b) Streak-plate Which of the following method is used for the isolation of mutants? View Answer, 13. 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? b) hexokinase c) Peritrichous Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? 11. In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms? 44) Which of the following microorganisms can grow only as strict intracellular parasites? 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. It is 50,000X magnified image of a bacterium. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? D) removal of waste, inoculation, fermentation, downstream processing. Microbiology MCQ. 15. d) All of the mentioned In this process the bacterium, which is a single cell, divides into two identical daughter cells. B. Auxanographic technique d) Measles Cellulose is degraded to cellobiose by the enzyme __________________ True. Our Environment Class 10 MCQ Question 6. A) True View Answer, 11. a) Regeneration B. A) True The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme 4.1: Prokaryote Habitats, Relationships, and Microbiomes. d) Pedoviridae Types of pathogens include specific bacteria strains, viruses, fungi, or parasites that can cause illness in its host. Except where otherwise noted, textbooks on this site citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. Which among the following is a pathogenic algae for humans? C. The optimum temperature for the growth of an organism must be above 50C The section contains MCQs on spirochetes, negative rods, cocci, facultatively anaerobic gram, rickettsias and chlamydias, mycoplasmas, positive cocci and positive bacteria. Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. D) are harvested during the exponential phase of growth. 3. 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. Which of the following are produced by microorganisms? Sanfoundry Global Education & Learning Series Fermentation Technology. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? We recommend using a C. 5 8 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 . The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. Chapter 3: Classification of Viruses MCQs. Plasmodium divides by which of the following method most commonly? Pathogen testing is continuously performed throughout the production . You can also prevent infections through: Hand-washing. 1. d) intercalating agents A test tube contains 9ml distilled water. View Answer, 28. Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. View Answer, 49. View Answer, 39. Which of the following microorganism is eliminated in canned foods? Lipopolysaccharide in cell walls is characteristic of? Answer: 4. This is one of the widely used methods and more important. a) Watson c) Robert Koch Gram negative bacteria take the color of safranin stain and appear pink or red. B) False, Microbiology 17 immunization and immune Testi. Growth Factor producers c) Enrichment Culture technique b) Gram-positive organisms d) Phenol red Which of the following plate is used to detect and isolate organic acid producers? 1. A. 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. b) Biological assay It changes from yellow at pH 3.0 to blue-violet at pH 4.6. b) Auxanographic technique a) Cyanobacteria, Fungi and Viruses Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? D) starch. 14. d) Fungi Answer: B What are the methods of isolating the pure culture of microorganisms? View Answer, 4. B. a) Phenol red plate Good work practices include, a. smelling and tasting chemicals . d) Indicator dye technique Microbes are certainly ideal for biotechnology. 4. Avoid contaminated food and water. Identification of bacteria by biochemical tests. Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. C) is used to prevent growth of halophiles. Answer: D d) DNA polymerase II Clarification: Auxanographic technique proceeds with 2-plate preparation. 3. Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. Chrysolaminarin is the reserved food of ___________________ Cryptococcosis is a disease of ________________ 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. a) Cephaleuros c) Spirochaeta 7. Which of the following dye is colourless at acidic pH and becomes red at basic pH? C. Enrichment Culture technique D. Amino acid producers. 2011-2023 Sanfoundry. Which among the following are Spirochetes? b) light waves View Answer, 8. 13. The objective of this study was to isolate, identify, and screen the potential antimicrobial-producing . Self-Assessment Quiz. 5. 6. Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. MCQ.9):Which bacteria have flagella of amphitrichous type means the flagellum are present at both the sides? c) cytoplasm b) an increase in number of cells Answer: C a) Treponema C. 1000-fold The Microbiology Society has a vision and mission around which we base our strategy. 1. c) Binary fission B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. d) American Type Classifier and Collection A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. b) The organism must be able to produce a high yield of product. Which isolation technique is most effective? 9. 45) What are the types of general characteristics that are important for the identification and classification of protozoa? b) True Enrichment culture technique was developed by_________, 16. The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. Which shape of bacteria has been represented in the following diagram? B) False, Mass-produced microbial cells can be used as livestock feed. Here are 1000 MCQs on Microbiology (Chapterwise). Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. Secondary screening may be qualitative and quantitative in its approach. Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? Which shape of bacteria has been shown in the following diagram?a) Rod-shapedb) Comma shapedc) Spiral shapedd) Spherical shapedAnswer: dClarification: The following diagram represents spherical shaped bacteria, magnified 1500X. C. Enrichment Culture technique c) Desulfotomaculum sp. View Answer, 2. Who is known as the father of Microbiology? It is further followed by secondary screening, to check the capabilities and gain information about these organisms. d) cellulase 5. It should have a fast rate of kill of micro-organisms. c) ribitol or glycerol residues Screens are made of long, closely spaced, narrow metal bars. B. Thymol blue b) Potato Dextrose Agar plate Tyrocidines are more effective against ___________________ a) cytoplasmic membrane View Answer. 5. View Answer, 47. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. Primary methods to prevent food spoilage do NOT include d) The organism must be able to grow in an easily available nutrient medium 10. View Answer, 12. Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. It is done by using paper, thin layer or other chromatographic techniques. b) Microbacteria b) Streptomyces olivaceus b) mutualistic Nitrates maintain the red color of preserved meats and a) Algae Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. D. Indicator dye technique. c) The optimum temperature for the growth of an organism must be above 50C a) Study of molecules that are visible to human eyes View Answer. 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This set of Fermentation Technology Interview Questions and Answers focuses on Isolation and Screening of Industrially Important Microbes. Answer: 4. 7. 4. 5. Incorporation of CaCO3 in medium is also used to__________. Which is the secondary stage? 12. a) Shortest wavelength of visible light used 100-fold a) Growth Factor producers microscopic with a fried egg shape. Clarification: The pH range of Bromophenol blue is 3.0 4.6. A. b) Advanced treatment D) small-scale production is used to synthesize product. a) The organism must be genetically stable 4. MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. Multiple Choice. c) MacConkeys Agar plate B. Easy detection of the small percentage of useful microorganism. False. a) DNA polymerase III Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? B. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. View Answer, 3. Screening includes primary screening and secondary screening. C. MacConkeys Agar plate 6.8 - 7.2 b. 5.6 - 8.2 form of c. 3.0 - 6.0 d. 8.0 - 14.0 a. Organic compounds b. Inorganic compounds 14. B) False, When in doubt, throw it out. a) Small pox b) Auxanographic technique c) Mumps b) Auxanographic technique Which of the following morphological characteristics is an important identification characteristic of. View Answer, 20. View Answer, 36. Crowded plate technique Definition: true bacteria; bacteria excluding the archaea. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. b) Streptococcus lactis c) The optimum temperature for the growth of an organism must be above 50C. Crowded plate technique is used for screening of____________. Trophic level in an ecosystem represents. View Answer, 21. Has three to five flagella at the posterior end B.
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