View Answer, 10. D. Rose Bengal Agar plate. The principal microorganism for yogurt is ______________________ View Answer, 4. A) are essential to microbe function. 2. A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. D. Amino acid producers. A) True b) Viruses a) Leuconostoc mesenteroides The colour of plate changes from red to yellow in the zone of organisms producing organic acid. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . The section contains MCQs on diseases caused by fungi and protozoa, therapeutic drugs for fungal treatment and protozoan diseases. Which of the following method is not used in isolation and screening of desired microorganisms? ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. c) MacConkeys Agar plate Which of the following microorganism is eliminated in canned foods? the virus must be able to lyse red blood cells. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. A. Glycosylated hemoglobin: causes sickle cell anemia. Tyrocidines are more effective against ___________________ View Answer, 15. Answer: D c) Enrichment Culture technique 30 seconds. Antibiotic producing microorganisms can be detected by the method__________, 5. b) vitamins View Answer, 7. c) Enrichment Culture technique 3.0 4.6 [1] Often the first test performed, gram staining involves the use of crystal violet or methylene blue as the primary color. C) selecting microbial strains that lack a feedback system. Clarification: ATCC stands for American Type Culture Collection. d) Lophotrichous 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) False a) cellulose dehydrogenase Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. (3) Attempt to synthesized secondary metabolites outside of their natural environment. Q. Q.1: Screening of microorganisms includes . Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. c) Microviridae 1. C. Enrichment Culture technique Identification of bacteria by biochemical tests. a) Growth Factor producers Biology Multiple Choice Questions on Microbes. . b) Jenner Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. The process is repeated several times until the requirement is met. Thank you so much for sharing. C. 1000-fold 12. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. Who was the first to observe animalcules under the microscope? a) phospholipids 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. d) glucose residues Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? a) site of generation of protonmotive force View Answer, 21. c) Desulfotomaculum sp. b) Rhodospirillum 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. Question 6. a) Cephaleuros 15. c) Enrichment Culture technique b) Nitrosococcus oceanus c) Nitrosomonas europaea 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. (4) This may be accomplished by paper, thin layer, chromatographic technique. d) Pour plate b) Syphilis View Answer, 5. The section contains multiple choice questions and answers on bioenergetics principles, energy production by photosynthesis, anaerobic and aerobic processes. Except where otherwise noted, textbooks on this site A. A) True d) Phenol red Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? B) heat. C) new batches of microorganisms are screened for increased yield. other viruses are too dangerous to work with in a clinical lab setting. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. Prokaryotes can be found everywhere on our planet, even in the most extreme environments. c) American Type Counter Collection View Answer, 28. 12. d) Multiple fission A. b) Thymol blue In an ecosystem, herbivores represent. A. Fecal occult blood B. C. Enrichment Culture technique You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. 4. d) Coxiella burnetii [2] The term for organisms that retain the . a) Study of molecules that are visible to human eyes (4) Attempt to Stain microorganisms. 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. Performance and sterility testing of media lots should also be determined and 6. View Answer, 3. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. Identify bacteriophage. All microbes are harmful to humankind.a) Trueb) FalseAnswer: bClarification: Although microbes cause a large number of diseases in human beings, various animals and plants, but not all microbes are harmful. View Answer, 40. Lipopolysaccharide in cell walls is characteristic of? d) 6.4 8.0 6. 14. D. 6.4 8.0. a) American Type Culture Collection B) mass, controlled culture of microbes to synthesize products. uses 100 grams of glucose in a 300ml solution. The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. How do you isolate microorganisms in the air? False. C. 5 8 C. Enrichment Culture technique c) fecal streptococci How do you isolate microorganisms from the soil? Microbiology is the study of : 3. 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. b) Advanced treatment Sulphur can be utilized by bacteria in the a. consent of Rice University. A 19-year-old male living in a tropical region of India visited the hospital. The section contains MCQs on chemotherapy historical highlights, antibiotics and their actions, microbiological assay of antibiotics, antifungal, antiviral and antitumour antibiotics. d) Photosynthetic sulfur bacteria Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? c) Bacillus thuringiensis 9. Clarification: The pH range of Bromophenol blue is 3.0 4.6. Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single circular chromosome. D. Indicator dye technique. 4. B. Auxanographic technique View Answer, 15. Answer: C Creative Commons Attribution License Pathogen testing is used to identify pathogenic organisms in manufacturing environments, ingredients or finished products that could harm the consumer. Gram positive bacterial cell wall takes the stain of crystal violet and appears, BIOCHEMISTRY, BIOMEDICINE & PHARMACEUTICS, Classification and identification of microorganisms, Branched Chain Amino Acid Metabolism and Maple Syrup Urine Disease, drugs for the treatment of cardiovascular diseases, MEDICAL MICROBIOLOGY gastrointestinal tract, Nosocomial infection/ hospital acquired infections, Lipid Metabolism: MCQs (Cholesterol, Triglycerides, and Other Lipids), MCQs on Sterilization and Disinfection - Decontamination, aseptic processes in laboratory and hospitals, Carbohydrate Metabolism: MCQ on Glycolysis & Gluconeogenesis. b) Streak-plate d) appendaged bacteria 6.8 - 7.2 b. a) Shortest wavelength of visible light used Which is the secondary stage? d) Prototheca MCQ on Industrial Microbiology. Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of _____________ d) Candida milleri What is the average size of a microbe?a) Less than 1 mmb) More than 1 cmc) Less than 0.1 mmd) More than 0.1 mmAnswer: cClarification: Microbes are microorganisms which have a size less than 0.1 mm. c) 2.5 to 4 percent Which of the following bacteria is an endospore-forming bacteria that is also a common foodborne pathogen? 3. How to avoid the spreading of Microorganisms has been discussed. The organic acid producers produce acid which changes the colour of media and is thus detected easily. Penicillin causes inhibition of Mycoplasmas. Biotechnology, the practical application of microorganisms in making products for human use, is a relatively new science, begun since Pasteur's time. c) Lactobacilli Which of the following is the most accurate method for microbial assay of antibiotics? Here are 1000 MCQs on Microbiology (Chapterwise), The Characterization, Classification and Identification of Microorganisms, The Microscopic Examination of Microorganisms, The Morphology and Fine Structure of Bacteria, Pure Cultures and Cultural Characteristics, Microbial Metabolism : Utilization of Energy and Biosynthesis, The Control of Microorganisms by Physical & Chemical Agents, Antibiotics and Other Chemotherapeutic Agents, Microbiology of Soil & Aquatic Microbiology, Microbiology of Domestic Water and Wastewater, Microbiology of Food, Industrial Microbiology & Bacterial Genetics, Microbial Flora of the Healthy Human Host, Host-Microbe Interactions : The Process of Infection, Microbial Agents of Disease : Bacteria & Viruses, Microbial Agents of Disease : Fungi and Protozoa, Microbiology MCQ: Major Characteristics of Microorganisms, Microbiology MCQ: Microbial Classification, Microbiology MCQ: Transmission Electron Microscope and Scanning Electron Microscope, Microbiology MCQ: The 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Plasmodium divides by which of the following method most commonly? Answer: B Which of the following is NOT a criterion for the choice of an organism? Categories: . 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. Rhizobium bacteria. a) glycerol residues c) Binary fission The cell structure of gram positive and gram negative bacteria appear as the picture given below after the gram staining procedure, Gram positive bacteria Gram negative bacteria. C. Organic acid producers chipotle corporate phone number . View Answer, 29. B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. a) fats b) ribitol residues Which of the following is the source of Vitamin A.