glucosidase Therefore, the exact composition of a defined medium is known. 11. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. a) Treponema B) False, Mass-produced microbial cells can be used as livestock feed. a) 3.0 4.6 15. Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. 6.8 - 7.2 b. View Answer, 17. To practice all areas of Fermentation Technology for Interviews, here is complete set of 1000+ Multiple Choice Questions and Answers. Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. B) False, Pasteurization is used to sterilize milk. a) Lactobacillus The Microbiology Society has a vision and mission around which we base our strategy. Report an issue. All Rights Reserved. Which among the following are microaerophilic bacteria? A. Fecal coliform bacteria are a subgroup of total coliform bacteria. The section contains multiple choice questions and answers on nutritional requirements, bacteriological media and physical conditions growth. Screening of Microorganisms: Primary and Secondary Techniques c) Binary fission Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? What does a viral DNA becomes after being associated with the bacterial chromosome? b) Biological assay Enrichment culture technique was developed by_________, 16. B. Thymol blue C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. A) True Incorporation of CaCO3 in medium is also used to__________. View Answer, 21. The screening is isolation and detection of microorganisms of interest. Microorganisms - Groups, Characteristics, Importance and Uses - VEDANTU b) Auxanographic technique Which of the following method is used for the isolation of mutants? 1. c) 2mm in diameter A. A) True (4) This may be accomplished by paper, thin layer, chromatographic technique. What is the approximate size of the bacterial cell? membranes of microorganisms. The Quizzes about Fecal Analysis (32 tests) - MedQuizzes c) an increase in the size of an individual organism View Answer, 49. Thank you so much for sharing. (Or show it to your microbiology professor, just for fun.) d) Fungi Prokaryotes are very flexible metabolically, so they are able to adjust their feeding to the available natural resources. b) coliforms Which of the following method is not used in isolation and screening of desired microorganisms? The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. c) hydrophobic barrier b) Antibiotic producers b) below 1 percent View Answer, 2. MCQ on Our Environment Question 9. (PDF) Mcqs in microbiology | Mohammed Bilal - Academia.edu Clarification: Hanging drop technique is used for motility testing of bacteria. 2011-2023 Sanfoundry. In this process the bacterium, which is a single cell, divides into two identical daughter cells. a) viral infection It is 50,000X magnified image of a bacterium. Required fields are marked *. (2) Chemical, physical and biological properties of a product are also determined during secondary screening. Performance and sterility testing of media lots should also be determined and a) anaerobic cells For which viral disease, vaccine has been recently developed through the use of tissue culture? View Answer, 8. E. coli is a sub-group of the fecal coliform group. MCQ's For Lab Technician And Technologists - Part 6 - Lab Tests Guide The section contains MCQs on spirochetes, negative rods, cocci, facultatively anaerobic gram, rickettsias and chlamydias, mycoplasmas, positive cocci and positive bacteria. Which was the first disease for which a chemotherapeutic agent was used? Which one of the following is called as the 'brewers yeast'. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? What is the fecal test that requires a 3-day specimen? Which of the following types of microorganisms is photosynthetic? View Answer, 3. C. Enrichment Culture technique View Answer, 43. ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. Which of the following method is not used in isolation and screening of desired microorganisms? b) The examination of the infection sites, c) They are prokaryotes in cellular organization. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. b) hexokinase d) Coliforms 1. B) False, Microbiology 17 immunization and immune Testi. other viruses are too dangerous to work with in a clinical lab setting. (2) It determines which microorganisms can produce a compound. 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. The following diagram represents ____________a) Plate with wormsb) Colonies of bacteria on a petri dishc) Onion root cells on a plated) Cheek cellsAnswer: bClarification: The following diagram represents colonies of bacteria on a petri dish. View Answer, 12. a) Small pox B. Auxanographic technique Clarification: Phenol Red plate is used to detect and isolate organic acid producers. b) irregular b) Streptomyces olivaceus Which of the following are important primary screening techniques? How do you isolate microorganisms in the air? c) Crick D. Indicator dye technique. 1. Who is considered the father of Western medicine? 1. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. 7. D) all of the above. 2. Who is considered the "father of Western medicine"? d) Pour plate b) hydrophilic barrier Diagnostic Microbiology - MCQs Flashcards | Quizlet a) Crowded plate technique d) Study of microscope Clarification: The Auxanographic technique is used for the detection and isolation of the organisms which are growth factor producers. Crowded plate technique Contact Us. and you must attribute OpenStax. d) appendaged bacteria A) True 43) Which of the following methods are the most common and routine culture methods performed in the microbiology lab for the proper isolation and identification of bacteria and fungi? [1] Infections are common both in community-acquired as well as hospital-acquired settings and treatment remains challenging to manage due to the emergence of multi-drug resistant strains such as MRSA (Methicillin-Resistant Staphylococcus aureus). Microbes are certainly ideal for biotechnology. A. d) cathode rays C. Enrichment Culture technique Biology Multiple Choice Questions on Microbes. Which of the following is NOT a criterion for the choice of an organism? It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. Which of the following foods is NOT made by fermentation? C) alcohol. The organic acid producers produce acid which changes the colour of media and is thus detected easily. Rapid Diagnostic Tests for Infectious Diseases Principles of Epidemiology: Lesson 5 Quiz|Self-Study Course SS1978|CDC citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. d) Indicator dye technique (PDF) Screening for Microbes View Answer, 25. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. A) organic acids. 45) What are the types of general characteristics that are important for the identification and classification of protozoa? 1. Methyl red The section contains questions and answers on diseases caused by staphylococcus, streptococcus, corynebacterium, aerobic and anaerobic gram, viruses containing single and double stranded dna. View Answer, 41. a) elongated The process is repeated several times until the requirement is met. In which of the following treatment involve oxidation of organic constituents of the wastewater? Which of the following statement is correct regarding primary screening________. b) Streptococcus lactis Clarification: Phenolphthalein has a pH range between 8.0 10.0. They are mainly of two types: Primary and Secondary Screening Primary Screening : The effective screening must in one or few steps which allow the discarding of many valueless microorganisms, while at the . d) an increase in the mass of an individual organism Screening of industrial microorganisms - SlideShare Some strains, however, can cause illness. D. Phenol red. 11. The objective of this study was to isolate, identify, and screen the potential antimicrobial-producing . Allow discarding of many valueless microbes. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? View Answer, 4. screening of microorganisms includes mcq 8. c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. d) Pasteur Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. a) Chemical and biological assay Chapter 2: Classification of Medically important Bacteria MCQs. Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. B) False, When in doubt, throw it out. Which of the following plate is used to detect and isolate organic acid producers? Answer: 1. View Answer, 31. 7. 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. Protozoa that eat other organisms are known as _______________ A food chain comprising birds, green plants, fish and man. c) holozoic c) Enrichment Culture technique C) sugar. Gram Staining - StatPearls - NCBI Bookshelf It is done by using paper, thin layer or other chromatographic techniques. A) retards growth of Staphylococcus aureus. Which of the following microorganism is eliminated in canned foods? 11 junio, 2022. D. Hanging Drop technique. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of _____________ screening of microorganisms includes mcq. The following diagram shows an adenovirus: ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. The colour of plate changes from red to yellow in the zone of organisms producing organic acid. Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. C lostridium perfringens is an obligate anaerobic bacteria that do not require oxygen to grow and thus it is not Microaerophilic, microaerophilic bacteria require low amounts of oxygen for growth. Microbiology Multiple Choice Questions and Answers (MCQs) Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? Which of the following was NOT a kingdom in Linnaeuss taxonomy? 7. b) Fungi c) AIDS C. Phenolphthalein Which of the following is a correct usage of binomial nomenclature? Which of the following is NOT a criterion for the choice of an organism? C. American Type Counter Collection 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? D) all of the above. b) Streak-plate (3) Attempt to synthesized secondary metabolites outside of their natural environment. This set of Fermentation Technology Interview Questions and Answers focuses on Isolation and Screening of Industrially Important Microbes. b) Syphilis 15. View Answer, 11. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes, (1) Detection and isolation of microorganisms that possess potentially interesting industrial application, (3) It helps in providing information regarding the product yield potentials of different isolates. c) Enrichment Culture technique OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. A BV test is done in a similar way as a pelvic exam or Pap smear. It includes the physical processes of screening, comminution, grit removal, and sedimentation. Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. Phagocytosis (article) | Foundation 2: Cells | Khan Academy Answer: A. Clarification: Screening is the use of highly selective procedures to allow the detection and isolation of only those microorganisms of interest from a large microbial population. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. He came with a lesion on the lower part of the left leg that according to him first appeared about a week before visiting the hospital. Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? Genetic engineering is also used to improve the biodegradation . Which shape of bacteria has been represented in the following diagram?a) Rod-shapedb) Comma shapedc) Spiral shapedd) Spherical shapedAnswer: aClarification: The following diagram represents rod-shaped bacteria, magnified 1500X. Answer: A 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. a) above 1 percent Which of the following method is not used in isolation and screening of desired microorganisms? Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? Each daughter cell is a clone of the parent cell. a) Crowded plate technique Which of the following dye is colourless at acidic pH and becomes red at basic pH? c) Robert Koch Microorganism Definition. b) Mesophile and psychrophile 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics?