screening of microorganisms includes mcq screening of microorganisms includes mcq

It will immensely help anyone trying to crack an exam or an interview. Dec 20, 2022 OpenStax. c) 5 8 View Answer, 49. 6. d) Mycoplasmas Antibiotic producing microorganisms can be detected by the method__________, 5. D) all of the above. 5. 2. D. Indicator dye technique. The section contains MCQs on spirochetes, negative rods, cocci, facultatively anaerobic gram, rickettsias and chlamydias, mycoplasmas, positive cocci and positive bacteria. C. Enrichment Culture technique A. a) viruses Microbes can live in highly acidic as well as an alkaline medium. False. Primary methods to prevent food spoilage do NOT include Which of the following method can be used to determine the number of bacteria quantitatively? Binary fission begins when the DNA of the bacterium divides into two (replicates). It is 50,000X magnified image of a bacterium. 5. View Answer, 28. c) prophage Chemical preservatives do NOT include View Answer, 46. [2] The term for organisms that retain the . View Answer, 24. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. 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. (4) Attempt to Stain microorganisms. Protozoa that eat other organisms are known as _______________ B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. Rhizobium bacteria. A) organic acids. 9. B) False, Mass-produced microbial cells can be used as livestock feed. B. This is one of the widely used methods and more important. 11. A test tube contains 9ml distilled water. The section contains questions and answers on diseases caused by staphylococcus, streptococcus, corynebacterium, aerobic and anaerobic gram, viruses containing single and double stranded dna. Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. 4. A. Gram negative bacteria take the color of safranin stain and appear pink or red. View Answer. Which of the following are present in teichoic acids? b) irregular 2011-2023 Sanfoundry. 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. Primary Screening of Microorganisms: Primary screening may be defined as detection and isolation of the desired microorganism based on its qualitative ability to produce the desired product like antibiotic or amino acid or an enzyme etc. Contact Us. Which of the following is NOT a criterion for the choice of an organism? a) The organism must be genetically stable True C. Phenolphthalein 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. He came with a lesion on the lower part of the left leg that according to him first appeared about a week before visiting the hospital. In this process the bacterium, which is a single cell, divides into two identical daughter cells. Answer: B 8. A) True Fecal coliform bacteria are a subgroup of total coliform bacteria. (1) Screen organic acid-producing microbes. a) Algae 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) Advanced treatment 15. First link in any food chain is usually green plants because. Which of the following bacteria is an endospore-forming bacteria that is also a common foodborne pathogen? 3. Multiple Choice. a) True Sugar fermentation test: Bacteria is grown in a sugar media. (retrieve https://www.learningsta.com, April 2021) 2.0 SCREENING . For which viral disease, vaccine has been recently developed through the use of tissue culture? 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. A BV test is done in a similar way as a pelvic exam or Pap smear. What is required for proper isolation of microorganisms? d) 2 micrometer in diameter There are various microorganisms types like bacteria, fungi, archaea, or protists. b) Potato Dextrose Agar plate 26. Clarification: The optimum temperature for the growth of an organism should be above 40C. d) Phaeophycophyta Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. View Answer, 11. c) Study of organisms that are not visible to naked eyes View Answer, 10. b) hexokinase Potato Dextrose Agar plate b) Clostridium botulinum (3) Attempt to synthesized secondary metabolites outside of their natural environment. Which among the following group of microorganisms are found in the ducts of cows mammary glands? Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. 1g of soil is added to that test tube and the soil is allowed to settle down. What is high throughput screening used for? the virus must be able to cross-link red blood cells directly. Which organisms show the zone of inhibition grown on a Petri plate? B) are by-products of metabolism that are not important to microbe function. B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. 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. B. Who was the first to observe animalcules under the microscope? a) electron beams and magnetic fields d) spherical The colour of plate changes from red to yellow in the zone of organisms producing organic acid. b) Auxanographic technique D) A and C . D. Hanging Drop technique. B) False, Pasteurization is used to sterilize milk. d) Physical assay Easy detection of the small percentage of useful microorganism. 10. Who is considered the father of Western medicine? d) mitochondrial membrane A) production of alcoholic beverages by microorganisms. Clarification: The Antibiotic producers show the zone of inhibition. Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. C lostridium perfringens is an obligate anaerobic bacteria that do not require oxygen to grow and thus it is not Microaerophilic, microaerophilic bacteria require low amounts of oxygen for growth. Which of the following types of microorganisms is photosynthetic? 4. Engineering 2023 , FAQs Interview Questions. Which of the following foods is NOT made by fermentation? b) True For this dilution, it may be said that the solution was diluted _______ In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms? b) Biological assay View Answer, 14. the virus must not be able to lyse red blood cells. a) anaerobic cells b) Acanthopeltis a) Thiobacillus thiooxidans 4. Symptoms include cough and lung infection. Which of the following are true for cytoplasmic membrane? 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. Which of the following is a family of lambda phage viruses? Biology Multiple Choice Questions on Microbes. (2) It determines which microorganisms can produce a compound. B. Auxanographic technique Which among the following are microaerophilic bacteria? c) hydrophobic barrier b) Nitrosococcus oceanus You can also download the PDF of Microbiology MCQs by applying below. C) selecting microbial strains that lack a feedback system. It is colourless at pH 8.0 and becomes red at pH above 10.0. The "flash method" or "high temperature short time" method exposes fluids to Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. Here are 1000 MCQs on Microbiology (Chapterwise). In the following diagram, what does the question mark represent?a) Ciliab) Flagellac) Haird) PseudopodiaAnswer: b d) Malaria The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. c) fecal streptococci Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a (3) It does not provide many ideas about the production or yield potential of microorganisms. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. Identification of bacteria by biochemical tests. Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. D. Indicator dye technique. 7. Q. Q.1: Screening of microorganisms includes . b) Microbacteria Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? View Answer, 26. c) Spirochaeta Which of the following plate is used to detect and isolate organic acid producers? Each daughter cell is a clone of the parent cell. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . Chapter 3: Classification of Viruses MCQs. d) gene D. Phenol red. (1) Its a process for the detection and isolation of microorganisms of our interest. (Or show it to your microbiology professor, just for fun.) b. not washing hands before and after lab . It is done by using paper, thin layer or other chromatographic techniques. magic island poem tone Consult Now Clarification: Phenol Red plate is used to detect and isolate organic acid producers. d) Bacillus polymyxa The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme c) Microviridae View Answer. Answer: B View Answer, 20. The organism must be able to produce a high yield of product Which of the following are the growth morphology of the protozoa? (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. B) plasmolyzes bacteria and fungi. C) use of microbes in sewage and pollution control. The section contains MCQs on size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall. the virus must be able to lyse red blood cells. Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. View Answer, 13. Which isolation technique is most commonly used for colony isolation in the laboratory? a) Mesophile Which is the secondary stage? Which of the following foods is NOT made by fermentation? d) Coxiella burnetii a) plasmid D) are harvested during the exponential phase of growth. As an Amazon Associate we earn from qualifying purchases. c) Lactobacilli Which of the following statements is correct regarding secondary screening________. Acridine orange is which type of mutagen? D) starch. B. Which of the following media is used for screening amylase? 8. Crowded plate technique A. c) 2.5 to 4 percent c) base analog Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of _____________ A) True Which of the following is a prokaryotic microorganism? View Answer, 5. Answer: B a) Regeneration However, if environmental contamination can enter the system, pathogens could get in too. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. Microbiology is the study of living organisms that are not visible to the naked eyes. How do you isolate microorganisms in the air? Ans: The steps adopted in a typical sewage treatment plant are as given below: ADVERTISEMENTS: a) Watson 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. a) elongated View Answer, 29. 5. It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. a) Micrococci Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. Sanfoundry Global Education & Learning Series Fermentation Technology. All Rights Reserved. A) are essential to microbe function. Crowded plate technique a) Crowded plate technique C. Enrichment Culture technique Full-form of ATCC is _________. d) Lactobacillus acidophilus View Answer, 16. Fermentation Products & Bioreactor Design, Fermentation Laboratory & Bioprocesses Design, SCADA System for Bioreactors, Beer & Brewing, Fermenting Vegetables & Sour Tonic Beverages, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Fermentation Technology Questions and Answers Microbial Growth Kinetics FedBatch Culture, Next - Fermentation Technology Questions and Answers Preservation of Industrial Microorganisms, Certificate of Merit in Fermentation Technology, Fermentation Technology Certification Contest, Genetic Engineering Questions and Answers Database Screening and Screening by Nucleic Acid Hybridisation 1, Fermentation Technology Questions and Answers Improvement of Industrial Microorganisms, Fermentation Technology Questions and Answers Fermentation Products Recovery and Purification Chromatography, Genetic Engineering Questions and Answers Database Screening and Screening by Nucleic Acid Hybridisation 2, Mechanical Operations Questions and Answers Screening Equipments, Fermentation Technology Questions and Answers Microbial Growth Kinetics FedBatch Culture, Fermentation Technology Questions and Answers Aeration and Agitation Determination of Kla Values, Fermentation Technology Questions and Answers Microbial Growth Kinetics Continuous Culture, Fermentation Technology Questions and Answers Commercial Applications Surface, Submerged and Solid State Fermentation, Books on Engineering, Science and Technology, Chemical Process Technology MCQ Questions. a) Bacillariophycophyta a) Styloviridae Question 6. A. 5. b) Ferdinand Cohn Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. 3. Answer: A Which of the following method is not used in isolation and screening of desired microorganisms? a) peptidoglycan C) new batches of microorganisms are screened for increased yield. C) are products that require additional processing before they can be packaged. The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. d) 2-fold Answer: A a) Neisseria gonorrhoeae. a) Gram-negative organisms It includes the physical processes of screening, comminution, grit removal, and sedimentation. b) Streptomyces olivaceus You will get a gown or sheet as a cover. 11. 5. Which of the following are produced by microorganisms? Clarification: Adenoviruses cause respiratory infections. b) light waves Air Sampling. a) Nitrospina gracilis They block floating debris such as wood, rags, and other bulky objects that could clog pipes or pumps. d) Measles a) phospholipids A) radiation. Now that you have read Lesson 5 and have completed the exercises, you should be ready to take the self-assessment quiz. C) sugar. c) Desulfotomaculum sp. The principal microorganism for yogurt is ______________________ d) Gram-positive bacteria _______ are the agents that act as carriers of a pathogen and spread diseases. Which of the following is the example of encapsulated gram-positive bacteria? [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). c) Bacillus thuringiensis a) The organism must be genetically stable. b) Monotrichous The greatest resolution in light microscopy can be obtained with ___________ c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. Candidiasis is a fungal infection, skin infection, and mouth or vaginal infection that can occur due to the overgrowth of the fungus. C. 5 8 c) Breads c) Cyanobacteria Full-form of ATCC is _________ 13. The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. Rickettsia species are carried by. 7. Sulphur can be utilized by bacteria in the a. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. 11 junio, 2022. c) Chemical assay Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. What is the fecal test that requires a 3-day specimen? Microbial enzyme production concentrates on simple hydrolytic enzymes (proteases, amylases, pectinases) that degrade natural polymers such as proteins, starches, or pectin. 9. b) gamma rays d) Multiple fission d) Pasteur b) Auxanographic technique d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture a) Chemical and biological assay Some strains, however, can cause illness. Which among the following are Spirochetes? 2. c) Enrichment Culture technique A routine GTT: is three hours long. Phosphorus is essential component of __________ Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. c) The optimum temperature for the growth of an organism must be above 50C These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. It is further followed by secondary screening, to check the capabilities and gain information about these organisms. Aims and objectives. View Answer, 2. Who is known as the father of Microbiology? Which of the following enzyme removes the RNA primer with its 5-nuclease activity? Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? It changes from yellow at pH 3.0 to blue-violet at pH 4.6. c) Chlorophycophyta 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 shows the zone of inhibition when a particular organism is grown on a Petri plate? c) Phenolphthalein View Answer, 11. C. Enrichment Culture technique True. Which of the following plate is used to detect and isolate organic acid producers? View Answer, 45. A. The section contains MCQs on microorganisms, industry, industrial uses of bacteria, molds and yeasts, genotypic changes, bacterial recombination and conjugation, bacterial transduction and transformation. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. 10. c) Enrichment Culture technique screening of microorganisms includes mcqwarning signs for a deteriorating patient with covid 19 infection 2022.07.03 18:36 18:36 Which of the following method is not used in isolation and screening of desired microorganisms? The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo 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. d) American Type Classifier and Collection (3) It provides information on whether the product formed by microorganisms is new or not. 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.