True 3.0 4.6 A. B. 12. 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? View Answer, 3. Crowded plate technique The organic acid producers produce acid which changes the colour of media and is thus detected easily. b) Antibiotic producers 8. b) an increase in number of cells Sugar fermentation test: Bacteria is grown in a sugar media. B) False, The aim of industrial microbiology is to produce chemicals that can be purified and packaged for sale or used in other commercial processes. then you must include on every digital page view the following attribution: Use the information below to generate a citation. a) Nitrospina gracilis b) The organism must be able to produce a high yield of product. are not subject to the Creative Commons license and may not be reproduced without the prior and express written ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. b) irregular a) Alcoholic beverages C. American Type Counter Collection The act of phagocytizing pathogenic or foreign particles allows cells of the immune system to know what they are fighting against. b) Longest wavelength of visible light used d) hydrophobic barrier and site of generation of protonmotive force Crowded plate technique A) True True. Which of the following dye is colourless at acidic pH and becomes red at basic pH? A. Primary treatment removes material that will either float or readily settle out by gravity. It is the organization which has the largest department of Research and Development. a) Crowded plate technique D) exposure. Yeast cells are good source of. uses 50 grams of glucose in a 500ml solution. It is further followed by secondary screening, to check the capabilities and gain information about these organisms. Which among the following group of microorganisms are found in the ducts of cows mammary glands? Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. A. milk, meat, green vegetables, fruits, etc.) What is Microbiology? Which of the following is not a subfield of microbiology? A. View Answer, 27. c) cytoplasm a) S mallpox It is important to find and resolve the source of the contamination. Microbiology is the study of living organisms that are not visible to the naked eyes. c) neither aerobic and anaerobic cells c) Binary fission Which of the following method is not used in isolation and screening of desired microorganisms? b) mutualistic 12. 1. What is high throughput screening used for? [2] The term for organisms that retain the . B. It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. a) anaerobic cells YB STUDY is an Indias largest Online learning website offers learning for classes 1 to 12 and competitive exams like NEET, JEE, Olympiads, NTSE, KVPY, State boards etc. View Answer, 15. 6. C) new batches of microorganisms are screened for increased yield. You can also prevent infections through: Hand-washing. d) Indicator dye technique Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? 13. View Answer, 32. Which among the following are microaerophilic bacteria? b) Auxanographic technique Clarification: The optimum temperature for the growth of an organism should be above 40C. _______ are the agents that act as carriers of a pathogen and spread diseases. b) Gram-positive organisms Juli 2022 A 19-year-old male living in a tropical region of India visited the hospital. c) Enrichment Culture technique All Rights Reserved. Methyl red It belongs to the phthalein family that is employed as an acid-base indicator. Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. View Answer, 14. (4) Attempt to Stain microorganisms. d) saprophytic Gram negative bacteria take the color of safranin stain and appear pink or red. The process is repeated several times until the requirement is met. Which isolation technique is most commonly used for colony isolation in the laboratory? B) nutrients are continuously fed into the reactor and the product is siphoned off during the run. Which of the following foods is NOT made by fermentation? 8. Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. In an ecosystem, herbivores represent. 3. View Answer, 43. Staphylococcus aureus is a major bacterial human pathogen that causes a wide variety of clinical manifestations. the virus must not be able to lyse red blood cells. 10. B) inhibit germination of botulism spores. d) All of the mentioned In modern plants the screens are cleaned . 13. Note when energy and additional compounds are necessary for any of these mechanisms to operate. Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. Which of the following method proceeds with 2-plate preparation? 6. View Answer, 29. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. D. Amino acid producers. Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. Chemical preservatives do NOT include 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. 1. 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. 4. Which of the following is a family of lambda phage viruses? b) Thymol blue Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi . Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. 4. The reason they are called microorganisms is that you can only see them when you use a microscope. screening of microorganisms includes mcq. View Answer, 31. Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a c) holozoic c) Objective lens The methods for isolation and screening are a crowded plate, auxanography, enrichment culture and use of indicator dyes. Indeed, until Anton von Leeuwenhoek invented . Creative Commons Attribution License 4. 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. A) retards growth of Staphylococcus aureus. 44) Which of the following microorganisms can grow only as strict intracellular parasites? C) inoculation, fermentation, downstream processing, removal of waste. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. C. Phenolphthalein D) removal of waste, inoculation, fermentation, downstream processing. d) Coliform bacteria. 4. a) fats D. 6.4 8.0. View Answer, 50. 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. 9. d) Cristispira d) 2-fold Secondary screening can give information about, (1) The genetic instability in microbial cultures, (2) Number of products produced in a single fermentation, 8. b) Corticoviridae d) The organism must be able to grow in an easily available nutrient medium The Society's role is to help unlock and harness . What is required for proper isolation of microorganisms? Which of the following bacteria is an endospore-forming bacteria that is also a common foodborne pathogen? It includes the physical processes of screening, comminution, grit removal, and sedimentation. a) Chemical and biological assay The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme Biology Multiple Choice Questions on Microbes. 1999-2023, Rice University. The following diagram shows an adenovirus: ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. 9. View Answer, 2. Who is known as the father of Microbiology? c) base analog A) True A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. The science of using living systems to benefit humankind is called biotechnology.Technically speaking, the domestication of plants and animals through farming and breeding practices is a type of biotechnology. In this process desired microorganism is generally isolated from a natural environment like soil, which . Who was the first to observe animalcules under the microscope? c) Streptococci. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . Several microbes are useful to humans in diverse ways like in household products, industrial products, agricultural products, etc. Which of the following is NOT a criterion for the choice of an organism? d) Rose Bengal Agar plate False. Which of the following plate is used to detect and isolate organic acid producers? Categories: . (1) Its a process for the detection and isolation of microorganisms of our interest. Vaccination was invented by ____________ 5. Answer: 1. d) electron beams 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? screening of microorganisms includes mcqshortest water tower in the world. C) selecting microbial strains that lack a feedback system. It is done by using paper, thin layer or other chromatographic techniques. 10. 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. Microbiology MCQ. The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. 2. C. Enrichment Culture technique The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. View Answer, 12. C. The optimum temperature for the growth of an organism must be above 50C It should have a fast rate of kill of micro-organisms. Give the steps of typical sewage treatment plant are as given below. Salting, as a preservative, b) 8.0 10.0 9. c) Study of organisms that are not visible to naked eyes Which one of the following is called as the 'brewers yeast'. 2. b) Ferdinand Cohn D. The organism must be able to grow in an easily available nutrient medium. The screening is isolation and detection of microorganisms of interest. d) cathode rays a) DNA polymerase III c) parasitic infection This quiz is designed to help you assess how well you have learned the content of this lesson. Answer: D Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. [1] Often the first test performed, gram staining involves the use of crystal violet or methylene blue as the primary color. View Answer, 20. b) Acanthopeltis You may refer to the lesson text whenever you are unsure of the answer. Crowded plate technique a) Edwin John Butler View Answer, 25. It is used to reduce the dense culture of cells to usable concentration. View Answer, 9. For which viral disease, vaccine has been recently developed through the use of tissue culture? c) Cyanobacteria Which of the following types of mutants can be isolated using the replica plate technique? Answer: B a) Leuconostoc citrovorum The section contains multiple choice questions and answers on morphology, reproduction, physiology and fungi cultivation, fungi classification and special interest. In batch fermentation, In this process the bacterium, which is a single cell, divides into two identical daughter cells. 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. Microbiology is the study of : 3. Candidiasis is a fungal infection, skin infection, and mouth or vaginal infection that can occur due to the overgrowth of the fungus. (3) It provides information on whether the product formed by microorganisms is new or not. 5. Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. E. coli is a sub-group of the fecal coliform group. C) are products that require additional processing before they can be packaged.