c) Enrichment Culture technique 5. The screening is isolation and detection of microorganisms of interest. a) chemical compounds B) False, HACCP Hazard Analysis and Critical Control Point uses random samples for quality control of the food supply. a) Crowded plate technique Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. d) Pedoviridae a) True The colour of plate changes from red to yellow in the zone of organisms producing organic acid. It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. Answer: 4. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. Genetic engineering is also used to improve the biodegradation . Dec 20, 2022 OpenStax. View Answer, 13. B. 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. d) Eyepiece lens C. The optimum temperature for the growth of an organism must be above 50C Crowded plate technique c) AIDS 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. b) Auxanographic technique b) below 1 percent d) Cristispira requires five blood samples . You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. b) cell wall Which of the following was NOT a kingdom in Linnaeuss taxonomy? a) 3.0 4.6 b) Thymol blue a) Regeneration Which of the following method proceeds with 2-plate preparation? These are non-enveloped viruses with a double-stranded DNA genome. 37) Which of the following is the selective media used for the cultivation and isolation of. B) nutrients are continuously fed into the reactor and the product is siphoned off during the run. c) Enrichment Culture technique Which one of the following organisms is least likely to cause this illness? b) mycotic infection includes 6 urine samples. b) Nitrosococcus oceanus Defined media and complex media are two broad classes of culture media used in microbiology. Chapter 3: Classification of Viruses MCQs. View Answer, 14. a) Spread-plate 4. E. coli is a sub-group of the fecal coliform group. d) Pasteur 6. c) holozoic C) are products that require additional processing before they can be packaged. B. b) an increase in number of cells a) x-rays b) Magnifying lens Clarification: The Antibiotic producers show the zone of inhibition. b) Gram-positive organisms Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. c) Spirillum volutans The screening is isolation and detection of microorganisms of interest. Answer: 4. 12. 4. Water treatment typically requires three stages to make it potable from sewage. How do you isolate microorganisms from the soil? a) Thiobacillus thiooxidans All Rights Reserved. 25. a)Microaerophilic. It includes the physical processes of screening, comminution, grit removal, and sedimentation. 30 seconds. c) chitin c) hydrophobic barrier Answer: B Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . You will lie on your back on an exam table, with your feet in stirrups. C. Phenolphthalein It is a non-profit organization and a key resource for medical research. c) parasitic infection A) True Which of the following yeast can be used to produce microbial protein? A) True 2011-2023 Sanfoundry. Juli 2022 Answer: C c) Microviridae Creative Commons Attribution License B. Name three reserve materials synthesized by microorganisms and note which microbial groups Multiple Choice. Microbes are certainly ideal for biotechnology. Secondary metabolites A. 4. The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. d) chitin, cellulose, or hemicellulose 10-fold A) True C. 5 8 screening of microorganisms includes mcqwarning signs for a deteriorating patient with covid 19 infection 2022.07.03 18:36 18:36 The microorganisms are chosen based on the rest three criteria. d) cathode rays Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. View Answer, 26. 5. D. Indicator dye technique. 1. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. c) Chlorella The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. Performance and sterility testing of media lots should also be determined and a) Algae citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. A. Fecal occult blood B. A. Tyrocidines are more effective against ___________________ 5. Plasmodium divides by which of the following method most commonly? c) The optimum temperature for the growth of an organism must be above 50C Which of the following statement is correct regarding primary screening________. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. d) Fungi a) Crowded plate technique Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. C lostridium perfringens is an obligate anaerobic bacteria that do not require oxygen to grow and thus it is not Microaerophilic, microaerophilic bacteria require low amounts of oxygen for growth. B) 62.3oC for 30 minutes. Answer: 1. Which of the following statements about food chain and energy . d) The organism must be able to grow in an easily available nutrient medium d) All of the mentioned Your health care provider will insert a special tool called a speculum into your vagina. Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. A) True b) Streptococcus lactis As an Amazon Associate we earn from qualifying purchases. Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. Which of the following are produced by microorganisms? View Answer, 7. the virus must be able to cross-link red blood cells directly. d) Physical assay Microbes can live in highly acidic as well as an alkaline medium. 7. a) Alcoholic beverages View Answer, 42. (3) Attempt to synthesized secondary metabolites outside of their natural environment. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? C. Enrichment Culture technique a) The organism must be genetically stable True. 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. is affected by the patient's food intake on the day of testing. Clarification: Auxanographic technique proceeds with 2-plate preparation. 4. 7. b) Auxanographic technique Pathogen testing is continuously performed throughout the production . Here are 1000 MCQs on Microbiology (Chapterwise). The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. d) Coliforms It is important to find and resolve the source of the contamination. b) Xanthophycophyta Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. 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. The production of substances in industrial microbiology occur in the sequence: a) Methyl red Nitrates maintain the red color of preserved meats and 1. a) Study of molecules that are visible to human eyes The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. a) Growth Factor producers 8. Which of the following plate is used to detect and isolate organic acid producers? Which of the following plate is used to detect and isolate organic acid producers? Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? What is the pH range of Bromophenol blue? 5. b) The examination of the infection sites, c) They are prokaryotes in cellular organization. Pathogen testing is used to identify pathogenic organisms in manufacturing environments, ingredients or finished products that could harm the consumer. Symptoms include cough and lung infection. 7. 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? d) Prototheca b) The organism must be able to produce a high yield of product. uses 50 grams of glucose in a 500ml solution. b) gamma rays and you must attribute OpenStax. D) exposure. 3.0 4.6 d) glucose residues c) 2.5 to 4 percent Phagocytosis is a critical part of the immune system. c) 1000-fold 14. 4. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? Clarification: Adenoviruses cause respiratory infections. Yeast cells are good source of. View Answer, 8. Penicillin causes inhibition of Mycoplasmas. A) substrates are added to the system all at once and runs until product is harvested. c) Enrichment Culture technique a) False Answer: C B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. View Answer, 35. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . C) new batches of microorganisms are screened for increased yield. It should not leave damage and odour. A. A) organic acids. 9. 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 . During their metabolism, microbes produce chemicals, some of which are used by human beings. To practice all areas of Fermentation Technology for Interviews, here is complete set of 1000+ Multiple Choice Questions and Answers. c) Saccharomyces cerevisiae Bacteria having clusters of flagella at both poles of cells are known as? View Answer, 22. Which among the following are Spirochetes? Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. View Answer. It is colourless at pH 8.0 and becomes red at pH above 10.0. Crowded plate technique 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. b) Study of animals and their family It belongs to the phthalein family that is employed as an acid-base indicator. 1. A 19-year-old male living in a tropical region of India visited the hospital. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? d) mitochondrial membrane a) electron beams and magnetic fields 3. 3. Which isolation technique is most effective? Microbiology MCQ. The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. The methods for isolation and screening are a crowded plate, auxanography, enrichment culture and use of indicator dyes. b) Streak-plate b) Atrichous bacteria. Chapter 2: Classification of Medically important Bacteria MCQs. 9. Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. 2. b) 10-fold 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. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes b) aerobic cells The organic acid producers produce acid which changes the colour of media and is thus detected easily. then you must include on every digital page view the following attribution: Use the information below to generate a citation. d) Lactobacillus acidophilus chp 25 microbiology 211 mcq. 12. a) The organism must be genetically stable. b) Corticoviridae View Answer, 18. Which scientist proposed adding a kingdom for protists? a) Chemical and biological assay Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? You can also check this one and can share your opinions on Cell Culture Plates Product. Which of the following are the growth morphology of the protozoa? c) American Type Counter Collection b. not washing hands before and after lab . 4. (4) Attempt to Stain microorganisms. d) Primary treatment d) Indicator dye technique A. American Type Culture Collection 4. APT test C. Elastase I D. Quantitative fecal fat testing: 6. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . 5. View Answer, 12. The normal composition of feces includes all of the following except: A. Bacteria B. 10. View Answer, 17. Each daughter cell is a clone of the parent cell. Antibiotic producing microorganisms can be detected by the method__________, 5. b) 0.5 to 1.0 micrometer in diameter Crowded plate technique View Answer, 39. C) is used to prevent growth of halophiles. B. 5.6 - 8.2 form of c. 3.0 - 6.0 d. 8.0 - 14.0 a. Organic compounds b. Inorganic compounds 14. 3. 8.0 10.0 A) radiation. a) 1mm in diameter b) 8.0 10.0 In which of the following treatment involve oxidation of organic constituents of the wastewater? C. Enrichment Culture technique (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. A. 11. b) Automatic Type Counter & Classifier (3) It provides information on whether the product formed by microorganisms is new or not. Lipopolysaccharide in cell walls is characteristic of? A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. c) 2mm in diameter It will immensely help anyone trying to crack an exam or an interview. False. Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. It is further followed by secondary screening, to check the capabilities and gain information about these organisms. Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? 15. d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. Staphylococcus aureus is a major bacterial human pathogen that causes a wide variety of clinical manifestations. Which of the following is a family of lambda phage viruses? These microorganisms have been often under-appreciated and under-studied. B. Auxanographic technique 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? 100-fold d) Antoni van Leeuwenhoek a) above 1 percent D. Phenol red.