Prokaryotes can be found everywhere on our planet, even in the most extreme environments. Which among the following are microaerophilic bacteria? There are various microorganisms types like bacteria, fungi, archaea, or protists. All of the above. Which of the following is the source of Vitamin A. The microorganisms from lakes and rivers can grow at a salt concentration of _________ d) cellulase screening of microorganisms includes mcq; screening of microorganisms includes mcq. A) True A 7 year old girl developed a sore throat and fever for 2 days. Which shape of bacteria has been represented in the following diagram? 5. B) inoculation, downstream processing, fermentation, removal of waste. A. Crowded plate technique Auxanography technique is employed for detecting microorganisms able to produce__________. b) Clostridium botulinum b) Gram-positive organisms 10. D. Hanging Drop technique. A test tube contains 9ml distilled water. 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It is done by using paper, thin layer or other chromatographic techniques. 7. 4.0 SECONDARY SCREENING OF MICROORGANISMS . Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. a. Streptococcus pyogens b. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. Secondary screening may be qualitative and quantitative in its approach. Which of the following is a prokaryotic microorganism? A) manipulating the growth environment. C) selecting microbial strains that lack a feedback system. During the test, You will take off your clothes below your waist. Some strains, however, can cause illness. Which of the following are produced by microorganisms? Which of the following statements is correct regarding secondary screening________. b) RNA polymerase A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. Salting, as a preservative, 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. c) Mycobacterium tuberculosis You can also prevent infections through: Hand-washing. B. Auxanographic technique a) Crowded plate technique C) are products that require additional processing before they can be packaged. c) Phenolphthalein A) True View Answer, 4. Sugar fermentation test: Bacteria is grown in a sugar media. b) Ferdinand Cohn b) Syphilis 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. View Answer, 44. D) starch. What is the pH range of Bromophenol blue? b) teichoic acid Prokaryotes are unicellular microorganisms whose cells have no nucleus. b) hydrophilic barrier 11. Biology Multiple Choice Questions on Microbes. 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. Which of the following method is not used in isolation and screening of desired microorganisms? B. Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. View Answer, 14. 2. These are non-enveloped viruses with a double-stranded DNA genome. C. Enrichment Culture technique b) True Required fields are marked *. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. The screening is isolation and detection of microorganisms of interest. View Answer, 43. In modern plants the screens are cleaned . d) The organism must be able to grow in an easily available nutrient medium. a) Cyanobacteria, Fungi and Viruses View Answer, 28. d) chitin, cellulose, or hemicellulose b) Budding The section contains multiple choice questions and answers on morphology, reproduction, physiology and fungi cultivation, fungi classification and special interest. B) plasmolyzes bacteria and fungi. Clarification: ATCC stands for American Type Culture Collection. d) DNA polymerase II Complex media are prepared using digests of microbial, animal, or . d) 2 micrometer in diameter B. Auxanographic technique 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. c) American Type Counter Collection Clarification: Adenoviruses cause respiratory infections. Automatic Type Counter & Classifier d) mitochondrial membrane c) Enrichment Culture technique This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. 5. 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. screening of microorganisms includes mcq. 8. answer choices. It belongs to the phthalein family that is employed as an acid-base indicator. The act of phagocytizing pathogenic or foreign particles allows cells of the immune system to know what they are fighting against. b) Killing pathogenic microorganisms c) Killing spores d) None of these answer-A 3. c) Enrichment Culture technique 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. For which viral disease, vaccine has been recently developed through the use of tissue culture? Glycosylated hemoglobin: causes sickle cell anemia. The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. Secondary screening may be qualitative and quantitative in its approach. The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. (retrieve https://www.learningsta.com, April 2021) 2.0 SCREENING . The principal microorganism for yogurt is ______________________ Binary fission begins when the DNA of the bacterium divides into two (replicates). c. confining long hair and loose clothing . Crowded plate technique Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. Measles is a disease caused by a virus, it is spread via respiratory droplets. Full-form of ATCC is _________ 2011-2023 Sanfoundry. b) coliforms 4. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. Symptoms include cough and lung infection. d) Measles The bacterium Staphylococcus aureus is which type of bacteria? a) x-rays OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. A) True Clarification: Phenol Red plate is used to detect and isolate organic acid producers. View Answer, 38. Secondary screening can give information about (1) The genetic instability in microbial cultures (2) Number of products produced in a single fermentation (3) The structure of the product (4) All of the above. A. What is required for proper isolation of microorganisms? What is required for proper isolation of microorganisms? C. Enrichment Culture technique b) vitamins b) Streptococcus lactis a) Crowded plate technique 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. 7. d) Antoni van Leeuwenhoek Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. 1g of soil is added to that test tube and the soil is allowed to settle down. Answer: B View Answer, 9. 11. Which of the following plate is used to detect and isolate organic acid producers? View Answer, 13. 2. 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. Antibiotic producers b) Auxanographic technique B) are by-products of metabolism that are not important to microbe function. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes 6. A routine GTT: is three hours long. The section contains multiple choice questions and answers on nutritional requirements, bacteriological media and physical conditions growth. c) DNA polymerase I Your health care provider will insert a special tool called a speculum into your vagina. b) Fermented dairy products 2. View Answer, 16. c) Bacillus thuringiensis b) 8.0 10.0 5. 10-fold Which of the following was NOT a kingdom in Linnaeuss taxonomy? View Answer, 6. a) Leuconostoc mesenteroides c) AIDS C) 72 oC for 15 seconds. 8.0 10.0 30 seconds. 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. 4. Which of the following dye is colourless at acidic pH and becomes red at basic pH? Note when energy and additional compounds are necessary for any of these mechanisms to operate. B) False, Yeast cells prefer aerobic conditions to multiply in number. It is the organization which has the largest department of Research and Development. View Answer, 46. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. c) 2.5 to 4 percent Viral hemagglutination assays only work with certain types of viruses because. Which of the following are the growth morphology of the protozoa? Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? Vaccination was invented by ____________ Sanfoundry Global Education & Learning Series Fermentation Technology. d) intercalating agents d) Bacillus polymyxa 8. d) 6.4 8.0 D) exposure. 2. B. c) Gram-negative bacteria d) Pour plate 16) A bacteriological stain also known as the differential stain is used for the identification of acid-fast organisms, Which of the following metabolic property differentiate the pink-colored colonies of. 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. a) Edwin John Butler c) Nitrosomonas europaea A. d) hydrophobic barrier and site of generation of protonmotive force True. c) Objective lens Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. Rickettsia species are carried by. d) Prototheca Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? Indeed, until Anton von Leeuwenhoek invented . The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . View Answer, 26. 10. Prokaryotes are very flexible metabolically, so they are able to adjust their feeding to the available natural resources. 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, We recommend using a Which of the following are important primary screening techniques? A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. Easy detection of the small percentage of useful microorganism. 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