microscopic with a fried egg shape. Dec 20, 2022 OpenStax. It is the organization which has the largest department of Research and Development. Water treatment typically requires three stages to make it potable from sewage. Binary fission begins when the DNA of the bacterium divides into two (replicates). Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. Screening includes primary screening and secondary screening. Identification of bacteria by biochemical tests. a) Treponema B) using small scale containers to concentrate production. C) inoculation, fermentation, downstream processing, removal of waste. Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. Cryptococcosis is a disease of ________________ Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? Answer: C 7. Methyl red (3) It provides information on whether the product formed by microorganisms is new or not. d) American Type Classifier and Collection Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. View Answer, 38. a) Cephaleuros View Answer, 13. 2. c) Cyanobacteria Allow discarding of many valueless microbes. A) heat below 100 oC. c) 2.5 to 4 percent b) irregular View Answer, 10. View Answer, 40. c) Peritrichous The screening is isolation and detection of microorganisms of interest. a) Chemical and biological assay Complex media are prepared using digests of microbial, animal, or . Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? Primary treatment removes material that will either float or readily settle out by gravity. Symptoms include cough and lung infection. It should have a fast rate of kill of micro-organisms. B) nutrients are continuously fed into the reactor and the product is siphoned off during the run. Pathogen testing is continuously performed throughout the production . Some of the frequently asked exam questions are as follows:-. Answer: A answer choices. a) Spread-plate A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. Which of the following plate is used to detect and isolate organic acid producers? C. Enrichment Culture technique 5. It is a non-profit organization and a key resource for medical research. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? Categories: . 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. View Answer, 34. Creative Commons Attribution License A) True False. The bacterium Staphylococcus aureus is which type of bacteria? View Answer, 11. b) Syphilis Crowded plate technique The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. You can also download the PDF of Microbiology MCQs by applying below. a) anaerobic cells The section contains MCQs on selective methods, pure cultures and cultural characteristics. a) Amphitrichous Glycolysis can occur in ___________ 7. 6. b) The examination of the infection sites, c) They are prokaryotes in cellular organization. In the following diagram, what does the question mark represent?a) Ciliab) Flagellac) Haird) PseudopodiaAnswer: b a) Bacillariophycophyta True. Which of the following dye is colourless at acidic pH and becomes red at basic pH? 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. Who is considered the father of Western medicine? Answer: 4. Tyrocidines are more effective against ___________________ Which of the following was NOT a kingdom in Linnaeuss taxonomy? A. 1. Vaccination was invented by ____________ You may refer to the lesson text whenever you are unsure of the answer. Clarification: ATCC stands for American Type Culture Collection. (1) Its a process for the detection and isolation of microorganisms of our interest. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. This quiz is designed to help you assess how well you have learned the content of this lesson. b) below 1 percent 4.0 SECONDARY SCREENING OF MICROORGANISMS . Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. d) Study of microscope c) Enrichment Culture technique D. Indicator dye technique. The production of substances in industrial microbiology occur in the sequence: Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? 2. Salting, as a preservative, Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? The process is repeated several times until the requirement is met. Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. A) True Which of the following enzyme removes the RNA primer with its 5-nuclease activity? C. Phenolphthalein 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. [2][3] S. aureus is found in the . C. Enrichment Culture technique What is the pH range of Bromophenol blue? a) Lactobacillus c) Desulfotomaculum sp. a) Neisseria gonorrhoeae. In this process desired microorganism is generally isolated from a natural environment like soil, which . During the test, You will take off your clothes below your waist. a) cellulose dehydrogenase a) parasitic c) hydrophobic barrier View Answer, 7. c) Chlorophycophyta D) removal of waste, inoculation, fermentation, downstream processing. d) Coliforms Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. a) plasmid a) Vibrio cholerae 11. What is the approximate size of the bacterial cell? (2) It determines which microorganisms can produce a compound. d) Coxiella burnetii 4. d) Primary treatment then you must include on every digital page view the following attribution: Use the information below to generate a citation. Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. View Answer, 18. a) Leuconostoc mesenteroides Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. The respiratory chain of bacteria is associated with the _____________ Wish you the best in your endeavor to learn and master Microbiology! OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. View Answer, 5. c) Study of organisms that are not visible to naked eyes chp 25 microbiology 211 mcq. 5. 9. d) Gram-positive bacteria The principal microorganism for yogurt is ______________________ B) inoculation, downstream processing, fermentation, removal of waste. c) 5 8 are not subject to the Creative Commons license and may not be reproduced without the prior and express written Genetic engineering is also used to improve the biodegradation . Who was the first to observe animalcules under the microscope? Question 6. c) parasitic infection Want to cite, share, or modify this book? 2. The microorganisms secrete the enzymes into their nutrient medium to make better use of it. A. c) Microviridae The process is repeated several times until the requirement is met. d) Antoni van Leeuwenhoek 1. B. Which of the following method is not used in isolation and screening of desired microorganisms? Secondary screening may be qualitative and quantitative in its approach. Cellulose is degraded to cellobiose by the enzyme __________________ Clarification: Hanging drop technique is used for motility testing of bacteria. Which of the following foods is NOT made by fermentation? Required fields are marked *. 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. a) 100-fold The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. Which among the following is not an ammonia-oxidizing bacteria? this would be absolutely amazing. False. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. 3. c) DNA polymerase I What is Microbiology? Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi . 4. View Answer, 49. Easy detection of the small percentage of useful microorganism. d) Cristispira Chapter 4: Clinical Virology MCQs. b) hexokinase Ans: The steps adopted in a typical sewage treatment plant are as given below: ADVERTISEMENTS: c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. View Answer. A) True a) viral infection d) Indicator dye technique Which of the following method is not used in isolation and screening of desired microorganisms? a) False 5. a) Methyl red View Answer, 20. b) Advanced treatment c) an increase in the size of an individual organism Biotechnology, the practical application of microorganisms in making products for human use, is a relatively new science, begun since Pasteur's time. MCQ on Our Environment Question 9. b) 8.0 10.0 Now that you have read Lesson 5 and have completed the exercises, you should be ready to take the self-assessment quiz. 6. Candidiasis is a fungal infection, skin infection, and mouth or vaginal infection that can occur due to the overgrowth of the fungus. b) Mesophile and psychrophile b) 0.5 to 1.0 micrometer in diameter Thank you so much for sharing. The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. 1. What is the name of the procedure performed under sterile conditions to eliminate 4. a) Small pox b) Killing pathogenic microorganisms c) Killing spores d) None of these answer-A 3. c) The optimum temperature for the growth of an organism must be above 50C are licensed under a, Unique Characteristics of Prokaryotic Cells, Unique Characteristics of Eukaryotic Cells, Prokaryote Habitats, Relationships, and Microbiomes, Nonproteobacteria Gram-Negative Bacteria and Phototrophic Bacteria, Isolation, Culture, and Identification of Viruses, Using Biochemistry to Identify Microorganisms, Other Environmental Conditions that Affect Growth, Using Microbiology to Discover the Secrets of Life, Structure and Function of Cellular Genomes, How Asexual Prokaryotes Achieve Genetic Diversity, Modern Applications of Microbial Genetics, Microbes and the Tools of Genetic Engineering, Visualizing and Characterizing DNA, RNA, and Protein, Whole Genome Methods and Pharmaceutical Applications of Genetic Engineering, Using Physical Methods to Control Microorganisms, Using Chemicals to Control Microorganisms, Testing the Effectiveness of Antiseptics and Disinfectants, History of Chemotherapy and Antimicrobial Discovery, Fundamentals of Antimicrobial Chemotherapy, Testing the Effectiveness of Antimicrobials, Current Strategies for Antimicrobial Discovery, Virulence Factors of Bacterial and Viral Pathogens, Virulence Factors of Eukaryotic Pathogens, Major Histocompatibility Complexes and Antigen-Presenting Cells, Laboratory Analysis of the Immune Response, Polyclonal and Monoclonal Antibody Production, Anatomy and Normal Microbiota of the Skin and Eyes, Bacterial Infections of the Skin and Eyes, Protozoan and Helminthic Infections of the Skin and Eyes, Anatomy and Normal Microbiota of the Respiratory Tract, Bacterial Infections of the Respiratory Tract, Viral Infections of the Respiratory Tract, Anatomy and Normal Microbiota of the Urogenital Tract, Bacterial Infections of the Urinary System, Bacterial Infections of the Reproductive System, Viral Infections of the Reproductive System, Fungal Infections of the Reproductive System, Protozoan Infections of the Urogenital System, Anatomy and Normal Microbiota of the Digestive System, Microbial Diseases of the Mouth and Oral Cavity, Bacterial Infections of the Gastrointestinal Tract, Viral Infections of the Gastrointestinal Tract, Protozoan Infections of the Gastrointestinal Tract, Helminthic Infections of the Gastrointestinal Tract, Circulatory and Lymphatic System Infections, Anatomy of the Circulatory and Lymphatic Systems, Bacterial Infections of the Circulatory and Lymphatic Systems, Viral Infections of the Circulatory and Lymphatic Systems, Parasitic Infections of the Circulatory and Lymphatic Systems, Fungal and Parasitic Diseases of the Nervous System, Fundamentals of Physics and Chemistry Important to Microbiology, Taxonomy of Clinically Relevant Microorganisms, https://openstax.org/books/microbiology/pages/1-introduction, https://openstax.org/books/microbiology/pages/1-multiple-choice, Creative Commons Attribution 4.0 International License. then you must include on every physical page the following attribution: If you are redistributing all or part of this book in a digital format, Butanol is obtained by fermenting molasses by. Antibiotic producing microorganisms can be detected by the method__________, 5. View Answer, 29. Which of the following method is used for the isolation of mutants? 4. 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. Growth Factor producers Sanfoundry Global Education & Learning Series Fermentation Technology. Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . A) True View Answer, 36. These are non-enveloped viruses with a double-stranded DNA genome. MCQ.8): In which of the following bacterial condition, fimbriae helps the bacteria to stick to the mucous membrane of the host? a) Leuconostoc citrovorum Everything you need to know about water and wastewater microbiology. 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? These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . b) False (retrieve https://www.learningsta.com, April 2021) 2.0 SCREENING . Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? Sugar fermentation test: Bacteria is grown in a sugar media. citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. b) an increase in number of cells pH, cations, thymidine or thymine, use of supplemented media). Engineering 2023 , FAQs Interview Questions, on 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers, Fermentation Technology Objective Questions, 300+ TOP MCQs on Database Screening and Screening by Nucleic Acid Hybridisation 1 and Answers, 300+ TOP MCQs on Database Screening and Screening by Nucleic Acid Hybridisation 2 and Answers, 250+ MCQs on Media for Industrial Fermentations Minerals, Growth Factors and Buffers and Answers, 250+ MCQs on Improvement of Industrial Microorganisms and Answers, 250+ TOP MCQs on Vibration Isolation and Transmissibility and Answers, 250+ TOP MCQs on Multiversion Schemes, Snapshot Isolation, 250+ TOP MCQs on Microbes in Industrial Products-3 and Answers, 250+ TOP MCQs on Microbes in Metal Containing Habitat and Answers, [12 Class Notes] MICROBES IN HUMAN WELFARE Biology CBSE, 250+ TOP MCQs on Microbes as Biofertilizers and Answers, 250+ TOP MCQs on Transaction Isolation Levels and Answers, 250+ TOP MCQs on Enzyme Extraction and Isolation Choice of Enzyme Sources and Answers, 250+ MCQs on Microbial Growth Kinetics Batch Culture and Answers, 200+ TOP CELL CULTURES and CHARACTERISTICS Interview Questions and Answers, 200+ TOP Microbiology Of Foods Interview Questions with Answers, 250+ TOP MCQs on Microbes in Industrial Products-2 and Answers, 250+ MCQs on Brewing Yeast Differentiation (Traditional Methods) and Answers, 250+ TOP MCQs on Microbes in Household Products-2 and Answers, 300+ TOP Cell Cultures & Characteristics Objective Questions and Answers, 300+ TOP Microbiology of Foods Objective Questions & Answers. Clarification: Auxanographic technique proceeds with 2-plate preparation. 9. 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. (2) Chemical, physical and biological properties of a product are also determined during secondary screening. 1. Definition: true bacteria; bacteria excluding the archaea. c) rod shaped The screening is isolation and detection of microorganisms of interest. a) Crowded plate technique d) Pasteur Contact Us. B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. a) Cyanobacteria, Fungi and Viruses Aims and objectives. Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. D) prevent mold. It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes Answer: A c) AIDS C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. d) electron beams B. Thymol blue The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. View Answer, 9. It is important to find and resolve the source of the contamination. A) are among the most widely used preservatives. Which of the following statements is correct regarding secondary screening________. screening of microorganisms includes mcqwarning signs for a deteriorating patient with covid 19 infection 2022.07.03 18:36 18:36 screening of microorganisms includes mcqshortest water tower in the world. d) Corynebacterium diphtheriae b) Ferdinand Cohn What is the pH range of Bromophenol blue? c) Mycobacterium tuberculosis 14. B. Auxanographic technique Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. Clarification: The pH range of Bromophenol blue is 3.0 4.6. c) base analog It is done by using paper, thin layer or other chromatographic techniques. Therefore, the exact composition of a defined medium is known. 1. B) False, Mass-produced microbial cells can be used as livestock feed. View Answer, 2. C) sugar. 25. a)Microaerophilic. d) Candida milleri This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. d) Amino acid producers Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. Secondary metabolites Clarification: Adenoviruses cause respiratory infections. 2. Who is considered the "father of Western medicine"? What is the fecal test that requires a 3-day specimen? Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. It belongs to the phthalein family that is employed as an acid-base indicator. d) hydrophobic barrier and site of generation of protonmotive force C) is used to prevent growth of halophiles. b) aerobic cells Home Class 12 Biology Objective Questions 250+ TOP MCQs on Microbes and Answers. Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? Viral hemagglutination assays only work with certain types of viruses because. Full-form of ATCC is _________ Staphylococcus aureus is a major bacterial human pathogen that causes a wide variety of clinical manifestations. B) 62.3oC for 30 minutes. Which of the following foods is NOT made by fermentation? d) The organism must be able to grow in an easily available nutrient medium b) Rabies It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. b) gamma rays This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. Which was the first disease for which a chemotherapeutic agent was used? B) inhibit germination of botulism spores. b) Acanthopeltis d) Phenol red Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. Crowded plate technique is used for screening of____________. A. a) Regeneration C) new batches of microorganisms are screened for increased yield. A) True However, if environmental contamination can enter the system, pathogens could get in too. [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). 8. Our mission is to improve educational access and learning for everyone. Here are 1000 MCQs on Microbiology (Chapterwise). C. Enrichment Culture technique Which of the following microorganism is eliminated in canned foods? Gram negative bacteria take the color of safranin stain and appear pink or red. Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. d) Rose Bengal Agar plate D. Rose Bengal Agar plate. A. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme Crowded plate technique Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. b) Atrichous bacteria. Which of the following is the most accurate method for microbial assay of antibiotics? It must be toxic to micro-organisms at concentrations well below the toxic thresholds of humans and higher animals so that it cannot negatively affect the animals or humans. Answer: B View Answer, 9. A. C) use of microbes in sewage and pollution control. Which shape of bacteria has been represented in the following diagram? D. Indicator dye technique. d) Measles Which of the following is a family of lambda phage viruses? c) Mumps 1. A test tube contains 9ml distilled water. Biology Multiple Choice Questions on Microbes. d) All of the mentioned Primary methods to prevent food spoilage do NOT include a) Condenser lens View Answer, 41. Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. 6. Microbes are only present in hot and humid areas.a) Trueb) FalseAnswer: bClarification: Microbes occur everywhere- in soil, water, air, inside our bodies and that of other animals and plants. 7. Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? Home Fermentation Technology Objective Questions 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers. The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. C. American Type Counter Collection Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? They block floating debris such as wood, rags, and other bulky objects that could clog pipes or pumps. a) True Which of the following is NOT a criterion for the choice of an organism? lauren conrad and stephen colletti /; 2. View Answer, 24. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. B) plasmolyzes bacteria and fungi. b) False Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. Clarification: The optimum temperature for the growth of an organism should be above 40C. and you must attribute OpenStax. Answer: A a) Final treatment The greatest resolution in light microscopy can be obtained with ___________ Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of _____________ Good work practices include, a. smelling and tasting chemicals . C) maintain a high osmotic pressure to kill microorganisms. 11. c) Enrichment Culture technique c) Chlorella The well-isolated colonies are antibiotic producers with the zone of inhibition. d) Indicator dye technique View Answer, 3. c) cytoplasm View Answer, 37. 5. d) Lophotrichous C) selecting microbial strains that lack a feedback system. 5. Q. Q.1: Screening of microorganisms includes . 11 junio, 2022. 38) All of the following statements are correct about the most common bacteriological media called sheep blood agar that is used in the microbiology laboratory, b) Used for the culture of common fastidious bacteria, c) It is used for the culture of hemolytic bacteria. B) False, Pasteurization is used to sterilize milk. Which isolation technique is most commonly used for colony isolation in the laboratory? 11. c) prophage B) mass, controlled culture of microbes to synthesize products. View Answer, 25. Microbiology is the study of living organisms that are not visible to the naked eyes.