View Answer, 12. a) DNA polymerase III Sulphur can be utilized by bacteria in the a. screening of microorganisms includes mcq; screening of microorganisms includes mcq. Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. C. Enrichment Culture technique d) Pasteur 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. The reason they are called microorganisms is that you can only see them when you use a microscope. Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. Which of the following types of microorganisms is photosynthetic? Primary treatment removes material that will either float or readily settle out by gravity. c) an increase in the size of an individual organism a) Nitrospina gracilis During the test, You will take off your clothes below your waist. c) Enrichment Culture technique b) ribitol residues D. American Type Classifier and Collection. (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. 10. Which of the following is the standard resource for identifying bacteria? c) Enrichment Culture technique B) False, Mass-produced microbial cells can be used as livestock feed. For which viral disease, vaccine has been recently developed through the use of tissue culture? All Rights Reserved. View Answer, 8. b) 0.5 to 1.0 micrometer in diameter 7. The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. 37) Which of the following is the selective media used for the cultivation and isolation of. D) are harvested during the exponential phase of growth. b) Atrichous bacteria. View Answer, 15. B) inoculation, downstream processing, fermentation, removal of waste. d. using damaged equipment and glassware. 26. [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). The screening is isolation and detection of microorganisms of interest. a) x-rays d) The organism must be able to grow in an easily available nutrient medium. Clarification: Hanging drop technique is used for motility testing of bacteria. A) heat below 100 oC. A. B) False, Yeast cells prefer aerobic conditions to multiply in number. a) Neisseria gonorrhoeae. 3. Cryptococcosis is a disease of ________________ 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? View Answer, 18. c) Mumps Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? Penicillin causes inhibition of Mycoplasmas. The Gram staining is one of the most crucial staining techniques in microbiology. d) Antoni van Leeuwenhoek View Answer, 6. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? a) Crowded plate technique a) phospholipids d) glucose residues You can also check this one and can share your opinions on Cell Culture Plates Product. View Answer, 31. B. Trophic level in an ecosystem represents. includes 6 urine samples. C) new batches of microorganisms are screened for increased yield. b) Auxanographic technique d) cellulase Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. D) removal of waste, inoculation, fermentation, downstream processing. d) Nitrosovibrio tenuis A) True View Answer, 2. False. A) True Which of the following dye is colourless at acidic pH and becomes red at basic pH? Which of the following method is not used in isolation and screening of desired microorganisms? It belongs to the phthalein family that is employed as an acid-base indicator. 11 junio, 2022. 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Which of the following method can be used to determine the number of bacteria quantitatively? 1. a) S mallpox Crowded plate technique Symptoms include cough and lung infection. d) Malaria 8. a) Lactobacillus b) Mesophile and psychrophile 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. A. Want to cite, share, or modify this book? Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? Air Sampling. 3.0 4.6 Which is the secondary stage? (1) Screen organic acid-producing microbes. Incorporation of CaCO3 in medium is also used to__________. d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture then you must include on every digital page view the following attribution: Use the information below to generate a citation. Mycoplasma pneumoniae is an unusual bacteria with distinctive colonies which are. c) chitin 13. 4. Answer: 4. d) The organism must be able to grow in an easily available nutrient medium Tyrocidines are more effective against ___________________ b) Auxanographic technique d) Lophotrichous APT test C. Elastase I D. Quantitative fecal fat testing: 6. View Answer, 4. B) sulfites. a) chemical compounds 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. The production of substances in industrial microbiology occur in the sequence: 4. b) hexokinase Dec 20, 2022 OpenStax. The microorganisms are chosen based on the rest three criteria. 3. 3. Who was the first to observe "animalcules" under the microscope? a) Styloviridae The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. The microorganisms secrete the enzymes into their nutrient medium to make better use of it. a) Treponema Lipopolysaccharide in cell walls is characteristic of? a) viruses 1g of soil is added to that test tube and the soil is allowed to settle down. D. Phenol red. 1. chipotle corporate phone number . c) Secondary treatment Antibiotic producers 1. 7. Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? A) organic acids. Biology Multiple Choice Questions on Microbes. Through primary screening only few or many microorganism that produce a industrially . Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. Set up a series of 1/10 dilutions: a. Prokaryotes are unicellular microorganisms whose cells have no nucleus. 6. 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. Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. ticks and fleas. d) Phaeophycophyta Answer: D First link in any food chain is usually green plants because. a) 1mm in diameter A. MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. A) True 2. Which of the following is a correct usage of binomial nomenclature? View Answer, 26. Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? View Answer, 49. C. MacConkeys Agar plate Answer: A The objective of this study was to isolate, identify, and screen the potential antimicrobial-producing . B) using small scale containers to concentrate production. A test tube contains 9ml distilled water. d) Phenol red Blood C. Electrolytes D. Water: 5. d) Hanging Drop technique Avoid contaminated food and water. It should be active and stable and environmentally safe. d) 5 percent a) Crowded plate technique a) Leuconostoc mesenteroides You will get a gown or sheet as a cover. Chapter 2: Classification of Medically important Bacteria MCQs. c) Pour-plate and spread plate c) UV light d) cathode rays 4.1: Prokaryote Habitats, Relationships, and Microbiomes. Yeast cells are good source of. b) Advanced treatment A 19-year-old male living in a tropical region of India visited the hospital. Which among the following are Spirochetes? 1g of soil is added to that test tube and the soil is allowed to settle down. The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? a) cellulose dehydrogenase a) changes in the total population View Answer, 30. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes Contact Us. b) Jenner Microbiology is the study of living organisms that are not visible to the naked eyes. c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. 14. 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. A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. B) False, Pasteurization is used to sterilize milk. View Answer, 35. 4. d) Lactobacillus acidophilus View Answer, 12. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? d) Bacillus polymyxa Which of the following is a prokaryotic microorganism? What is the name of the procedure performed under sterile conditions to eliminate c) Saccharomyces cerevisiae answer choices. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? d) electron beams Self-Assessment Quiz. Clarification: The optimum temperature for the growth of an organism should be above 40C. b) Fermented dairy products 3. Answer: B Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? d) Study of microscope This reduces the cooling costs in large scale fermenters. A) True A) radiation. Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? B) False, HACCP Hazard Analysis and Critical Control Point uses random samples for quality control of the food supply. [2][3] S. aureus is found in the . (3) Attempt to synthesized secondary metabolites outside of their natural environment. 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. Which isolation technique is most effective? c) 2mm in diameter 7. A) True 9. a) Leuconostoc citrovorum D) prevent mold. View Answer, 10. (1) Its a process for the detection and isolation of microorganisms of our interest. a) peptidoglycan screening of microorganisms includes mcq. There are various microorganisms types like bacteria, fungi, archaea, or protists. requires five blood samples . Respiratory pathogens: Includes common viruses and atypical bacteria 2: NP swab: Pathogens may have prolonged shedding time; positive results may not rule out infection from other pathogens. Which of the following method is used for the isolation of mutants? These are non-enveloped viruses with a double-stranded DNA genome. B. Auxanographic technique b) teichoic acid 5. a) Cephaleuros d) saprophytic View Answer, 16. c) base analog Pathogen testing is continuously performed throughout the production . (2) Attempt to kill microorganisms outside of their natural environment. c) Enrichment Culture technique d) Amino acid producers a) Amphitrichous In this process desired microorganism is generally isolated from a natural environment like soil, which . 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. b) False a) Chemical and biological assay 13. Which one of the following organisms is least likely to cause this illness? b) plaque d) American Type Classifier and Collection View Answer, 37. b) transposons d) mitochondrial membrane Easy detection of the small percentage of useful microorganism. lauren conrad and stephen colletti /; 2. 8. a) American Type Culture Collection Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. a) Methyl red d) Corynebacterium diphtheriae Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. A) True Which of the following are true for cytoplasmic membrane? Answer: A Sanfoundry Global Education & Learning Series Fermentation Technology. Juli 2022 b) Automatic Type Counter & Classifier Viral hemagglutination assays only work with certain types of viruses because. Secondary screening may be qualitative and quantitative in its approach. A. Clarification: ATCC stands for American Type Culture Collection. b) Fungi In modern plants the screens are cleaned . Name three reserve materials synthesized by microorganisms and note which microbial groups 9. 8. A. B. A. 44) Which of the following microorganisms can grow only as strict intracellular parasites? View Answer, 48. Which of the following statements is correct regarding secondary screening________. Which of the following foods is NOT made by fermentation? d) an increase in the mass of an individual organism c) Spirochetes d) All of the mentioned 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. Which of the following plate is used to detect and isolate organic acid producers? d) Rose Bengal Agar plate View Answer, 33. View Answer. b) Acanthopeltis Answer: 1. 3. D) all of the above. the virus must not be able to lyse red blood cells. a) Eremothecium ashbyi 5. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . b) The organism must be able to produce a high yield of product. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? [1] Often the first test performed, gram staining involves the use of crystal violet or methylene blue as the primary color. Rickettsia species are carried by. A. d) both aerobic and anaerobic cells 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. 3. The section contains multiple choice questions and answers on nutritional requirements, bacteriological media and physical conditions growth. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. Which of the following statement is correct regarding primary screening________. Clean and disinfect surfaces that are touched often. chp 25 microbiology 211 mcq. Who is considered the father of Western medicine? C. Organic acid producers d) 2 micrometer in diameter c) Spirillum volutans D. The organism must be able to grow in an easily available nutrient medium. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. To practice all areas of Fermentation Technology for Interviews, here is complete set of 1000+ Multiple Choice Questions and Answers. View Answer, 5. Q. Q.1: Screening of microorganisms includes . 6. c) Gram-negative bacteria A) substrates are added to the system all at once and runs until product is harvested. View Answer. For this dilution, it may be said that the solution was diluted _______ The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. A. Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. 11. c) MacConkeys Agar plate