C) are products that require additional processing before they can be packaged. c) The optimum temperature for the growth of an organism must be above 50C MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. b) aerobic cells Who is considered the father of Western medicine? 5. A. B) are by-products of metabolism that are not important to microbe function. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. 13. a) viral infection Rhizobium bacteria. C) is used to prevent growth of halophiles. B. Auxanographic technique C. MacConkeys Agar plate 7. During the test, You will take off your clothes below your waist. Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? c) An objective with minimum numerical aperture a) Nitrospina gracilis MCQ.8): In which of the following bacterial condition, fimbriae helps the bacteria to stick to the mucous membrane of the host? The organism must be able to produce a high yield of product How to avoid the spreading of Microorganisms has been discussed. A. 15. 3. The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. The bacterium Staphylococcus aureus is which type of bacteria? Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? All of the above. c) Chemical assay a) False a) Neisseria gonorrhoeae. The reason they are called microorganisms is that you can only see them when you use a microscope. View Answer, 15. Which one of the following organisms is least likely to cause this illness? Done in one or few steps. Place the gram of soil into the first tube with saline and SHAKE WELL. C. 5 8 Clarification: The pH range of Bromophenol blue is 3.0 4.6. A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. a) True It includes the physical processes of screening, comminution, grit removal, and sedimentation. membranes of microorganisms. Detrimental effects of microorganisms in food include, Fermentation of grains usually results in production of, During malting, barley and other grains are broken down by, Milk fermentation to produce cheese is done initially by inoculating with, Pickles and sauerkraut share a common inoculum, which is. The section contains multiple choice questions and answers on bioenergetics principles, energy production by photosynthesis, anaerobic and aerobic processes. It is 50,000X magnified image of a bacterium. Chapter 4: Clinical Virology MCQs. View Answer, 10. a) Crowded plate technique Chapter 2: Classification of Medically important Bacteria MCQs. View Answer, 22. b) Monotrichous c) Enrichment Culture technique C. Enrichment Culture technique It is a non-profit organization and a key resource for medical research. Microbes are certainly ideal for biotechnology. a) The organism must be genetically stable. d) Fungi D) all of the above. C. Enrichment Culture technique Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. a) Mesophile Set up a series of 1/10 dilutions: a. View Answer, 34. 13. c) UV light a) above 1 percent Prokaryotes are very flexible metabolically, so they are able to adjust their feeding to the available natural resources. D) prevent mold. The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. c) parasitic infection Which shape of bacteria has been represented in the following diagram? A) fermentation, downstream processing, removal of waste, inoculation. This quiz is designed to help you assess how well you have learned the content of this lesson. Microbes can live in highly acidic as well as an alkaline medium. In modern plants the screens are cleaned . Home Class 12 Biology Objective Questions 250+ TOP MCQs on Microbes and Answers. b) Streak-plate d) DNA polymerase II Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. b) Auxanographic technique Which of the following plate is used to detect and isolate organic acid producers? Which of the following microorganism produces dextran? Which of the following statements about food chain and energy . The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. Clarification: Adenoviruses cause respiratory infections. Complex media are prepared using digests of microbial, animal, or . True Clarification: Phenolphthalein has a pH range between 8.0 10.0. View Answer, 8. Except where otherwise noted, textbooks on this site Engineering 2023 , FAQs Interview Questions. d) Candida milleri 5. Screens are made of long, closely spaced, narrow metal bars. Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? 2. 6. Bioremediation of polluants utilizing biodegradation abilities of microorganisms include the natural attenuation, although it may be enhanced by engineered techniques, either by addition of selected microorganisms (bioaugmentation) or by biostimulation, where nutrients are added. b) Rhodospirillum d) Nitrosovibrio tenuis Primary treatment removes material that will either float or readily settle out by gravity. It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. What is the approximate size of the bacterial cell? In which of the following treatment involve oxidation of organic constituents of the wastewater? Which isolation technique is most effective? 5. Fermentation Technology Questions on Isolation and Screening of Industrially Important Microbes. It should not leave damage and odour. 3. Dec 20, 2022 OpenStax. a) Vibrio cholerae c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. The "flash method" or "high temperature short time" method exposes fluids to 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. d) Pasteur 25. a)Microaerophilic. b. not washing hands before and after lab . B. OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. 11 junio, 2022. Aims and objectives. c) Cyanobacteria a) Study of molecules that are visible to human eyes A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. A) substrates are added to the system all at once and runs until product is harvested. A) True 4.1: Prokaryote Habitats, Relationships, and Microbiomes. View Answer, 19. For this dilution, it may be said that the solution was diluted _______ a) Crowded plate technique 5. A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. A test tube contains 9ml distilled water. d) cellulase All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. 3. c) Enrichment Culture technique (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. 10. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. 11. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. Which of the following is the example of encapsulated gram-positive bacteria? Sulphur can be utilized by bacteria in the a. a) plasmid Contact Us. Automatic Type Counter & Classifier D. 2-fold. 4. Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? During their metabolism, microbes produce chemicals, some of which are used by human beings. pH, cations, thymidine or thymine, use of supplemented media). It is the organization which has the largest department of Research and Development. Which of the following yeast can be used to produce microbial protein? c) Mycobacterium tuberculosis 2. b) Streptococcus lactis D. Indicator dye technique. Through primary screening only few or many microorganism that produce a industrially . b) Streptomyces olivaceus View Answer, 21. b) Magnifying lens Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. a) Shortest wavelength of visible light used (3) It provides information on whether the product formed by microorganisms is new or not. (2) Chemical, physical and biological properties of a product are also determined during secondary screening. B) False, HACCP Hazard Analysis and Critical Control Point uses random samples for quality control of the food supply. d) Hanging Drop technique c) Desulfotomaculum sp. 3. Which of the following is not a subfield of microbiology? Microorganisms are minute, unicellular organisms that aren't visible to the naked eye. Sulphates are reduced to hydrogen sulphide by _____________________ [2][3] S. aureus is found in the . d) Physical assay 3. A. Phenol red plate For this dilution, it may be said that the solution was diluted _______ Answer: A The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. 2. a) Treponema It is further followed by secondary screening, to check the capabilities and gain information about these organisms. View Answer, 40. 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. microscopic with a fried egg shape. c) 2.5 to 4 percent 3. c) cytoplasm 9. 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? 2. Which of the following are true for cytoplasmic membrane? Biology Multiple Choice Questions on Microbes. Which of the following method is not used in isolation and screening of desired microorganisms? d) Pedoviridae Candidiasis is a fungal infection, skin infection, and mouth or vaginal infection that can occur due to the overgrowth of the fungus. Clarification: The Auxanographic technique is used for the detection and isolation of the organisms which are growth factor producers. 4. View Answer, 38. However, if environmental contamination can enter the system, pathogens could get in too. b) Automatic Type Counter & Classifier Measles is a disease caused by a virus, it is spread via respiratory droplets. Which of the following are the growth morphology of the protozoa? b) Atrichous bacteria. c) Saccharomyces cerevisiae 1. d) Amino acid producers Answer: B 13. Easy detection of the small percentage of useful microorganism. The screening is isolation and detection of microorganisms of interest. b) hexokinase Which of the following is a type of fungal microorganism? Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. a) Streptomyces sp. is affected by the patient's food intake on the day of testing. Air Sampling. B) False, Yeast cells prefer aerobic conditions to multiply in number. Which of the following types of mutants can be isolated using the replica plate technique? You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. d) 5 percent c) carbohydrates a) changes in the total population 6. b) Auxanographic technique Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. a) Growth Factor producers b) cellulose It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. a) 100-fold c) chitin (1) It is useful in sorting microorganisms that have real commercial value. d) Lactobacillus acidophilus c) Crick Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? Chemical preservatives do NOT include 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. 5.6 - 8.2 form of c. 3.0 - 6.0 d. 8.0 - 14.0 a. Organic compounds b. Inorganic compounds 14. It will immensely help anyone trying to crack an exam or an interview. Sanfoundry Global Education & Learning Series Fermentation Technology. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. b) Corticoviridae Incorporation of CaCO3 in medium is also used to__________. A) True Which of the following plate is used to detect and isolate organic acid producers? 14. Full-form of ATCC is _________. View Answer, 4. 8. View Answer, 4. B. Auxanographic technique c) magnetic fields It changes from yellow at pH 3.0 to blue-violet at pH 4.6. Required fields are marked *. Microbiology is the study of living organisms that are not visible to the naked eyes. 2011-2023 Sanfoundry. 30 seconds. [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). Wash your hands with soap and water for at least 20 seconds. D) are harvested during the exponential phase of growth. 4.0 SECONDARY SCREENING OF MICROORGANISMS . Identification of bacteria by biochemical tests. It is done by using paper, thin layer or other chromatographic techniques. 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. lauren conrad and stephen colletti /; 2. 4. Gram negative bacteria take the color of safranin stain and appear pink or red. C) 72 oC for 15 seconds. View Answer, 48. In batch fermentation, Which of the following method is not used in isolation and screening of desired microorganisms? b) Thymol blue Good work practices include, a. smelling and tasting chemicals . Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. In screening studies, it is recommended to use non-sterile soil, test different inoculation methods and different abiotic stresses, and even select microorganisms from plants under abiotic stress. Which of the following dye is colourless at acidic pH and becomes red at basic pH? b) 0.5 to 1.0 micrometer in diameter 2. b) Acanthopeltis Acridine orange is which type of mutagen? b) Clostridium botulinum View Answer, 29. False. 4. Which of the following method proceeds with 2-plate preparation? 1. Clarification: The Antibiotic producers show the zone of inhibition. C) use of microbes in sewage and pollution control. Has two nuclei C. Forms cysts D. Has a sucking disc E. Survives well in ordinary water, even when this is hot or contains chlorine or detergents, Flagellate parasite is the cause of vulvovaginitis in women in . 14. This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. View Answer, 5. d) bacterial infection b) an increase in number of cells D) A and C . 7. Who was the first to observe animalcules under the microscope? The following diagram shows an adenovirus: ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. C. Enrichment Culture technique 6. B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. View Answer, 5. In this process the bacterium, which is a single cell, divides into two identical daughter cells. Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. A. Fecal occult blood B. chipotle corporate phone number . Children are more susceptible to this disease. Primary methods to prevent food spoilage do NOT include A 7 year old girl developed a sore throat and fever for 2 days. d) an increase in the mass of an individual organism View Answer, 45. b) irregular a) American Type Culture Collection This set of Fermentation Technology Interview Questions and Answers focuses on Isolation and Screening of Industrially Important Microbes. 1g of soil is added to that test tube and the soil is allowed to settle down. The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. b) cell wall D. Indicator dye technique. A. b) plaque View Answer, 26. (3) Attempt to synthesized secondary metabolites outside of their natural environment. The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. Answer: B Butanol is obtained by fermenting molasses by. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? Some strains, however, can cause illness. d) Indicator dye technique c) Bacillus thuringiensis 2011-2023 Sanfoundry. 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.

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