4. B) are by-products of metabolism that are not important to microbe function. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. The reason they are called microorganisms is that you can only see them when you use a microscope. Which of the following microorganism is eliminated in canned foods? b) Clostridium botulinum Primary treatment removes material that will either float or readily settle out by gravity. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. The section contains MCQs on chemotherapy historical highlights, antibiotics and their actions, microbiological assay of antibiotics, antifungal, antiviral and antitumour antibiotics. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? d) cellulase b) Budding View Answer, 41. 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. Self-Assessment Quiz. b) cell wall a) Condenser lens The section contains multiple choice questions and answers on morphology, reproduction, physiology and fungi cultivation, fungi classification and special interest. About Oracle NetSuite. Sulphates are reduced to hydrogen sulphide by _____________________ b) Potato Dextrose Agar plate Answer: C Which of the following are produced by microorganisms? d) All of the mentioned B. Auxanographic technique 13. Which isolation technique is most commonly used for colony isolation in the laboratory? c) rod shaped c) Psychrophile Which among the following is not an ammonia-oxidizing bacteria? 2. Which of the following method is not used in isolation and screening of desired microorganisms? Microbes can live in highly acidic as well as an alkaline medium. c) Streptococcus thermophilus View Answer, 26. Which among the following are Spirochetes? These microorganisms have been often under-appreciated and under-studied. b) False a) True 7. It is a non-profit organization and a key resource for medical research. Secondary metabolites Who is considered the father of Western medicine? 4. False. 8. D) starch. b) Jenner a) Study of molecules that are visible to human eyes ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. True. Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? View Answer, 4. B) 62.3oC for 30 minutes. Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. d) Pasteur d) intercalating agents Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. b) hexokinase b) 10-fold It is important to find and resolve the source of the contamination. C. Phenolphthalein These are non-enveloped viruses with a double-stranded DNA genome. All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. In an ecosystem, herbivores represent. c) Chlorophycophyta 1. this would be absolutely amazing. d) Pedoviridae b) Magnifying lens What is the fecal test that requires a 3-day specimen? View Answer, 49. A. d) All of the mentioned Urinary tract infection was suspected, urine sample and swab specimen were taken and cultured on suitable agar media, a microscopic examination was performed. 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 questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. 1. A. 10. c) Crick It is done by using paper, thin layer or other chromatographic techniques. Some of the frequently asked exam questions are as follows:-. It will immensely help anyone trying to crack an exam or an interview. 10. b) gamma rays b) Corticoviridae D) removal of waste, inoculation, fermentation, downstream processing. Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? Which among the following group of microorganisms are found in the ducts of cows mammary glands? B) mass, controlled culture of microbes to synthesize products. 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. Place the gram of soil into the first tube with saline and SHAKE WELL. B. The organism must be genetically stable Acridine orange is which type of mutagen? Symptoms include cough and lung infection. c) prophage Answer: B d) Nitrosovibrio tenuis Examples of microorganisms include bacteria, archaea, algae, protozoa, and microscopic animals such as the dust mite. d) Study of microscope 12. 13. Penicillin causes inhibition of Mycoplasmas. c) cytoplasm A) organic acids. 2011-2023 Sanfoundry. C. Enrichment Culture technique B. Auxanographic technique Phosphorus is essential component of __________ b) hydrophilic barrier View Answer, 14. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. D) 134 oC for 1 second. a) Neisseria gonorrhoeae. Which was the first disease for which a chemotherapeutic agent was used? Home Fermentation Technology Objective Questions 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers. Your health care provider will insert a special tool called a speculum into your vagina. 5. a) Alcoholic beverages 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. A. 5. 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. View Answer, 20. a) x-rays answer choices. 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) Algae Butanol is obtained by fermenting molasses by. Which of the following method proceeds with 2-plate preparation? 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? requires five blood samples . (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. It is used to reduce the dense culture of cells to usable concentration. Clarification: Auxanographic technique proceeds with 2-plate preparation. Which of the following is a type of fungal microorganism? 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. Phenol red plate A. Screens are made of long, closely spaced, narrow metal bars. c) The optimum temperature for the growth of an organism must be above 50C All Rights Reserved. b) RNA polymerase The screening is isolation and detection of microorganisms of interest. C. 5 8 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. Which of the following method is not used in isolation and screening of desired microorganisms? Besides macroscopic plants and animals, microbes are the major components of biological systems on this earth. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. d) chitin, cellulose, or hemicellulose B. d) Phenol red View Answer, 3. B. A 7 year old girl developed a sore throat and fever for 2 days. View Answer, 12. MCQ.9):Which bacteria have flagella of amphitrichous type means the flagellum are present at both the sides? Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. Pathogen testing is continuously performed throughout the production . You can also prevent infections through: Hand-washing. b) Monotrichous He came with a lesion on the lower part of the left leg that according to him first appeared about a week before visiting the hospital. 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. 5. 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. Which of the following is the most accurate method for microbial assay of antibiotics? View Answer, 5. d) Physical assay Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. a) Lactobacillus a) Crowded plate technique Crowded plate technique 44) Which of the following microorganisms can grow only as strict intracellular parasites? Indeed, until Anton von Leeuwenhoek invented . Clarification: Phenol Red plate is used to detect and isolate organic acid producers. c) parasitic infection This quiz is designed to help you assess how well you have learned the content of this lesson. d) Eyepiece lens C. The optimum temperature for the growth of an organism must be above 50C 2. Crowded plate technique b) vitamins 2. a) above 1 percent c) hydrophobic barrier a) Crowded plate technique Who was the first to observe animalcules under the microscope? 15. It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. d) an increase in the mass of an individual organism 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. D) are harvested during the exponential phase of growth. B. b) ribitol residues Now that you have read Lesson 5 and have completed the exercises, you should be ready to take the self-assessment quiz. Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. Juli 2022 b. Growth of bacteria or microorganisms refer to __________________ a) Leuconostoc citrovorum . Which of the following dye is colourless at acidic pH and becomes red at basic pH? 12. Wash your hands with soap and water for at least 20 seconds. View Answer, 40. Which of the following is a family of lambda phage viruses? c) Enrichment Culture technique Which of the following is the standard resource for identifying bacteria? Secondary screening may be qualitative and quantitative in its approach. The organism must be able to produce a high yield of product Industrial microbiologists use "tricks" to increase the amount of chosen end product; this may include The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo C. Enrichment Culture technique d) Indicator dye technique a) The organism must be genetically stable. 3. b) Nitrosococcus oceanus View Answer, 19. 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MCQ on Industrial Microbiology. (4) This may be accomplished by paper, thin layer, chromatographic technique. (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. View Answer, 44. [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) Photosynthetic sulfur bacteria a) 1mm in diameter 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. Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. a) parasitic Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. Which of the following types of mutants can be isolated using the replica plate technique? MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. 3. Secondary screening may be qualitative and quantitative in its approach. b) Gram-positive organisms A. Performance and sterility testing of media lots should also be determined and A microorganism is a living thing that is too small to be seen with the naked eye. A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. b) Study of animals and their family Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. B. 6. b) The examination of the infection sites, c) They are prokaryotes in cellular organization. View Answer, 37. 5. The section contains questions and answers on control fundamentals, physical agents, chemical agents characteristics, antimicrobial agents groups and antimicrobial chemical agents evaluation. Children are more susceptible to this disease. View Answer, 18. d) mitochondrial membrane Rickettsia species are carried by. the virus must be able to cross-link red blood cells directly. The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme The greatest resolution in light microscopy can be obtained with ___________ Report an issue. Answer: A The presence of E. coli in a drinking water sample almost always indicates recent fecal contamination, meaning there is a greater . b) Rhodospirillum Which of the following is not a subfield of microbiology? a) viruses Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. What is Microbiology? magic island poem tone Consult Now 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) Secondary treatment 5. In the following diagram, what does the question mark represent?a) Ciliab) Flagellac) Haird) PseudopodiaAnswer: b Screening includes primary screening and secondary screening. c) Streptococci. a) viral infection c) 1000-fold 10. Which of the following method is not used in isolation and screening of desired microorganisms? False. 2. c) American Type Counter Collection a) 100-fold 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. How do you isolate microorganisms from the soil? C) new batches of microorganisms are screened for increased yield. 5.6 - 8.2 form of c. 3.0 - 6.0 d. 8.0 - 14.0 a. Organic compounds b. Inorganic compounds 14.

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