12. 7. 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? 5. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? b) Automatic Type Counter & Classifier Indeed, until Anton von Leeuwenhoek invented . A. It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. Measles is a disease caused by a virus, it is spread via respiratory droplets. It should have a fast rate of kill of micro-organisms. a) viral infection Binary fission begins when the DNA of the bacterium divides into two (replicates). a. C) selecting microbial strains that lack a feedback system. c) Robert Koch (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. 10. B) nutrients are continuously fed into the reactor and the product is siphoned off during the run. A. The reason they are called microorganisms is that you can only see them when you use a microscope. 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) exposure. 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. 10-fold A) heat below 100 oC. B) plasmolyzes bacteria and fungi. c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. 4.1: Prokaryote Habitats, Relationships, and Microbiomes. d) Malaria Crowded plate technique 5. Which shape of bacteria has been represented in the following diagram? 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. Place the gram of soil into the first tube with saline and SHAKE WELL. The section contains multiple choice questions and answers on nutritional requirements, bacteriological media and physical conditions growth. a) Shortest wavelength of visible light used b) Streptomyces olivaceus a) cellulose dehydrogenase lack of cell wall. View Answer, 32. The normal composition of feces includes all of the following except: A. Bacteria B. 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. Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. a) Methyl red c) Lactobacilli Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. a) Cyanobacteria, Fungi and Viruses Each daughter cell is a clone of the parent cell. Vaccination was invented by ____________ View Answer. View Answer, 38. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. 3. Complex media are prepared using digests of microbial, animal, or . 8. Which of the following are the growth morphology of the protozoa? D. Indicator dye technique. Phosphorus is essential component of __________ c) cytoplasm 3. View Answer, 48. The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. Which isolation technique is most commonly used for colony isolation in the laboratory? 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. The process is repeated several times until the requirement is met. 13. Secondary screening may be qualitative and quantitative in its approach. Report an issue. Our members have a unique depth and breadth of knowledge about the discipline. Phagocytosis is a critical part of the immune system. 1g of soil is added to that test tube and the soil is allowed to settle down. The Gram staining is one of the most crucial staining techniques in microbiology. b) Streptococcus lactis d) bacterial infection c) carbohydrates d) 2-fold B) False, Yeast cells prefer aerobic conditions to multiply in number. A. Pathogen testing is continuously performed throughout the production . You can also download the PDF of Microbiology MCQs by applying below. What are the cell wall structural components of fungi? A) True 1. b) light waves D) A and C . Place 6 test tubes into a rack and fill each with 9ml of 0.9% NaCl solution. Microbiology MCQ. Q. Q.1: Screening of microorganisms includes . B) heat. Label these plates 1/10 3 through 1/10 6. b) Budding 4. The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. Which of the following are present in teichoic acids? View Answer, 39. Creative Commons Attribution License Answer: B Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? Biotechnology, the practical application of microorganisms in making products for human use, is a relatively new science, begun since Pasteur's time. b) hydrophilic barrier c) Enrichment Culture technique Which of the following plate is used to detect and isolate organic acid producers? View Answer, 24. d) All of the mentioned d) Gram-positive bacteria C) 72 oC for 15 seconds. A) True 8. Chapter 4: Clinical Virology MCQs. The greatest resolution in light microscopy can be obtained with ___________ It is colourless at pH 8.0 and becomes red at pH above 10.0. 2. B. Note when energy and additional compounds are necessary for any of these mechanisms to operate. b) Killing pathogenic microorganisms c) Killing spores d) None of these answer-A 3. Primary treatment removes material that will either float or readily settle out by gravity. A 7 year old girl developed a sore throat and fever for 2 days. Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? a) elongated This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. Each of the following organisms is an important cause of urinary tract infections except: a. Klebsiella pneumoniae b. Escherichia coli c. Bacteriodes fragilis d. Proteus mirabilis; A 30-year woman has non-bloody diarrhea for the past 14 hours. a) Chemical and biological assay 1. Sanfoundry Global Education & Learning Series Fermentation Technology. 10. Answer: B b) vitamins b) False Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? 1. 42) Which of the following are the routine diagnostic methods performed for the microbial examination of blood specimens collected from a patient with a high fever for more than 2 days? C) new batches of microorganisms are screened for increased yield. Crowded plate technique is used for screening of____________. Which of the following method is not used in isolation and screening of desired microorganisms? Types of pathogens include specific bacteria strains, viruses, fungi, or parasites that can cause illness in its host. The microorganisms from lakes and rivers can grow at a salt concentration of _________ c) The optimum temperature for the growth of an organism must be above 50C. 7. View Answer, 4. Bacteria do not grow at a water activity level below 0.91 and require neutral pH (6.5-7) to cause food spoilage (e.g. 8. b) Gram-positive organisms _______ are the agents that act as carriers of a pathogen and spread diseases. When examined he said the cough first started about a month ago, he said no other symptoms appeared in the first week, he complained about the loss of appetite due to which he lost some of his body weight. uses 100 grams of glucose in a 300ml solution. C) is used to prevent growth of halophiles. b) Longest wavelength of visible light used a) Gram-negative organisms Sulphur can be utilized by bacteria in the a. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. 8. c) Enrichment Culture technique Microbial enzyme production concentrates on simple hydrolytic enzymes (proteases, amylases, pectinases) that degrade natural polymers such as proteins, starches, or pectin. C. Enrichment Culture technique c) fecal streptococci View Answer, 43. Symptoms include cough and lung infection. 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. 5. Some strains, however, can cause illness. d) electron beams A) True The section contains multiple choice questions and answers on bioenergetics principles, energy production by photosynthesis, anaerobic and aerobic processes. What is the approximate size of the bacterial cell? a) True c) Chlorophycophyta Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? C. Enrichment Culture technique C) use of microbes in sewage and pollution control. A food chain comprising birds, green plants, fish and man. Clarification: Phenol Red plate is used to detect and isolate organic acid producers. A routine GTT: is three hours long. a) American Type Culture Collection Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? a) Crowded plate technique (2) Chemical, physical and biological properties of a product are also determined during secondary screening. False. View Answer, 34. this would be absolutely amazing. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. Which of the following media is used for screening amylase? d) Indicator dye technique c. confining long hair and loose clothing . Which of the following statements about food chain and energy . Question 6. 6.8 - 7.2 b. A) production of alcoholic beverages by microorganisms. View Answer, 29. 5.6 - 8.2 form of c. 3.0 - 6.0 d. 8.0 - 14.0 a. Organic compounds b. Inorganic compounds 14. Clarification: The Enrichment culture technique is useful for the detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium. C. Phenolphthalein C. American Type Counter Collection Now that you have read Lesson 5 and have completed the exercises, you should be ready to take the self-assessment quiz. D) prevent mold. d) Rose Bengal Agar plate (3) It does not provide many ideas about the production or yield potential of microorganisms. 6. d) Bacillus polymyxa The section contains multiple choice questions and answers on normal flora, human host, normal flora distribution, microbial adherence, epithelial cell layers penetration and microbial virulence factors. Which was the first disease for which a chemotherapeutic agent was used? B. Auxanographic technique Answer: 1. a) S mallpox Which is the secondary stage? 3. Which microorganism(s) among the following perform photosynthesis by utilizing light? Answer: 4. b) Fermented dairy products a) fats b) Auxanographic technique other viruses are too dangerous to work with in a clinical lab setting. Your health care provider will insert a special tool called a speculum into your vagina. For e.g., cellulose producers grow on nutrient medium supplied with cellulose. A. 3.0 4.6 The screening is isolation and detection of microorganisms of interest. d) 5 percent The methods for isolation and screening are a crowded plate, auxanography, enrichment culture and use of indicator dyes. Definition: true bacteria; bacteria excluding the archaea. b) Biological assay B) inoculation, downstream processing, fermentation, removal of waste. Avoid contaminated food and water. A. Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. The microorganisms secrete the enzymes into their nutrient medium to make better use of it. How to avoid the spreading of Microorganisms has been discussed. 3. View Answer, 14. Fecal coliform bacteria are a subgroup of total coliform bacteria. b) Auxanographic technique Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. Which of the following plate is used to detect and isolate organic acid producers? 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? False. includes 6 urine samples. 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. 7. It is done by using paper, thin layer or other chromatographic techniques. 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. A) are essential to microbe function. Secondary screening may be qualitative and quantitative in its approach. Full-form of ATCC is _________ [1] Often the first test performed, gram staining involves the use of crystal violet or methylene blue as the primary color. During their metabolism, microbes produce chemicals, some of which are used by human beings. View Answer, 20. View Answer, 3. Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. 2. 100-fold a) Leuconostoc citrovorum View Answer, 35. This set of Fermentation Technology Interview Questions and Answers focuses on Isolation and Screening of Industrially Important Microbes. What is the pH range of Bromophenol blue? b) Atrichous bacteria. Which of the following yeast can be used to produce microbial protein? b) cell wall About Oracle NetSuite. Aims and objectives. 1. Which among the following group of microorganisms are found in the ducts of cows mammary glands? magic island poem tone Consult Now a) Regeneration Which of the following is a family of lambda phage viruses? Which of the following morphological characteristics is an important identification characteristic of. a) Study of molecules that are visible to human eyes A. What does a viral DNA becomes after being associated with the bacterial chromosome? (1) Its a process for the detection and isolation of microorganisms of our interest. pH, cations, thymidine or thymine, use of supplemented media). Which among the following is not an ammonia-oxidizing bacteria? Here are 1000 MCQs on Microbiology (Chapterwise). Crowded plate technique a) Styloviridae d) gene Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. B. View Answer, 25. Yeast cells are good source of. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. Juli 2022 14. A. It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. False. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo c) 2mm in diameter The section contains multiple choice questions and answers on morphology, reproduction, physiology and fungi cultivation, fungi classification and special interest. a) above 1 percent View Answer, 23. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? Who was the first to observe animalcules under the microscope? The presence of E. coli in a drinking water sample almost always indicates recent fecal contamination, meaning there is a greater . 14. These microorganisms have been often under-appreciated and under-studied. Besides macroscopic plants and animals, microbes are the major components of biological systems on this earth. C. Enrichment Culture technique A. 1. View Answer, 4. Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? In this process desired microorganism is generally isolated from a natural environment like soil, which . a) 100-fold View Answer, 50. A) True This is one of the widely used methods and more important. 4. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. Which of the following is the standard resource for identifying bacteria? 2. What is high throughput screening used for? During the test, You will take off your clothes below your waist. B. Auxanographic technique Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. a) Mesophile The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. Screening includes primary screening and secondary screening. Several microbes are useful to humans in diverse ways like in household products, industrial products, agricultural products, etc. c) Gram-negative bacteria 13. 15. d) Pour plate 11. Which of the following foods is NOT made by fermentation? D. American Type Classifier and Collection. Chapter 2: Classification of Medically important Bacteria MCQs. C. MacConkeys Agar plate A. Fecal occult blood B. Which of the following types of microorganisms is photosynthetic? Microbiology is the study of : 3.
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