C. Enrichment Culture technique a) Growth Factor producers A. American Type Culture Collection A) retards growth of Staphylococcus aureus. Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. It includes the physical processes of screening, comminution, grit removal, and sedimentation. b) Microbacteria Which of the following are important primary screening techniques? View Answer, 47. View Answer, 45. b) aerobic cells a) viruses 6. 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. 6.8 - 7.2 b. Who was the first to observe animalcules under the microscope? The principal microorganism for yogurt is ______________________ Which of the following method can be used to determine the number of bacteria quantitatively? Crowded plate technique 3. Who was the first to observe "animalcules" under the microscope? Which of the following is the primary screening method? View Answer, 10. View Answer, 9. 4. 6. c) Secondary treatment 6. Which of the following types of microorganisms is photosynthetic? 3. c) Enrichment Culture technique b) Automatic Type Counter & Classifier A test tube contains 9ml distilled water. C) are products that require additional processing before they can be packaged. 1. this would be absolutely amazing. Viral hemagglutination assays only work with certain types of viruses because. 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. View Answer, 15. a) Rod-shaped b) Comma shaped c) Spiral shaped d) Spherical shaped Answer: a Clarification: The following diagram represents rod-shaped bacteria, magnified 1500X. View Answer, 12. b) Biological assay The "flash method" or "high temperature short time" method exposes fluids to The well-isolated colonies are antibiotic producers with the zone of inhibition. MCQ.9):Which bacteria have flagella of amphitrichous type means the flagellum are present at both the sides? Chrysolaminarin is the reserved food of ___________________ d) cellulase A. A) True Clarification: The Antibiotic producers show the zone of inhibition. Which of the following is NOT a criterion for the choice of an organism? 5. 4. D. Indicator dye technique. 14. Which among the following group of microorganisms are found in the ducts of cows mammary glands? Report an issue. b) hydrophilic barrier The microorganisms are chosen based on the rest three criteria. During the test, You will take off your clothes below your waist. View Answer, 2. Who is known as the father of Microbiology? View Answer, 32. c) Enrichment Culture technique B) False, Mass-produced microbial cells can be used as livestock feed. We recommend using a B. d) Coxiella burnetii It is important to find and resolve the source of the contamination. b) Gram-positive organisms d) Coliforms View Answer, 8. A. Sulphates are reduced to hydrogen sulphide by _____________________ What does a viral DNA becomes after being associated with the bacterial chromosome? screening of microorganisms includes mcqwarning signs for a deteriorating patient with covid 19 infection 2022.07.03 18:36 18:36 c. confining long hair and loose clothing . View Answer, 7. 8. View Answer, 50. A) organic acids. (retrieve https://www.learningsta.com, April 2021) 2.0 SCREENING . a) Leuconostoc citrovorum You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. In which of the following treatment involve oxidation of organic constituents of the wastewater? a) glycerol residues b) cellulose Your email address will not be published. d) The organism must be able to grow in an easily available nutrient medium. 1. 10. Set up a series of 1/10 dilutions: a. C) sugar. Which of the following foods is NOT made by fermentation? Industrial microbiologists use "tricks" to increase the amount of chosen end product; this may include Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? Home Fermentation Technology Objective Questions 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers. Microbes are certainly ideal for biotechnology. Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. a) cellulose dehydrogenase D) removal of waste, inoculation, fermentation, downstream processing. includes 6 urine samples. View Answer, 48. 100-fold screening of microorganisms includes mcq. Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . 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. d) Nitrosovibrio tenuis Bacteria having clusters of flagella at both poles of cells are known as? 5. Nitrates maintain the red color of preserved meats and MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. b) The organism must be able to produce a high yield of product. the virus must be able to cross-link red blood cells directly. c) American Type Counter Collection c) 2.5 to 4 percent uses 50 grams of glucose in a 500ml solution. b) Mesophile and psychrophile 1. a) above 1 percent A) radiation. a) DNA polymerase III citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. d) Cristispira False. The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. 3. 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 . 11. A BV test is done in a similar way as a pelvic exam or Pap smear. a) Cyanobacteria, Fungi and Viruses c) Desulfotomaculum sp. The section contains MCQs on phages structure and morphology, bacterial viruses replication, lysogeny and lytic. microscopic with a fried egg shape. 9. Growth of bacteria or microorganisms refer to __________________ How do you isolate microorganisms from the soil? Which of the following is the standard resource for identifying bacteria? c) hydrophobic barrier b) 8.0 10.0 Which is the secondary stage? All Rights Reserved. It changes from yellow at pH 3.0 to blue-violet at pH 4.6. In this process desired microorganism is generally isolated from a natural environment like soil, which . The section contains questions and answers on diseases caused by staphylococcus, streptococcus, corynebacterium, aerobic and anaerobic gram, viruses containing single and double stranded dna. c) Study of organisms that are not visible to naked eyes Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single circular chromosome. c) chitin Which of the following was NOT a kingdom in Linnaeuss taxonomy? b) RNA polymerase 7. 2. A) True C) selecting microbial strains that lack a feedback system. c) MacConkeys Agar plate Which microorganism(s) among the following perform photosynthesis by utilizing light? Which of the following is the example of encapsulated gram-positive bacteria? lauren conrad and stephen colletti /; 2. Sanfoundry Global Education & Learning Series Fermentation Technology. It is done by using paper, thin layer or other chromatographic techniques. 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. 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? Crowded plate technique View Answer, 3. pH, cations, thymidine or thymine, use of supplemented media). B. Auxanographic technique The screening is isolation and detection of microorganisms of interest. d) appendaged bacteria Which of the following method is used for the isolation of mutants? b) Budding The production of substances in industrial microbiology occur in the sequence: View Answer, 43. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? b) False d) Indicator dye technique 11. (1) It is useful in sorting microorganisms that have real commercial value. In the following diagram, what does the question mark represent?a) Ciliab) Flagellac) Haird) PseudopodiaAnswer: b c) Peritrichous B. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . c) rod shaped Full-form of ATCC is _________ 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. b) transposons a) Leuconostoc mesenteroides Crowded plate technique is used for screening of____________. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. d) mitochondrial membrane Through primary screening only few or many microorganism that produce a industrially . c) The optimum temperature for the growth of an organism must be above 50C. d) proteins True Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a A) manipulating the growth environment. d) Bacillus polymyxa The screening is isolation and detection of microorganisms of interest. d) Mycoplasmas 7. d) Candida milleri B. Biology Multiple Choice Questions on Microbes. It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. the virus must not be able to lyse red blood cells. It is done by using paper, thin layer or other chromatographic techniques. APT test C. Elastase I D. Quantitative fecal fat testing: 6. c) Lactobacilli A) are essential to microbe function. b) Viruses c) UV light View Answer, 35. c) nucleotides A) heat below 100 oC. a) viral infection D) all of the above. View Answer, 16. d) hydrophobic barrier and site of generation of protonmotive force a) Condenser lens View Answer, 10. Answer: D 2. Which of the following types of mutants can be isolated using the replica plate technique? View Answer, 4. Prokaryotes are unicellular microorganisms whose cells have no nucleus. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo A food chain comprising birds, green plants, fish and man. A. a) x-rays D. Hanging Drop technique. Automatic Type Counter & Classifier Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of _____________ a) elongated 7. d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture 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. A. c) The optimum temperature for the growth of an organism must be above 50C 11 junio, 2022. 9. Complex media are prepared using digests of microbial, animal, or . Definition: true bacteria; bacteria excluding the archaea. All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. 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. View Answer, 12. c) Mumps a) Alcoholic beverages Antibiotic producers a) Gram-negative organisms These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . c) Chemical assay b) Rabies B. Auxanographic technique 4. d) intercalating agents b) Antibiotic producers (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. 6. Microbiology is the study of : 3. b) Monotrichous Which of the following plate is used to detect and isolate organic acid producers? 11. a) Crowded plate technique Which isolation technique is most effective? Easy detection of the small percentage of useful microorganism. b) an increase in number of cells Several microbes are useful to humans in diverse ways like in household products, industrial products, agricultural products, etc. a) 3.0 4.6 Note when energy and additional compounds are necessary for any of these mechanisms to operate. 8. Identify bacteriophage. 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. The section contains multiple choice questions and answers on soil microorganisms interactions, nitrogen, carbon and sulphur cycles, aquatic environment, aquatic microorganisms techniques and productivity. 1. C. Enrichment Culture technique View Answer, 6. a) Shortest wavelength of visible light used Rickettsia species are carried by. Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. 13. View Answer, 13. D. Amino acid producers. 5. D. Indicator dye technique. D) starch. You can also prevent infections through: Hand-washing. All Rights Reserved. B) False, Yeast cells prefer aerobic conditions to multiply in number. Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. Answer: A Your health care provider will insert a special tool called a speculum into your vagina. c) holozoic Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? True 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. Which of the following foods is NOT made by fermentation? 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. c) Spirochetes Which of the following method is not used in isolation and screening of desired microorganisms? OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. a) peptidoglycan Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . d) Lophotrichous View Answer, 31. This book uses the Who proposed that swamps might harbor tiny, disease-causing animals too small to see? Which of the following microorganism is eliminated in canned foods? For e.g., cellulose producers grow on nutrient medium supplied with cellulose. D. Rose Bengal Agar plate. a) changes in the total population b) Atrichous bacteria. 2. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . Crowded plate technique C. American Type Counter Collection 5. Name three reserve materials synthesized by microorganisms and note which microbial groups