During their metabolism, microbes produce chemicals, some of which are used by human beings. D) prevent mold. d) cellulase 6. B. Auxanographic technique However, if environmental contamination can enter the system, pathogens could get in too. 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. a) viral infection A. B) using small scale containers to concentrate production. It is the organization which has the largest department of Research and Development. Which of the following are important primary screening techniques? Which of the following is the standard resource for identifying bacteria? lack of cell wall. 2. b) Study of animals and their family C) alcohol. Q.1. (Or show it to your microbiology professor, just for fun.) Dec 20, 2022 OpenStax. Gram positive bacterial cell wall takes the stain of crystal violet and appears, BIOCHEMISTRY, BIOMEDICINE & PHARMACEUTICS, Classification and identification of microorganisms, Branched Chain Amino Acid Metabolism and Maple Syrup Urine Disease, drugs for the treatment of cardiovascular diseases, MEDICAL MICROBIOLOGY gastrointestinal tract, Nosocomial infection/ hospital acquired infections, Lipid Metabolism: MCQs (Cholesterol, Triglycerides, and Other Lipids), MCQs on Sterilization and Disinfection - Decontamination, aseptic processes in laboratory and hospitals, Carbohydrate Metabolism: MCQ on Glycolysis & Gluconeogenesis. View Answer, 29. (2) Attempt to kill microorganisms outside of their natural environment. Which of the following method is not used in isolation and screening of desired microorganisms? a) Crowded plate technique Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. Your email address will not be published. B) plasmolyzes bacteria and fungi. Place the gram of soil into the first tube with saline and SHAKE WELL. B) False, Pasteurization is used to sterilize milk. Full-form of ATCC is _________. d) Pasteur The following diagram shows an adenovirus: ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. a) Treponema B) False, The aim of industrial microbiology is to produce chemicals that can be purified and packaged for sale or used in other commercial processes. 5. Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. 1. b) vitamins Which of the following plate is used to detect and isolate organic acid producers? Answer: A MCQ on Industrial Microbiology. Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? d) proteins 4. It should not leave damage and odour. d) DNA polymerase II 2. The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. Automatic Type Counter & Classifier a) Lactobacillus a) American Type Culture Collection Which of the following is NOT a criterion for the choice of an organism? Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. a) The organism must be genetically stable. b) Borrelia The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. d) 2 micrometer in diameter Candidiasis is a fungal infection, skin infection, and mouth or vaginal infection that can occur due to the overgrowth of the fungus. 3. Rickettsia species are carried by. It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. The section contains multiple choice questions and answers on bioenergetics principles, energy production by photosynthesis, anaerobic and aerobic processes. Therefore, the exact composition of a defined medium is known. b) Auxanographic technique D. Hanging Drop technique. d. using damaged equipment and glassware. View Answer, 22. a) Gram-negative organisms Children are more susceptible to this disease. View Answer, 15. c) Organic acid producers Answer: D c) Enrichment Culture technique 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. 13. a) Killing all microorganisms. Home Fermentation Technology Objective Questions 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers. A. Phenol red plate True. A) retards growth of Staphylococcus aureus. Crowded plate technique is used for screening of____________. Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? 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. Clarification: The pH range of Bromophenol blue is 3.0 4.6. What are the methods of isolating the pure culture of microorganisms? . The well-isolated colonies are antibiotic producers with the zone of inhibition. Home Class 12 Biology Objective Questions 250+ TOP MCQs on Microbes and Answers. Answer: B Which is the secondary stage? Which of the following is a type of fungal microorganism? Clarification: Phenolphthalein has a pH range between 8.0 10.0. a) Leuconostoc citrovorum View Answer, 7. Who is considered the father of Western medicine? D. Rose Bengal Agar plate. A) True Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. View Answer, 21. Sulphates are reduced to hydrogen sulphide by _____________________ Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of _____________ Nitrates maintain the red color of preserved meats and Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. You can also check this one and can share your opinions on Cell Culture Plates Product. b) Rabies A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. d) Prototheca Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. b) Automatic Type Counter & Classifier B) inoculation, downstream processing, fermentation, removal of waste. 10. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. A) substrates are added to the system all at once and runs until product is harvested. View Answer, 33. View Answer, 27. 5. The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. a) Regeneration 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 ___________ a) Nitrospina gracilis Salting, as a preservative, Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . C. Enrichment Culture technique d) Phaeophycophyta b) Fermented dairy products Which of the following types of mutants can be isolated using the replica plate technique? Identify bacteriophage. C) maintain a high osmotic pressure to kill microorganisms. the virus must not be able to lyse red blood cells. C. 5 8 Performance and sterility testing of media lots should also be determined and Glycolysis can occur in ___________ citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. It should have a fast rate of kill of micro-organisms. B. Auxanographic technique Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. View Answer, 11. (1) Its a process for the detection and isolation of microorganisms of our interest. d) American Type Classifier and Collection 11. 15. 1. d) glucose residues Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. b) Candida utilis d) Amino acid producers Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? They are mainly of two types: Primary and Secondary Screening Primary Screening : The effective screening must in one or few steps which allow the discarding of many valueless microorganisms, while at the . Here are 1000 MCQs on Microbiology (Chapterwise). Some of the frequently asked exam questions are as follows:-. c) Enrichment Culture technique ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. 2. b) plaque The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. 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. The reason they are called microorganisms is that you can only see them when you use a microscope. a) Study of molecules that are visible to human eyes a) x-rays c) Objective lens B. d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture 15. c) Spirochetes Clarification: The optimum temperature for the growth of an organism should be above 40C. Question 6. d) Pedoviridae Microbiology is the study of living organisms that are not visible to the naked eyes. Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. What is required for proper isolation of microorganisms? a) S mallpox b) Jenner 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. Answer: A a) above 1 percent c) Lactobacilli Engineering 2023 , FAQs Interview Questions. b) 0.5 to 1.0 micrometer in diameter Which among the following group of microorganisms are found in the ducts of cows mammary glands? b) gamma rays View Answer, 23. 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. The optimum temperature for the growth of an organism must be above 50C View Answer, 17. Except where otherwise noted, textbooks on this site A) are essential to microbe function. The following diagram represents ____________a) Plate with wormsb) Colonies of bacteria on a petri dishc) Onion root cells on a plated) Cheek cellsAnswer: bClarification: The following diagram represents colonies of bacteria on a petri dish. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . B. B) 62.3oC for 30 minutes. B. Auxanographic technique b) Xanthophycophyta False. c) base analog c) 5 8 15. Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. 12. b. Litmus milk test: When bacteria is grown in this medium, there may be the production of acids or alkali or even no change in pH. 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. Which of the following plate is used to detect and isolate organic acid producers? It is a non-profit organization and a key resource for medical research. c) Streptococci. 4. c) fecal streptococci c) Crick Chrysolaminarin is the reserved food of ___________________ A) True b) Streptomyces olivaceus Which of the following are produced by microorganisms? b) Longest wavelength of visible light used Vaccination was invented by ____________ a) site of generation of protonmotive force 2. 3. Which of the following types of microorganisms is photosynthetic? Juli 2022 Label these plates 1/10 3 through 1/10 6. 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. 12. B) False, Mass-produced microbial cells can be used as livestock feed. Identification of bacteria by biochemical tests. d) Lophotrichous Which among the following is a pathogenic algae for humans? 6. d) Indicator dye technique 6. c) Phenolphthalein The section contains multiple choice questions and answers on nutritional requirements, bacteriological media and physical conditions growth. The microorganisms secrete the enzymes into their nutrient medium to make better use of it. b) Magnifying lens C) is used to prevent growth of halophiles. View Answer, 12. View Answer, 3. A test tube contains 9ml distilled water. B) are by-products of metabolism that are not important to microbe function. 30 seconds. These are non-enveloped viruses with a double-stranded DNA genome. 9. Which of the following is not a subfield of microbiology? A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. Lipopolysaccharide in cell walls is characteristic of? c) Psychrophile Definition: true bacteria; bacteria excluding the archaea. Which of the following foods is NOT made by fermentation? b) transposons The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. 3. Air Sampling. 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, It doesn't include viruses and prions because they are classified as non-living. d) 6.4 8.0 A. View Answer, 4. 2. Who is considered the "father of Western medicine"? A) True c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. A test tube contains 9ml distilled water. A 7 year old girl developed a sore throat and fever for 2 days. View Answer, 43. d) Phenol red b) Viruses Answer: A True c) Peritrichous (2) It determines which microorganisms can produce a compound. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. 1g of soil is added to that test tube and the soil is allowed to settle down. a) Styloviridae D) A and C . ticks and fleas. 2. View Answer. A) radiation. c) Chlorophycophyta A) organic acids. Chapter 4: Clinical Virology MCQs. 6. Through primary screening only few or many microorganism that produce a industrially . Blood C. Electrolytes D. Water: 5. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. A. View Answer, 14. Answer: 4. View Answer, 16. 10-fold D. Indicator dye technique. c) Spirochaeta Clarification: Hanging drop technique is used for motility testing of bacteria. B) mass, controlled culture of microbes to synthesize products. Butanol is obtained by fermenting molasses by. MCQ.8): In which of the following bacterial condition, fimbriae helps the bacteria to stick to the mucous membrane of the host? Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a View Answer, 30. First link in any food chain is usually green plants because. View Answer, 49. Microbes are certainly ideal for biotechnology. True 11. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? a) Growth Factor producers A) True Prokaryotes are unicellular microorganisms whose cells have no nucleus. Which of the following statements is correct regarding secondary screening________. 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 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. (4) Attempt to Stain microorganisms. Viral hemagglutination assays only work with certain types of viruses because. d) All of the mentioned Contact Us. 6. 100-fold b) below 1 percent (3) It provides information on whether the product formed by microorganisms is new or not. b) ribitol residues Which organisms show the zone of inhibition grown on a Petri plate? View Answer, 19. Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. Prokaryotes can be found everywhere on our planet, even in the most extreme environments. d) hydrophobic barrier and site of generation of protonmotive force A. View Answer, 5. Answer: C D) are harvested during the exponential phase of growth. Primary treatment removes material that will either float or readily settle out by gravity. For e.g., cellulose producers grow on nutrient medium supplied with cellulose. 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View Answer. membranes of microorganisms. A. Fecal occult blood B. a. Streptococcus pyogens b. a) Amphitrichous The section contains MCQs on microorganisms, industry, industrial uses of bacteria, molds and yeasts, genotypic changes, bacterial recombination and conjugation, bacterial transduction and transformation. The microorganisms are chosen based on the rest three criteria. c) The optimum temperature for the growth of an organism must be above 50C. C) are products that require additional processing before they can be packaged. d) saprophytic Which of the following method proceeds with 2-plate preparation? requires five blood samples . c) rod shaped d) Lactobacillus acidophilus Answer: B Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? View Answer, 41. D) 134 oC for 1 second. What does a viral DNA becomes after being associated with the bacterial chromosome? 3. Acridine orange is which type of mutagen? 1. Which of the following media is used for screening amylase? In which of the following treatment involve oxidation of organic constituents of the wastewater? 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. The screening is isolation and detection of microorganisms of interest. Which of the following foods is NOT made by fermentation? 5. Pathogen testing is used to identify pathogenic organisms in manufacturing environments, ingredients or finished products that could harm the consumer. Answer: B A. 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. These microorganisms have been often under-appreciated and under-studied. View Answer, 4. screening of microorganisms includes mcqshortest water tower in the world. Rhizobium bacteria. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors?