d) Coxiella burnetii 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. Screening includes primary screening and secondary screening. d) 5 percent c) beta-glucosidase View Answer, 49. d) intercalating agents c) Gram-negative bacteria A. Therefore, the exact composition of a defined medium is known. D) starch. c) Lactobacilli citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. d) Indicator dye technique Clarification: The pH range of Bromophenol blue is 3.0 4.6. B. False. Water treatment typically requires three stages to make it potable from sewage. View Answer, 23. c) 2mm in diameter What is the approximate size of the bacterial cell? 4.1: Prokaryote Habitats, Relationships, and Microbiomes. A) True Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a 13. View Answer, 4. What are the methods of isolating the pure culture of microorganisms? b) Treponema pallidum The section contains questions and answers on control fundamentals, physical agents, chemical agents characteristics, antimicrobial agents groups and antimicrobial chemical agents evaluation. A) are among the most widely used preservatives. Answer: B a) viruses Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. [2][3] S. aureus is found in the . A) fermentation, downstream processing, removal of waste, inoculation. Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi . c) Mumps B) inoculation, downstream processing, fermentation, removal of waste. b) Budding 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. 2. It is a non-profit organization and a key resource for medical research. Contact Us. However, in a contemporary sense, we associate biotechnology with the direct alteration of an organism's genetics to achieve desirable traits through the process of genetic engineering. the virus must be able to cross-link red blood cells directly. Give the steps of typical sewage treatment plant are as given below. 6. answer choices. Plasmodium divides by which of the following method most commonly? The screening is isolation and detection of microorganisms of interest. Which was the first disease for which a chemotherapeutic agent was used? Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. a) Leuconostoc mesenteroides View Answer, 48. Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. B. 15. 4. If you are redistributing all or part of this book in a print format, (2) Chemical, physical and biological properties of a product are also determined during secondary screening. The principal microorganism for yogurt is ______________________ Glycosylated hemoglobin: causes sickle cell anemia. B) False, HACCP Hazard Analysis and Critical Control Point uses random samples for quality control of the food supply. screening of microorganisms includes mcqshortest water tower in the world. It is important to find and resolve the source of the contamination. uses 50 grams of glucose in a 500ml solution. d) DNA polymerase II View Answer, 31. b) Auxanographic technique Bacteria having clusters of flagella at both poles of cells are known as? 3. Answer: A. 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. 2. A BV test is done in a similar way as a pelvic exam or Pap smear. Which of the following plate is used to detect and isolate organic acid producers? b) Nitrosococcus oceanus c) Streptococcus thermophilus Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. a) Edwin John Butler c) an increase in the size of an individual organism View Answer, 10. B. Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. a) S mallpox c) Bacillus thuringiensis B. Auxanographic technique 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. 2011-2023 Sanfoundry. Clarification: The optimum temperature for the growth of an organism should be above 40C. Which of the following is NOT a criterion for the choice of an organism? Rhizobium bacteria. Which of the following is the most accurate method for microbial assay of antibiotics? Prokaryotes are very flexible metabolically, so they are able to adjust their feeding to the available natural resources. b) RNA polymerase a) False 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. d) Indicator dye technique b) transposons Crowded plate technique Which of the following are important primary screening techniques? Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. c) Mycobacterium tuberculosis microscopic with a fried egg shape. View Answer, 10. A) True 3. 2. C. Enrichment Culture technique Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? Ans: The steps adopted in a typical sewage treatment plant are as given below: ADVERTISEMENTS: a) Condenser lens C. American Type Counter Collection Which of the following microorganism produces dextran? Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. D) prevent mold. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. It is colourless at pH 8.0 and becomes red at pH above 10.0. 11. d) appendaged bacteria a) viral infection Crowded plate technique Growth of bacteria or microorganisms refer to __________________ Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? c) Enrichment Culture technique a) Phenol red plate Primary treatment removes material that will either float or readily settle out by gravity. 13. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo ticks and fleas. b) below 1 percent [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). D. 2-fold. b) hydrophilic barrier b) The examination of the infection sites, c) They are prokaryotes in cellular organization. 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. Gram negative bacteria take the color of safranin stain and appear pink or red. A routine GTT: is three hours long. C) inoculation, fermentation, downstream processing, removal of waste. a) Treponema You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. Tyrocidines are more effective against ___________________ A. The section contains MCQs on diseases caused by fungi and protozoa, therapeutic drugs for fungal treatment and protozoan diseases. B. Rickettsia species are carried by. Microbial enzyme production concentrates on simple hydrolytic enzymes (proteases, amylases, pectinases) that degrade natural polymers such as proteins, starches, or pectin. A. d) Coliform bacteria. Which among the following group of microorganisms are found in the ducts of cows mammary glands? 1. b) Magnifying lens 14. B. Auxanographic technique Answer: A All Rights Reserved. b) Monotrichous 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. Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? Examples of microorganisms include bacteria, archaea, algae, protozoa, and microscopic animals such as the dust mite. c) chitin APT test C. Elastase I D. Quantitative fecal fat testing: 6. View Answer, 47. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? You can also download the PDF of Microbiology MCQs by applying below. D. Indicator dye technique. b) mutualistic During their metabolism, microbes produce chemicals, some of which are used by human beings. b) Fungi View Answer, 17. 1g of soil is added to that test tube and the soil is allowed to settle down. Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. C. Organic acid producers Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? A. B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. Viral hemagglutination assays only work with certain types of viruses because. 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, The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. d) spherical b) Acanthopeltis C. Enrichment Culture technique uses 100 grams of glucose in a 300ml solution. b) Auxanographic technique Clarification: ATCC stands for American Type Culture Collection. a) Study of molecules that are visible to human eyes 11. B. d) All of the mentioned View Answer, 26. (Or show it to your microbiology professor, just for fun.) a. Streptococcus pyogens b. c) holozoic C) sugar. 5. c) ribitol or glycerol residues Crowded plate technique Biotechnology, the practical application of microorganisms in making products for human use, is a relatively new science, begun since Pasteur's time. d) electron beams 7. Identify bacteriophage. First link in any food chain is usually green plants because. d) Mycoplasmas What is the pH range of Bromophenol blue? Sugar fermentation test: Bacteria is grown in a sugar media. View Answer, 7. c) Secondary treatment Which of the following are the growth morphology of the protozoa? 43) Which of the following methods are the most common and routine culture methods performed in the microbiology lab for the proper isolation and identification of bacteria and fungi? d) gene C. The optimum temperature for the growth of an organism must be above 50C a) Micrococci Which of the following dye is colourless at acidic pH and becomes red at basic pH? Microbiology is the study of living organisms that are not visible to the naked eyes. A. 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. It should not leave damage and odour. 9. 30 seconds. Want to cite, share, or modify this book? 45) What are the types of general characteristics that are important for the identification and classification of protozoa? Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. The section contains multiple choice questions and answers on bioenergetics principles, energy production by photosynthesis, anaerobic and aerobic processes. Each daughter cell is a clone of the parent cell. A. 37) Which of the following is the selective media used for the cultivation and isolation of. You can also check this one and can share your opinions on Cell Culture Plates Product. View Answer, 39. Glycolysis can occur in ___________ Which among the following are microaerophilic bacteria? 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. 5. are not subject to the Creative Commons license and may not be reproduced without the prior and express written The microorganisms are chosen based on the rest three criteria. D) all of the above. 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. C) alcohol. This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. C. Phenolphthalein b) Microbacteria A) radiation. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Automatic Type Counter & Classifier B) False, Mass-produced microbial cells can be used as livestock feed. View Answer, 12. Set up a series of 1/10 dilutions: a. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. The section contains MCQs on phages structure and morphology, bacterial viruses replication, lysogeny and lytic. 9. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms? The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. d) chitin, cellulose, or hemicellulose d) Corynebacterium diphtheriae Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. Which of the following plate is used to detect and isolate organic acid producers? View Answer, 28. Enrichment culture technique was developed by_________, 16. c) Study of organisms that are not visible to naked eyes 8.0 10.0 The Gram staining is one of the most crucial staining techniques in microbiology. Which of the following method is not used in isolation and screening of desired microorganisms? Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. a) Crowded plate technique Urinary tract infection was suspected, urine sample and swab specimen were taken and cultured on suitable agar media, a microscopic examination was performed. b) Gram-positive organisms Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? 14. 5. Chapter 3: Classification of Viruses MCQs. B. Auxanographic technique 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? What is required for proper isolation of microorganisms? a) Thiobacillus thiooxidans 6. c) Enrichment Culture technique All Rights Reserved. c) cytoplasm d) Hanging Drop technique B. View Answer, 22. the virus must be able to lyse red blood cells. b) Mesophile and psychrophile b) cell wall Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. Which of the following is a family of lambda phage viruses? A test tube contains 9ml distilled water. In an ecosystem, herbivores represent. 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 is not related to microbes?a) Microbes are not ideal for biotechnologyb) Microbes produce chemicals during their metabolismc) Microbes can be grown on artificial mediumd) Microbes can live in highly acidic mediumAnswer: aClarification: Microbes can be grown on artificial cultures media where they form colonies. Which of the following method proceeds with 2-plate preparation? Which of the following method proceeds with 2-plate preparation? Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. B) are by-products of metabolism that are not important to microbe function. Which of the following is a prokaryotic microorganism? a) Crowded plate technique d) Lactobacillus acidophilus This reduces the cooling costs in large scale fermenters. c) American Type Counter Collection c) parasitic infection b) Clostridium botulinum A food chain comprising birds, green plants, fish and man. c) Nitrosomonas europaea Home Fermentation Technology Objective Questions 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers. A test tube contains 9ml distilled water. c) The optimum temperature for the growth of an organism must be above 50C The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme For this dilution, it may be said that the solution was diluted _______ View Answer, 6. 10. (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. 2. 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. Which shape of bacteria has been represented in the following diagram?a) Rod-shapedb) Comma shapedc) Spiral shapedd) Spherical shapedAnswer: aClarification: The following diagram represents rod-shaped bacteria, magnified 1500X. What is the pH range of Bromophenol blue? Which of the following is not a subfield of microbiology? 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. 4. a) Growth Factor producers What is Microbiology? View Answer, 42. False. c) Binary fission A) are essential to microbe function. Which of the following method can be used to determine the number of bacteria quantitatively? B) False, Pasteurization is used to sterilize milk. screening of microorganisms includes mcq. Which isolation technique is most commonly used for colony isolation in the laboratory? 6. 2. c) Chlorophycophyta a) phospholipids d) Multiple fission View Answer, 24. On the second day, the symptoms got worse and she was taken to the hospital. Identification of bacteria by biochemical tests. d) Lophotrichous View Answer, 19. Binary fission begins when the DNA of the bacterium divides into two (replicates). a) Algae c) Robert Koch b) Viruses You will get a gown or sheet as a cover. d) Indicator dye technique A microorganism is a living thing that is too small to be seen with the naked eye. b) mycotic infection a) Vibrio cholerae Secondary screening may be qualitative and quantitative in its approach. View Answer, 33. The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. This set of Fermentation Technology Interview Questions and Answers focuses on Isolation and Screening of Industrially Important Microbes. How do you isolate microorganisms in the air? View Answer, 8. c) Objective lens MCQ on Our Environment Question 9. Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. A. 8. C) use of microbes in sewage and pollution control. 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? Which of the following statement is correct regarding primary screening________. View Answer, 21. OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. It is further followed by secondary screening, to check the capabilities and gain information about these organisms. 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. 7. Pathogen testing is continuously performed throughout the production . b) aerobic cells A. The section contains questions and answers on diseases caused by staphylococcus, streptococcus, corynebacterium, aerobic and anaerobic gram, viruses containing single and double stranded dna. Which microorganism(s) among the following perform photosynthesis by utilizing light? d) 6.4 8.0 As primary screening allows the detection and isolation of microorganisms which posses, potentially interesting industrial applications. a) Watson c) fecal streptococci Which isolation technique is most effective? A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. 11. Categories: . b) plaque c) DNA polymerase I Which of the following are present in teichoic acids? Which of the following is the example of encapsulated gram-positive bacteria? You can also prevent infections through: Hand-washing. A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. 6. View Answer, 3. View Answer, 11. c) Streptococci. These microorganisms have been often under-appreciated and under-studied. Clarification: Hanging drop technique is used for motility testing of bacteria. 10. Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. View Answer, 30. 1. 4. View Answer, 14. 4. B) 62.3oC for 30 minutes. a) Neisseria gonorrhoeae. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. 4. a) cytoplasmic membrane C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. b) True Fermentation Products & Bioreactor Design, Fermentation Laboratory & Bioprocesses Design, SCADA System for Bioreactors, Beer & Brewing, Fermenting Vegetables & Sour Tonic Beverages, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Fermentation Technology Questions and Answers Microbial Growth Kinetics FedBatch Culture, Next - Fermentation Technology Questions and Answers Preservation of Industrial Microorganisms, Certificate of Merit in Fermentation Technology, Fermentation Technology Certification Contest, Genetic Engineering Questions and Answers Database Screening and Screening by Nucleic Acid Hybridisation 1, Fermentation Technology Questions and Answers Improvement of Industrial Microorganisms, Fermentation Technology Questions and Answers Fermentation Products Recovery and Purification Chromatography, Genetic Engineering Questions and Answers Database Screening and Screening by Nucleic Acid Hybridisation 2, Mechanical Operations Questions and Answers Screening Equipments, Fermentation Technology Questions and Answers Microbial Growth Kinetics FedBatch Culture, Fermentation Technology Questions and Answers Aeration and Agitation Determination of Kla Values, Fermentation Technology Questions and Answers Microbial Growth Kinetics Continuous Culture, Fermentation Technology Questions and Answers Commercial Applications Surface, Submerged and Solid State Fermentation, Books on Engineering, Science and Technology, Chemical Process Technology MCQ Questions. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. a) elongated Our mission is to improve educational access and learning for everyone. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. b) 10-fold C) is used to prevent growth of halophiles. Home Class 12 Biology Objective Questions 250+ TOP MCQs on Microbes and Answers. Who is considered the father of Western medicine? Crowded plate technique is used for screening of____________. A) True a) Eremothecium ashbyi False. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. Clarification: The Antibiotic producers show the zone of inhibition. Chrysolaminarin is the reserved food of ___________________ Which of the following types of mutants can be isolated using the replica plate technique? Blood C. Electrolytes D. Water: 5. 2. Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? View Answer, 38. B) False, Yeast cells prefer aerobic conditions to multiply in number. D. Indicator dye technique. 1g of soil is added to that test tube and the soil is allowed to settle down.