screening of microorganisms includes mcq

screening of microorganisms includes mcq

Biology Multiple Choice Questions on Microbes. c) an increase in the size of an individual organism 6.8 - 7.2 b. b) Microbacteria What is required for proper isolation of microorganisms? a) Leuconostoc mesenteroides (2) Chemical, physical and biological properties of a product are also determined during secondary screening. d) intercalating agents 4. D. Indicator dye technique. 3. 2. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. What does a viral DNA becomes after being associated with the bacterial chromosome? b) Auxanographic technique This quiz is designed to help you assess how well you have learned the content of this lesson. Which of the following microorganism is eliminated in canned foods? uses 50 grams of glucose in a 500ml solution. b) Auxanographic technique 7. 1. Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. View Answer, 6. Which of the following is a correct usage of binomial nomenclature? d) Hanging Drop technique 5. a) fats Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? C. Enrichment Culture technique 3. b) coliforms View Answer, 27. Wash your hands with soap and water for at least 20 seconds. 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, MCQ.8): In which of the following bacterial condition, fimbriae helps the bacteria to stick to the mucous membrane of the host? Auxanography technique is employed for detecting microorganisms able to produce__________. Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? Answer: A The principal microorganism for yogurt is ______________________ Answer: B Chapter 2: Classification of Medically important Bacteria MCQs. c) Secondary treatment Secondary screening may be qualitative and quantitative in its approach. View Answer, 9. For this dilution, it may be said that the solution was diluted _______ Which of the following morphological characteristics is an important identification characteristic of. Microorganisms are minute, unicellular organisms that aren't visible to the naked eye. 5.6 - 8.2 form of c. 3.0 - 6.0 d. 8.0 - 14.0 a. Organic compounds b. Inorganic compounds 14. Water treatment typically requires three stages to make it potable from sewage. _______ are the agents that act as carriers of a pathogen and spread diseases. 1g of soil is added to that test tube and the soil is allowed to settle down. A) True Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. c) Enrichment Culture technique View Answer, 10. View Answer, 14. 4. It is colourless at pH 8.0 and becomes red at pH above 10.0. b) Jenner Which of the following enzyme removes the RNA primer with its 5-nuclease activity? B) using small scale containers to concentrate production. A. These microorganisms have been often under-appreciated and under-studied. 1g of soil is added to that test tube and the soil is allowed to settle down. A. In this process desired microorganism is generally isolated from a natural environment like soil, which . 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? c) Study of organisms that are not visible to naked eyes Our mission is to improve educational access and learning for everyone. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. b) Potato Dextrose Agar plate Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? 8. You can also prevent infections through: Hand-washing. Which among the following are Spirochetes? Full-form of ATCC is _________ View Answer, 21. B. Rickettsia species are carried by. 5. B. The microorganisms are chosen based on the rest three criteria. Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. Which of the following method is not used in isolation and screening of desired microorganisms? B. Auxanographic technique Pathogen testing is continuously performed throughout the production . MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. D) are harvested during the exponential phase of growth. b) mycotic infection Antibiotic producing microorganisms can be detected by the method__________, 5. 8. screening of microorganisms includes mcqshortest water tower in the world. Some of the frequently asked exam questions are as follows:-. The lesson covers the complete explanation of class 8 Chapter 2 Microorganisms.Topics covered are Introduction to Micro-organisms and microbiology, different types of Micro-organisms, Useful and Harmful Micro-organisms. Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. 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. b) The organism must be able to produce a high yield of product. c) Organic acid producers a) Thiobacillus thiooxidans b) Budding The section contains MCQs on chemotherapy historical highlights, antibiotics and their actions, microbiological assay of antibiotics, antifungal, antiviral and antitumour antibiotics. On the second day, the symptoms got worse and she was taken to the hospital. [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). What is the name of the procedure performed under sterile conditions to eliminate uses 100 grams of glucose in a 300ml solution. Crowded plate technique 45) What are the types of general characteristics that are important for the identification and classification of protozoa? Which of the following inhibits DNA replication? a) plasmid Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. 1999-2023, Rice University. Trophic level in an ecosystem represents. c) Mumps 2. 2. a) viral infection c) neither aerobic and anaerobic cells b) False 7. (2) Attempt to kill microorganisms outside of their natural environment. B) sulfites. C) maintain a high osmotic pressure to kill microorganisms. View Answer, 37. View Answer, 19. Which of the following is a type of fungal microorganism? View Answer, 13. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? d) gene A routine GTT: is three hours long. A) are among the most widely used preservatives. a) Condenser lens 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. d) 5 percent A. b) an increase in number of cells Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. Microbes can live in highly acidic as well as an alkaline medium. [1] Often the first test performed, gram staining involves the use of crystal violet or methylene blue as the primary color. a) cellulose dehydrogenase B. (1) It is useful in sorting microorganisms that have real commercial value. A) organic acids. Plasmodium divides by which of the following method most commonly? and you must attribute OpenStax. D. Rose Bengal Agar plate. a) Edwin John Butler Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. 1. The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. 6. A food chain comprising birds, green plants, fish and man. A test tube contains 9ml distilled water. Blood C. Electrolytes D. Water: 5. We recommend using a Genetic engineering is also used to improve the biodegradation . c) 2mm in diameter Our members have a unique depth and breadth of knowledge about the discipline. C) are products that require additional processing before they can be packaged. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. What is the fecal test that requires a 3-day specimen? b) Thymol blue True Multiple Choice. b) Gram-positive organisms Tyrocidines are more effective against ___________________ 5. Binary fission begins when the DNA of the bacterium divides into two (replicates). b) hydrophilic barrier Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. 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? consent of Rice University. Which among the following group of microorganisms are found in the ducts of cows mammary glands? Note when energy and additional compounds are necessary for any of these mechanisms to operate. 10. C. Enrichment Culture technique 13. lauren conrad and stephen colletti /; 2. View Answer, 33. C. Enrichment Culture technique d) an increase in the mass of an individual organism 30 seconds. View Answer, 8. 3. Place 6 test tubes into a rack and fill each with 9ml of 0.9% NaCl solution. C. 1000-fold Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single circular chromosome. c) rod shaped Which of the following types of mutants can be isolated using the replica plate technique? 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. d) Eyepiece lens c) American Type Counter Collection this would be absolutely amazing. a) Phenol red plate A 7 year old girl developed a sore throat and fever for 2 days. Nitrates maintain the red color of preserved meats and Primary methods to prevent food spoilage do NOT include Ans: The steps adopted in a typical sewage treatment plant are as given below: ADVERTISEMENTS: B) False, Pasteurization is used to sterilize milk. During their metabolism, microbes produce chemicals, some of which are used by human beings. Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. d) 2-fold c) parasitic infection coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. a) Spread-plate The screening is isolation and detection of microorganisms of interest. 1. d) All of the mentioned 12. d) Multiple fission C) is used to prevent growth of halophiles. C. Enrichment Culture technique a) Cephaleuros The section contains MCQs on selective methods, pure cultures and cultural characteristics. c) Enrichment Culture technique Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. C. Phenolphthalein The screening is isolation and detection of microorganisms of interest. View Answer, 18. d) proteins How do you isolate microorganisms from the soil? a) True a) Nitrospina gracilis What is Microbiology? A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. This is one of the widely used methods and more important. Chrysolaminarin is the reserved food of ___________________ What are the methods of isolating the pure culture of microorganisms? View Answer, 35. 1. Which of the following microorganism produces dextran? Which of the following statements is correct regarding secondary screening________. 5. 5. The section contains MCQs on size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall. lack of cell wall. Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. 10. Which of the following are important primary screening techniques? The screening is isolation and detection of microorganisms of interest. What is the average size of a microbe?a) Less than 1 mmb) More than 1 cmc) Less than 0.1 mmd) More than 0.1 mmAnswer: cClarification: Microbes are microorganisms which have a size less than 0.1 mm. B) inhibit germination of botulism spores. Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. The colour of plate changes from red to yellow in the zone of organisms producing organic acid. View Answer, 11. (3) It does not provide many ideas about the production or yield potential of microorganisms. In the following diagram, what does the question mark represent?a) Ciliab) Flagellac) Haird) PseudopodiaAnswer: b 2. b) Fungi Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? D. Indicator dye technique. c) Breads a) above 1 percent The respiratory chain of bacteria is associated with the _____________ View Answer, 20. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes Microbial enzyme production concentrates on simple hydrolytic enzymes (proteases, amylases, pectinases) that degrade natural polymers such as proteins, starches, or pectin. (1) Screen organic acid-producing microbes. 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. c) DNA polymerase I D. Indicator dye technique. Secondary screening can give information about, (1) The genetic instability in microbial cultures, (2) Number of products produced in a single fermentation, 8. a) Small pox 2. Secondary screening may be qualitative and quantitative in its approach. 5. b) teichoic acid b) 10-fold During the test, You will take off your clothes below your waist. Glycosylated hemoglobin: causes sickle cell anemia. 26. c) chitin Glycolysis can occur in ___________ View Answer, 34. Microbiology MCQ. D. Indicator dye technique. Which of the following is NOT a criterion for the choice of an organism? 2. 12. a) cytoplasmic membrane (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. milk, meat, green vegetables, fruits, etc.) Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . True 8. [2][3] S. aureus is found in the . a) changes in the total population 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. d) spherical View Answer, 6. Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. 11. A) fermentation, downstream processing, removal of waste, inoculation. 3. D. Amino acid producers. View Answer, 10. Industrial microbiologists use "tricks" to increase the amount of chosen end product; this may include a) Lactobacillus B) False, HACCP Hazard Analysis and Critical Control Point uses random samples for quality control of the food supply. d) hydrophobic barrier and site of generation of protonmotive force c) Microviridae In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms? Crowded plate technique is used for screening of____________. a) Regeneration d) Gram-positive bacteria 3. c) Phenolphthalein Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. Cryptococcosis is a disease of ________________ c) Spirochaeta b) Acanthopeltis Besides macroscopic plants and animals, microbes are the major components of biological systems on this earth. Answer: D Which scientist proposed adding a kingdom for protists? The act of phagocytizing pathogenic or foreign particles allows cells of the immune system to know what they are fighting against. Which of the following media is used for screening amylase? Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? For e.g., cellulose producers grow on nutrient medium supplied with cellulose. The bacterial cell then elongates and splits into two daughter cells each with identical DNA to the parent cell. 9. d) Lophotrichous False. Full-form of ATCC is _________. Which of the following is not a subfield of microbiology? a) Growth Factor producers View Answer, 38. Which of the following foods is NOT made by fermentation? Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . c. confining long hair and loose clothing . b) 8.0 10.0 c) Robert Koch Protozoa that eat other organisms are known as _______________ Salting, as a preservative, Report an issue. However, if environmental contamination can enter the system, pathogens could get in too. View Answer, 31. Which of the following is a prokaryotic microorganism? The "flash method" or "high temperature short time" method exposes fluids to Which organisms show the zone of inhibition grown on a Petri plate? d) saprophytic Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a Which one of the following organisms is least likely to cause this illness? D. American Type Classifier and Collection. The section contains questions and answers on diseases caused by staphylococcus, streptococcus, corynebacterium, aerobic and anaerobic gram, viruses containing single and double stranded dna. A. 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. Answer: C 10. The Society's role is to help unlock and harness . Which of the following dye is colourless at acidic pH and becomes red at basic pH? Label these plates 1/10 3 through 1/10 6. b. not washing hands before and after lab . Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. Each daughter cell is a clone of the parent cell. They block floating debris such as wood, rags, and other bulky objects that could clog pipes or pumps. The microorganisms from lakes and rivers can grow at a salt concentration of _________ c) Enrichment Culture technique Aims and objectives. The section contains multiple choice questions and answers on morphology, reproduction, physiology and fungi cultivation, fungi classification and special interest. . A. 14. The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. C) 72 oC for 15 seconds. 4. View Answer, 22. The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. View Answer, 7. 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. b) Syphilis Therefore, the exact composition of a defined medium is known. b) Advanced treatment C. MacConkeys Agar plate The bacterium Staphylococcus aureus is which type of bacteria? Urinary tract infection was suspected, urine sample and swab specimen were taken and cultured on suitable agar media, a microscopic examination was performed. View Answer, 8. b) cellulose Which of the following foods is NOT made by fermentation? As an Amazon Associate we earn from qualifying purchases. As primary screening allows the detection and isolation of microorganisms which posses, potentially interesting industrial applications. celebrities who live in fairfield county ct, nyc dot traffic standard drawings, contemporaries who agreed with franck's argument,

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