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A. c) 1000-fold a) Edwin John Butler Crowded plate technique Clarification: The optimum temperature for the growth of an organism should be above 40C. a) DNA polymerase III 2. The following diagram shows an adenovirus: ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. Crowded plate technique a) Crowded plate technique b) hydrophilic barrier a) Growth Factor producers Clarification: Auxanographic technique proceeds with 2-plate preparation. c) Breads View Answer, 7. A) are among the most widely used preservatives. The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme The bacterial cell then elongates and splits into two daughter cells each with identical DNA to the parent cell. B. the virus must be able to cross-link red blood cells directly. C) maintain a high osmotic pressure to kill microorganisms. Which organisms show the zone of inhibition grown on a Petri plate? It doesn't include viruses and prions because they are classified as non-living. 4. c) Mycobacterium tuberculosis Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. Wish you the best in your endeavor to learn and master Microbiology! 10-fold Prokaryotes can be found everywhere on our planet, even in the most extreme environments. Protozoa that eat other organisms are known as _______________ ticks and fleas. Defined media and complex media are two broad classes of culture media used in microbiology. View Answer, 45. 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. View Answer, 44. View Answer, 15. These microorganisms have been often under-appreciated and under-studied. c) prophage Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. 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. Set up a series of 1/10 dilutions: a. Chapter 2: Classification of Medically important Bacteria MCQs. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. This reduces the cooling costs in large scale fermenters. Primary treatment removes material that will either float or readily settle out by gravity. 6. All of the above. a) Streptomyces sp. View Answer, 5. b) Xanthophycophyta The "flash method" or "high temperature short time" method exposes fluids to a) Nitrospina gracilis The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. d) Indicator dye technique 25. a)Microaerophilic. The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. First link in any food chain is usually green plants because. What are the methods of isolating the pure culture of microorganisms? C) use of microbes in sewage and pollution control. Which of the following is not a subfield of microbiology? What is high throughput screening used for? 6. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? The microorganisms secrete the enzymes into their nutrient medium to make better use of it. View Answer, 43. Yeast cells are good source of. A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. b) Rhodospirillum 1. Fermentation Technology Questions on Isolation and Screening of Industrially Important Microbes. View Answer, 31. The Gram staining is one of the most crucial staining techniques in microbiology. Answer: D Which among the following are microaerophilic bacteria? Pathogen testing is used to identify pathogenic organisms in manufacturing environments, ingredients or finished products that could harm the consumer. answer choices. d) intercalating agents Water treatment typically requires three stages to make it potable from sewage. lauren conrad and stephen colletti /; 2. Which of the following method is not used in isolation and screening of desired microorganisms? 2. It changes from yellow at pH 3.0 to blue-violet at pH 4.6. 2. Clarification: Phenolphthalein has a pH range between 8.0 10.0. Everything you need to know about water and wastewater microbiology. b) Magnifying lens Enrichment culture technique was developed by_________, 16. consent of Rice University. b) light waves View Answer, 9. 26. c) Spirochaeta Secondary screening may be qualitative and quantitative in its approach. View Answer, 14. The process is repeated several times until the requirement is met. 10. Sulphur can be utilized by bacteria in the a. (Or show it to your microbiology professor, just for fun.) 3. About Oracle NetSuite. c) Peritrichous c) magnetic fields B. Thymol blue View Answer, 41. Want to cite, share, or modify this book? A) heat below 100 oC. View Answer, 28. a) Thiobacillus thiooxidans c) Microviridae b) 10-fold c) cytoplasm All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? 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? screening of microorganisms includes mcq. ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. B. A) True Chapter 4: Clinical Virology MCQs. Microorganisms are minute, unicellular organisms that aren't visible to the naked eye. D. Indicator dye technique. c) Enrichment Culture technique The presence of E. coli in a drinking water sample almost always indicates recent fecal contamination, meaning there is a greater . The section contains MCQs on size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall. In this process desired microorganism is generally isolated from a natural environment like soil, which . a) chemical compounds d) Coliforms Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. b) cellulose 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) cell wall Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . 14. D. American Type Classifier and Collection. magic island poem tone Consult Now Growth Factor producers Prokaryotes are unicellular microorganisms whose cells have no nucleus. c) Lactobacilli c) Streptococcus thermophilus (3) Attempt to synthesized secondary metabolites outside of their natural environment. d) Pour plate are not subject to the Creative Commons license and may not be reproduced without the prior and express written d) both aerobic and anaerobic cells False. d) American Type Classifier and Collection A) production of alcoholic beverages by microorganisms. A BV test is done in a similar way as a pelvic exam or Pap smear. Which of the following method is not used in isolation and screening of desired microorganisms? C) selecting microbial strains that lack a feedback system. b) Monotrichous (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. d) Amino acid producers 8. Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. Secondary screening can give information about, (1) The genetic instability in microbial cultures, (2) Number of products produced in a single fermentation, 8. Which of the following plate is used to detect and isolate organic acid producers? 1. It belongs to the phthalein family that is employed as an acid-base indicator. Which of the following method proceeds with 2-plate preparation? View Answer, 30. D. Indicator dye technique. d) gene 4. 7. Chapter 3: Classification of Viruses MCQs. View Answer, 4. Note when energy and additional compounds are necessary for any of these mechanisms to operate. c) Spirillum volutans 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. False. a) Chemical and biological assay c) Enrichment Culture technique requires five blood samples . Crowded plate technique The screening is isolation and detection of microorganisms of interest. Some strains, however, can cause illness. 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. The section contains MCQs on microorganisms, industry, industrial uses of bacteria, molds and yeasts, genotypic changes, bacterial recombination and conjugation, bacterial transduction and transformation. a) Killing all microorganisms. Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of _____________ 2011-2023 Sanfoundry. b) The examination of the infection sites, c) They are prokaryotes in cellular organization. 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. 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. d) 5 percent B. Auxanographic technique c) DNA polymerase I Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? 16) A bacteriological stain also known as the differential stain is used for the identification of acid-fast organisms, Which of the following metabolic property differentiate the pink-colored colonies of. B. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. and you must attribute OpenStax. d) chitin, cellulose, or hemicellulose (4) Attempt to Stain microorganisms. Crowded plate technique A. Crowded plate technique is used for screening of____________. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. this would be absolutely amazing. d) Indicator dye technique You can also prevent infections through: Hand-washing. c. confining long hair and loose clothing . b) ribitol residues c) parasitic infection Full-form of ATCC is _________ Answer: 1. a) phospholipids Who is considered the father of Western medicine? Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? Multiple Choice. Avoid contaminated food and water. The section contains multiple choice questions and answers on bioenergetics principles, energy production by photosynthesis, anaerobic and aerobic processes. 9. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. 5. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo 4.1: Prokaryote Habitats, Relationships, and Microbiomes. Which among the following is not an ammonia-oxidizing bacteria? c) fecal streptococci Label these plates 1/10 3 through 1/10 6. Several microbes are useful to humans in diverse ways like in household products, industrial products, agricultural products, etc. Which of the following statements is correct regarding secondary screening________. 1999-2023, Rice University. In the following diagram, what does the question mark represent?a) Ciliab) Flagellac) Haird) PseudopodiaAnswer: b For which viral disease, vaccine has been recently developed through the use of tissue culture? View Answer, 5. c) Enrichment Culture technique a) Final treatment b) gamma rays Which of the following is used in electron microscope? Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi . View Answer, 27. The colour of plate changes from red to yellow in the zone of organisms producing organic acid. 6.8 - 7.2 b. Ans: The steps adopted in a typical sewage treatment plant are as given below: ADVERTISEMENTS: How do you isolate microorganisms in the air? C. Enrichment Culture technique c) Robert Koch Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. 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. A. a) Leuconostoc mesenteroides Urinary tract infection was suspected, urine sample and swab specimen were taken and cultured on suitable agar media, a microscopic examination was performed. C) 72 oC for 15 seconds. d) Indicator dye technique b) Study of animals and their family Growth of bacteria or microorganisms refer to __________________ Air Sampling. Each daughter cell is a clone of the parent cell. c) 5 8 Which of the following foods is NOT made by fermentation? a) Study of molecules that are visible to human eyes C) are products that require additional processing before they can be packaged. a) Crowded plate technique Which of the following method is used for the isolation of mutants? C) alcohol. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. A) radiation. View Answer, 42. Phosphorus is essential component of __________ Q. Q.1: Screening of microorganisms includes . C) sugar. 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 . Answer: 4. b) Antibiotic producers 2. c) holozoic 7. 14. c) Chemical assay Done in one or few steps. View Answer, 40. b) Rabies b) Jenner d) Physical assay c) Bacillus thuringiensis Thank you so much for sharing. Answer: B The organic acid producers produce acid which changes the colour of media and is thus detected easily. Which of the following is a correct usage of binomial nomenclature? What does a viral DNA becomes after being associated with the bacterial chromosome? It is 50,000X magnified image of a bacterium. View Answer, 2. 2. The section contains questions and answers on light microscope, microbial Stains, transmission and scanning electron microscope. Answer: B d) Coxiella burnetii Place the gram of soil into the first tube with saline and SHAKE WELL. Clarification: The pH range of Bromophenol blue is 3.0 4.6. You will lie on your back on an exam table, with your feet in stirrups. True a) Treponema 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. Clarification: Phenol Red plate is used to detect and isolate organic acid producers. 3. 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. c) chitin 3.0 4.6 B. Auxanographic technique View Answer, 20. What is required for proper isolation of microorganisms? 5. Which of the following are the growth morphology of the protozoa? d) Photosynthetic sulfur bacteria 4. Microbes can live in highly acidic as well as an alkaline medium. 4. Report an issue. During the test, You will take off your clothes below your waist. Which of the following are true for cytoplasmic membrane? It is the organization which has the largest department of Research and Development. View Answer, 17. Contact Us. It is colourless at pH 8.0 and becomes red at pH above 10.0. View Answer. Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a a) above 1 percent A. B) mass, controlled culture of microbes to synthesize products. 6. (3) It does not provide many ideas about the production or yield potential of microorganisms. d) Measles d) 2-fold c) carbohydrates Wash your hands with soap and water for at least 20 seconds. Therefore, the exact composition of a defined medium is known. A. 30 seconds. c) Binary fission c) nucleotides As primary screening allows the detection and isolation of microorganisms which posses, potentially interesting industrial applications. A) retards growth of Staphylococcus aureus. b) Fungi Which of the following dye is colourless at acidic pH and becomes red at basic pH? 15. View Answer, 23. d) cathode rays Microbes are certainly ideal for biotechnology. View Answer, 3. Answer: A a. Streptococcus pyogens b. Except where otherwise noted, textbooks on this site answer choices. Which of the following are present in teichoic acids? a) Micrococci Plasmodium divides by which of the following method most commonly? b) Auxanographic technique the virus must not be able to lyse red blood cells. d) Eyepiece lens Juli 2022 b) RNA polymerase a) glycerol residues 6. 1. View Answer, 48. View Answer, 36. b) below 1 percent c) Saccharomyces cerevisiae Dec 20, 2022 OpenStax. 12. 12. B) are by-products of metabolism that are not important to microbe function. d) Bacillus polymyxa Microbiology is the study of : 3. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes a) American Type Culture Collection b. c) The optimum temperature for the growth of an organism must be above 50C Methyl red 13. b) Thymol blue 11 junio, 2022. Which of the following enzyme removes the RNA primer with its 5-nuclease activity? 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. MCQ on Industrial Microbiology. b) irregular A) are essential to microbe function. Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. c) hydrophobic barrier C) inoculation, fermentation, downstream processing, removal of waste. 1. C. Enrichment Culture technique then you must include on every digital page view the following attribution: Use the information below to generate a citation. c) beta-glucosidase d) Hanging Drop technique Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? D) starch. It should have a fast rate of kill of micro-organisms. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. It is important to find and resolve the source of the contamination. C) is used to prevent growth of halophiles. True. View Answer, 24. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? 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. D) exposure. d) All of the mentioned Which of the following method proceeds with 2-plate preparation? Antibiotic producing microorganisms can be detected by the method__________, 5. 2. View Answer, 10. A. Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. (4) This may be accomplished by paper, thin layer, chromatographic technique. c) rod shaped (3) It provides information on whether the product formed by microorganisms is new or not. Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. View Answer, 29. a) Shortest wavelength of visible light used 4. Which of the following method is not used in isolation and screening of desired microorganisms? The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. D) all of the above. a) Cyanobacteria, Fungi and Viruses d) Study of microscope 12. Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . All Rights Reserved. includes 6 urine samples. A) substrates are added to the system all at once and runs until product is harvested. d) appendaged bacteria (2) Attempt to kill microorganisms outside of their natural environment. 6. 8.0 10.0 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. Automatic Type Counter & Classifier On the second day, the symptoms got worse and she was taken to the hospital. Which of the following is NOT a criterion for the choice of an organism? Good work practices include, a. smelling and tasting chemicals . Lipopolysaccharide in cell walls is characteristic of? d) Fungi A. Allow discarding of many valueless microbes. Answer: A View Answer, 46. b) Streak-plate C) new batches of microorganisms are screened for increased yield. b) Streptococcus lactis Salting, as a preservative, 1g of soil is added to that test tube and the soil is allowed to settle down. View Answer, 35. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. a) parasitic 10. View Answer, 18. B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. 100-fold C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. 8. 44) Which of the following microorganisms can grow only as strict intracellular parasites? 8. 10. It is a non-profit organization and a key resource for medical research. MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. 3. Who was the first to observe "animalcules" under the microscope? 8. d) glucose residues Engineering 2023 , FAQs Interview Questions. What is Microbiology? 3. View Answer, 16. . 2. View Answer, 13. c) Objective lens b) mutualistic 38) All of the following statements are correct about the most common bacteriological media called sheep blood agar that is used in the microbiology laboratory, b) Used for the culture of common fastidious bacteria, c) It is used for the culture of hemolytic bacteria. uses 100 grams of glucose in a 300ml solution. d) Lophotrichous Full-form of ATCC is _________. These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. You can also check this one and can share your opinions on Cell Culture Plates Product. The section contains MCQs on chemotherapy historical highlights, antibiotics and their actions, microbiological assay of antibiotics, antifungal, antiviral and antitumour antibiotics.