screening of microorganisms includes mcq screening of microorganisms includes mcq

d) intercalating agents View Answer, 4. 250+ TOP MCQs on Microbes in Industrial Products-4 and Answers, 300+ TOP MCQs on Microbes in Human Welfare and Answers, 250+ TOP MCQs on Microbes in Household Products-1 and Answers, 250+ TOP MCQs on Microbes in Production of Biogas and Answers, 250+ TOP MCQs on Microbes in Household Products-2 and Answers, 250+ TOP MCQs on Microbes in Industrial Products-3 and Answers, 250+ TOP MCQs on Microbes in Sewage Treatment and Answers, 250+ TOP MCQs on Microbes in Industrial Products-1 and Answers, 250+ TOP MCQs on Microbes in Industrial Products-2 and Answers, 250+ TOP MCQs on Microbes as Biofertilizers and Answers, [12 Class Notes] MICROBES IN HUMAN WELFARE Biology CBSE, 250+ TOP MCQs on Microbes as Biocontrol Agents and Answers, 250+ TOP MCQs on Microbes in Metal Containing Habitat and Answers, 250+ TOP MCQs on Microbes in Bioleaching Process and Answers, 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers, 300+ TOP MCQs on Bioremediation and Answers, 250+ TOP MCQs on Heat Transfer Applications Thermal Processing and Answers, 250+ TOP MCQs on Environmental Issues Water Pollution and its Control and Answers, 250+ TOP MCQs on Biotechnology Applications Ethical Issues and Answers, 250+ TOP MCQs on Hydraulic Fracturing Frac Job Design and Answers. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. b) Streptomyces olivaceus 30 seconds. and you must attribute OpenStax. C. 1000-fold c) UV light Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. As an Amazon Associate we earn from qualifying purchases. Some of the frequently asked exam questions are as follows:-. a) Leuconostoc citrovorum View Answer, 35. Crowded plate technique Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? Cellulose is degraded to cellobiose by the enzyme __________________ Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. Which of the following statements is correct regarding secondary screening________. c) The optimum temperature for the growth of an organism must be above 50C 1. Answer: B C) maintain a high osmotic pressure to kill microorganisms. d) Candida milleri Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. Which of the following microorganism is eliminated in canned foods? c) Chlorella c) Enrichment Culture technique Glycosylated hemoglobin: causes sickle cell anemia. c) Crick B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. 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, The Society's role is to help unlock and harness . Which of the following is a correct usage of binomial nomenclature? Which of the following method is not used in isolation and screening of desired microorganisms? Which is the secondary stage? B) False, When in doubt, throw it out. Indeed, until Anton von Leeuwenhoek invented . A) production of alcoholic beverages by microorganisms. Name three reserve materials synthesized by microorganisms and note which microbial groups The section contains MCQs on phages structure and morphology, bacterial viruses replication, lysogeny and lytic. b) 10-fold Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. Which scientist proposed adding a kingdom for protists? uses 50 grams of glucose in a 500ml solution. A) heat below 100 oC. a) Final treatment (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. Which of the following types of mutants can be isolated using the replica plate technique? Easy detection of the small percentage of useful microorganism. 8.0 10.0 a) Neisseria gonorrhoeae. 5. Protozoa that eat other organisms are known as _______________ c) beta-glucosidase It includes the physical processes of screening, comminution, grit removal, and sedimentation. Which of the following are the growth morphology of the protozoa? A 19-year-old male living in a tropical region of India visited the hospital. d) Antoni van Leeuwenhoek 4.1: Prokaryote Habitats, Relationships, and Microbiomes. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? Which of the following is the most accurate method for microbial assay of antibiotics? screening of microorganisms includes mcq; screening of microorganisms includes mcq. A. A. Clarification: The pH range of Bromophenol blue is 3.0 4.6. The methods for isolation and screening are a crowded plate, auxanography, enrichment culture and use of indicator dyes. Which of the following method is not used in isolation and screening of desired microorganisms? What is the name of the procedure performed under sterile conditions to eliminate It should be active and stable and environmentally safe. 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 . (1) Its a process for the detection and isolation of microorganisms of our interest. b) plaque b) Nitrosococcus oceanus d) appendaged bacteria Everything you need to know about water and wastewater microbiology. _______ are the agents that act as carriers of a pathogen and spread diseases. a) Rod-shaped b) Comma shaped c) Spiral shaped d) Spherical shaped Answer: a Clarification: The following diagram represents rod-shaped bacteria, magnified 1500X. c) carbohydrates Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . During their metabolism, microbes produce chemicals, some of which are used by human beings. Set up a series of 1/10 dilutions: a. a) 100-fold 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. 10. Answer: C Answer: B a) cellulose dehydrogenase Which of the following enzyme removes the RNA primer with its 5-nuclease activity? Which among the following group of microorganisms are found in the ducts of cows mammary glands? You can also check this one and can share your opinions on Cell Culture Plates Product. d. using damaged equipment and glassware. c) Secondary treatment c) Binary fission View Answer, 8. a) Cyanobacteria, Fungi and Viruses These are non-enveloped viruses with a double-stranded DNA genome. Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. View Answer, 27. d) hydrophobic barrier and site of generation of protonmotive force Which of the following foods is NOT made by fermentation? 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. 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. A. Phenol red plate Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. View Answer, 3. A) True It is colourless at pH 8.0 and becomes red at pH above 10.0. It is the organization which has the largest department of Research and Development. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. c) Pour-plate and spread plate The reason they are called microorganisms is that you can only see them when you use a microscope. c) magnetic fields d) 2 micrometer in diameter b) Potato Dextrose Agar plate 2. b) Treponema pallidum D) all of the above. a) Nitrospina gracilis (2) It determines which microorganisms can produce a compound. View Answer, 49. Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. All Rights Reserved. b. not washing hands before and after lab . The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. b) Xanthophycophyta 2. Answer: C Rickettsia species are carried by. Crowded plate technique a) Growth Factor producers 8. b) transposons d) Lactobacillus acidophilus The organic acid producers produce acid which changes the colour of media and is thus detected easily. 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. d) Indicator dye technique Through primary screening only few or many microorganism that produce a industrially . (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. A) are among the most widely used preservatives. a) anaerobic cells 7. C) new batches of microorganisms are screened for increased yield. Salting, as a preservative, coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. 11. B. a) Streptomyces sp. B) are by-products of metabolism that are not important to microbe function. the virus must be able to lyse red blood cells. 12. Microorganism Definition. A food chain comprising birds, green plants, fish and man. A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. d) Nitrosovibrio tenuis Which of the following method is used for the isolation of mutants? D) small-scale production is used to synthesize product. View Answer, 32. c) 1000-fold This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. A) True Answer: D 4. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. What is required for proper isolation of microorganisms? C. Phenolphthalein c) 2mm in diameter 1. Categories: . D) are harvested during the exponential phase of growth. b) Ferdinand Cohn a) electron beams and magnetic fields View Answer, 29. All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. Some strains, however, can cause illness. The section contains multiple choice questions and answers on morphology, reproduction, physiology and fungi cultivation, fungi classification and special interest. Which microorganism(s) among the following perform photosynthesis by utilizing light? the virus must not be able to lyse red blood cells. a) viral infection B) inoculation, downstream processing, fermentation, removal of waste. Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. a) Phenol red plate View Answer. D. Phenol red. Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. Which of the following is the example of encapsulated gram-positive bacteria? Which of the following is not microbe?a) Bacteriab) Protozoac) Viroidsd) WormsAnswer: dClarification: Microbes are diverse in nature and include- protozoa, bacteria, fungi and microscopic animal and plant viruses, viroids and also prions that are proteinaceous infectious agents. The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. 1. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. 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. On the second day, the symptoms got worse and she was taken to the hospital. 4. 7. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. Yeast cells are good source of. 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. Chapter 2: Classification of Medically important Bacteria MCQs. C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. d) American Type Classifier and Collection A) True 1. Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. c) fecal streptococci B) using small scale containers to concentrate production. In this process desired microorganism is generally isolated from a natural environment like soil, which . B. What are the methods of isolating the pure culture of microorganisms? The well-isolated colonies are antibiotic producers with the zone of inhibition. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. C. Enrichment Culture technique a) Gram-negative organisms B. Answer: B The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. 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. View Answer, 34. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? a) Algae 4. a) peptidoglycan It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. Primary treatment removes material that will either float or readily settle out by gravity. Which of the following method proceeds with 2-plate preparation? Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. Each of the following organisms is an important cause of urinary tract infections except: a. Klebsiella pneumoniae b. Escherichia coli c. Bacteriodes fragilis d. Proteus mirabilis; A 30-year woman has non-bloody diarrhea for the past 14 hours. c) Chlorophycophyta a) Alcoholic beverages How to avoid the spreading of Microorganisms has been discussed. Answer: C A. The bacterium Staphylococcus aureus is which type of bacteria? b) Fungi True. 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. Secondary screening may be qualitative and quantitative in its approach. D. Hanging Drop technique. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. Which of the following statement is correct regarding primary screening________. 2. Viral hemagglutination assays only work with certain types of viruses because. Answer: B 3. chp 25 microbiology 211 mcq. Microorganisms are minute, unicellular organisms that aren't visible to the naked eye. b) 0.5 to 1.0 micrometer in diameter Which of the following is NOT a criterion for the choice of an organism? Which of the following is a family of lambda phage viruses? d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. 5. (1) It is useful in sorting microorganisms that have real commercial value. a) Study of molecules that are visible to human eyes E. coli is a sub-group of the fecal coliform group. c) 2.5 to 4 percent Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. a) S mallpox b) True d) Coxiella burnetii True (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. MCQ.8): In which of the following bacterial condition, fimbriae helps the bacteria to stick to the mucous membrane of the host? Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. Our Environment Class 10 MCQ Question 6. Your health care provider will insert a special tool called a speculum into your vagina. d) Primary treatment a) Methyl red The respiratory chain of bacteria is associated with the _____________ False. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? (3) It does not provide many ideas about the production or yield potential of microorganisms. It is further followed by secondary screening, to check the capabilities and gain information about these organisms. The following diagram shows an adenovirus: ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. b) The organism must be able to produce a high yield of product. 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. What does a viral DNA becomes after being associated with the bacterial chromosome? b) Mesophile and psychrophile 2011-2023 Sanfoundry. What are the cell wall structural components of fungi? 2. View Answer, 5. View Answer, 12. c) hydrophobic barrier For which viral disease, vaccine has been recently developed through the use of tissue culture? a) Vibrio cholerae d) cathode rays View Answer, 30. d) Phenol red The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo In this process the bacterium, which is a single cell, divides into two identical daughter cells. MCQ on Industrial Microbiology. Answer: A. 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. The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. c) neither aerobic and anaerobic cells Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. Contact Us. Allow discarding of many valueless microbes.