2011-2023 Sanfoundry. d) Mycoplasmas A. 5. D) all of the above. 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) Psychrophile Which of the following is NOT a criterion for the choice of an organism? Full-form of ATCC is _________. [2] The term for organisms that retain the . B) inoculation, downstream processing, fermentation, removal of waste. a) Growth Factor producers 2. Mycoplasma pneumoniae is an unusual bacteria which has distinctive characteristics, such as. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. C) new batches of microorganisms are screened for increased yield. The section contains MCQs on selective methods, pure cultures and cultural characteristics. 10. Gram negative bacteria take the color of safranin stain and appear pink or red. b) Streptomyces olivaceus then you must include on every digital page view the following attribution: Use the information below to generate a citation. Which of the following plate is used to detect and isolate organic acid producers? c) Objective lens Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? _______ are the agents that act as carriers of a pathogen and spread diseases. b) cellulose D) all of the above. A) True a) The organism must be genetically stable 2. What does a viral DNA becomes after being associated with the bacterial chromosome? Which of the following method can be used to determine the number of bacteria quantitatively? d) Primary treatment c) Study of organisms that are not visible to naked eyes Rhizobium bacteria. Butanol is obtained by fermenting molasses by. C) selecting microbial strains that lack a feedback system. 5. Clarification: The Auxanographic technique is used for the detection and isolation of the organisms which are growth factor producers. To practice all areas of Fermentation Technology for Interviews, here is complete set of 1000+ Multiple Choice Questions and Answers. C. Enrichment Culture technique 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? In modern plants the screens are cleaned . View Answer, 43. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. APT test C. Elastase I D. Quantitative fecal fat testing: 6. B. 6. Has three to five flagella at the posterior end B. Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. Which of the following are produced by microorganisms? a) Study of molecules that are visible to human eyes The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. b) Ferdinand Cohn OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. B) inhibit germination of botulism spores. A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. d) Indicator dye technique Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. What is the name of the procedure performed under sterile conditions to eliminate Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. Which of the following inhibits DNA replication? A. a) Micrococci Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. The process is repeated several times until the requirement is met. Which of the following is a correct usage of binomial nomenclature? a) Eremothecium ashbyi d) 5 percent A) True c) Chlorella It is the organization which has the largest department of Research and Development. d) chitin, cellulose, or hemicellulose True. (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. 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. d) Indicator dye technique Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. d) Indicator dye technique 1. 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. Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. B) mass, controlled culture of microbes to synthesize products. b) Gram-positive organisms b) Thymol blue c) DNA polymerase I 3. Who was the first to observe "animalcules" under the microscope? Which of the following foods is NOT made by fermentation? c) parasitic infection b) Borrelia The section contains multiple choice questions and answers on soil microorganisms interactions, nitrogen, carbon and sulphur cycles, aquatic environment, aquatic microorganisms techniques and productivity. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. chp 25 microbiology 211 mcq. 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. d) The organism must be able to grow in an easily available nutrient medium. The Microbiology Society has a vision and mission around which we base our strategy. D. Indicator dye technique. The microorganisms secrete the enzymes into their nutrient medium to make better use of it. Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? d) Fungi View Answer. Which of the following is a family of lambda phage viruses? Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. A food chain comprising birds, green plants, fish and man. View Answer, 2. Who is known as the father of Microbiology? D. Amino acid producers. B. 5. Microbiology MCQ. 5. Creative Commons Attribution License d) proteins Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . a) peptidoglycan are not subject to the Creative Commons license and may not be reproduced without the prior and express written Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. c) 2mm in diameter 6. a) elongated 1. A) are essential to microbe function. View Answer, 18. d) Lactobacillus acidophilus [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). This set of Fermentation Technology Interview Questions and Answers focuses on Isolation and Screening of Industrially Important Microbes. The bacterium Staphylococcus aureus is which type of bacteria? b) Killing pathogenic microorganisms c) Killing spores d) None of these answer-A 3. B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. Which of the following method proceeds with 2-plate preparation? 5. These are non-enveloped viruses with a double-stranded DNA genome. 11. D. Indicator dye technique. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. Which of the following microorganism is eliminated in canned foods? d) 2 micrometer in diameter The respiratory chain of bacteria is associated with the _____________ They block floating debris such as wood, rags, and other bulky objects that could clog pipes or pumps. It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. View Answer, 9. Clarification: Phenolphthalein has a pH range between 8.0 10.0. Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . View Answer, 41. View Answer, 7. (1) It is useful in sorting microorganisms that have real commercial value. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? Answer: B Chrysolaminarin is the reserved food of ___________________ b) Advanced treatment 12. It is a non-profit organization and a key resource for medical research. a) cellulose dehydrogenase 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. Multiple Choice. It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. For e.g., cellulose producers grow on nutrient medium supplied with cellulose. The section contains MCQs on size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall. b) coliforms View Answer, 35. Which of the following dye is colourless at acidic pH and becomes red at basic pH? 1. 9. b) Antibiotic producers c) neither aerobic and anaerobic cells 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. 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. 3. a) Streptomyces sp. d) Antoni van Leeuwenhoek c) Binary fission 5. 5. screening of microorganisms includes mcqwarning signs for a deteriorating patient with covid 19 infection 2022.07.03 18:36 18:36 b) The organism must be able to produce a high yield of product. View Answer, 29. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. Your email address will not be published. uses 100 grams of glucose in a 300ml solution. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. [2][3] S. aureus is found in the . Wash your hands with soap and water for at least 20 seconds. Defined media and complex media are two broad classes of culture media used in microbiology. a) False D) 134 oC for 1 second. Thank you so much for sharing. Which among the following is not an ammonia-oxidizing bacteria? B. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. C. Enrichment Culture technique B) False, The aim of industrial microbiology is to produce chemicals that can be purified and packaged for sale or used in other commercial processes. The organic acid producers produce acid which changes the colour of media and is thus detected easily. a) glycerol residues Which one of the following organisms is least likely to cause this illness? B) False, Mass-produced microbial cells can be used as livestock feed. 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) Crowded plate technique A. 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? 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. The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. A) True 8. A) are among the most widely used preservatives. d) Phaeophycophyta Blood C. Electrolytes D. Water: 5. Chapter 3: Classification of Viruses MCQs. View Answer, 10. View Answer. Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. Place 6 test tubes into a rack and fill each with 9ml of 0.9% NaCl solution. Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. b) Budding Glycosylated hemoglobin: causes sickle cell anemia. Answer: D screening of microorganisms includes mcq; screening of microorganisms includes mcq. Engineering 2023 , FAQs Interview Questions. Which of the following method is useful for the isolation and detection of organisms having the ability to produce growth factors? 12. 6. Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. c) Pour-plate and spread plate B) 62.3oC for 30 minutes. c) fecal streptococci c) Cyanobacteria Which microorganism(s) among the following perform photosynthesis by utilizing light? Lipopolysaccharide in cell walls is characteristic of? 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. You can also prevent infections through: Hand-washing. a) viruses Answer: A Good work practices include, a. smelling and tasting chemicals . d) Study of microscope b) Mesophile and psychrophile The principal microorganism for yogurt is ______________________ View Answer, 10. B) nutrients are continuously fed into the reactor and the product is siphoned off during the run. Clarification: The pH range of Bromophenol blue is 3.0 4.6. Answer: B A. c) carbohydrates ticks and fleas. The act of phagocytizing pathogenic or foreign particles allows cells of the immune system to know what they are fighting against. d) Pedoviridae d) hydrophobic barrier and site of generation of protonmotive force 4.1: Prokaryote Habitats, Relationships, and Microbiomes. Secondary screening may be qualitative and quantitative in its approach. This quiz is designed to help you assess how well you have learned the content of this lesson. Which of the following is not a subfield of microbiology? b) Xanthophycophyta d) Prototheca Microorganism Definition. What is the pH range of Bromophenol blue? a) changes in the total population a) Watson The section contains MCQs on spirochetes, negative rods, cocci, facultatively anaerobic gram, rickettsias and chlamydias, mycoplasmas, positive cocci and positive bacteria. Sanfoundry Global Education & Learning Series Fermentation Technology. d) cellulase Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. Required fields are marked *. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. In this process the bacterium, which is a single cell, divides into two identical daughter cells. Chapter 2: Classification of Medically important Bacteria MCQs. d) Multiple fission b) Syphilis d) Hanging Drop technique View Answer, 30. Answer: A Place the gram of soil into the first tube with saline and SHAKE WELL. Secondary metabolites View Answer, 7. Types of pathogens include specific bacteria strains, viruses, fungi, or parasites that can cause illness in its host. D. Phenol red. Chemical preservatives do NOT include In batch fermentation, 15. b) teichoic acid c) American Type Counter Collection a) Crowded plate technique A BV test is done in a similar way as a pelvic exam or Pap smear. Crowded plate technique 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. 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. b) light waves Our members have a unique depth and breadth of knowledge about the discipline. B. c) Chlorophycophyta A. Clarification: The Antibiotic producers show the zone of inhibition. Microbes can live in highly acidic as well as an alkaline medium. These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. Which of the following foods is NOT made by fermentation? c) Organic acid producers (2) Attempt to kill microorganisms outside of their natural environment. Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. 9. c) Phenolphthalein Vaccination was invented by ____________ 3. 3. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. 7. Growth Factor producers MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. a) American Type Culture Collection The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. 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. a) plasmid a) Leuconostoc mesenteroides How to avoid the spreading of Microorganisms has been discussed. b) RNA polymerase 2. A) production of alcoholic beverages by microorganisms. 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. A) substrates are added to the system all at once and runs until product is harvested. Which of the following is a prokaryotic microorganism? a) Methyl red Definition: true bacteria; bacteria excluding the archaea. 1. 2. Which of the following plate is used to detect and isolate organic acid producers? Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. c) Lactobacilli Biology Multiple Choice Questions on Microbes. Prokaryotes can be found everywhere on our planet, even in the most extreme environments. (4) This may be accomplished by paper, thin layer, chromatographic technique. b) Auxanographic technique It belongs to the phthalein family that is employed as an acid-base indicator. We recommend using a 11. View Answer, 37. View Answer, 5. For which viral disease, vaccine has been recently developed through the use of tissue culture? Wish you the best in your endeavor to learn and master Microbiology! c) Microviridae a) 3.0 4.6 1. c) rod shaped View Answer, 46. a) Vibrio cholerae 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. A) True It is 50,000X magnified image of a bacterium. a) Bacillariophycophyta Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. d) Thermophile Answer: A The cell structure of gram positive and gram negative bacteria appear as the picture given below after the gram staining procedure, Gram positive bacteria Gram negative bacteria. The process is repeated several times until the requirement is met. milk, meat, green vegetables, fruits, etc.) These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. Enrichment culture technique was developed by_________, 16. c) Secondary treatment The section contains questions and answers on diseases caused by staphylococcus, streptococcus, corynebacterium, aerobic and anaerobic gram, viruses containing single and double stranded dna. 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 . Which shape of bacteria has been represented in the following diagram? d) All of the mentioned View Answer, 48. Categories: . d) Coliform bacteria. Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. You may refer to the lesson text whenever you are unsure of the answer. Answer: B Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. Nitrates maintain the red color of preserved meats and It should have a fast rate of kill of micro-organisms. A. C. 1000-fold You can also check this one and can share your opinions on Cell Culture Plates Product. 1. Often overlooked, hand-washing is one of the easiest and most effective ways to protect yourself from germs and most infections. a) Treponema b) Auxanographic technique Which of the following bacteria is an endospore-forming bacteria that is also a common foodborne pathogen? C. Enrichment Culture technique A) True Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? 15. answer choices. b) Streak-plate a) Neisseria gonorrhoeae. 10-fold Secondary screening can give information about, (1) The genetic instability in microbial cultures, (2) Number of products produced in a single fermentation, 8. About Oracle NetSuite. Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? C. American Type Counter Collection C) sugar. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. A) fermentation, downstream processing, removal of waste, inoculation. B. All Rights Reserved. c) beta-glucosidase It should not leave damage and odour. These microorganisms have been often under-appreciated and under-studied. The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. It should be active and stable and environmentally safe. a) Small pox Primary treatment removes material that will either float or readily settle out by gravity. View Answer. 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. Besides macroscopic plants and animals, microbes are the major components of biological systems on this earth. b) Treponema pallidum b) transposons D. Indicator dye technique. 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. b) irregular a) Alcoholic beverages B) heat. b) ribitol residues Question 6. B) False, Microbiology 17 immunization and immune Testi. b) Acanthopeltis Answer: C 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. View Answer, 42. View Answer, 11. Your health care provider will insert a special tool called a speculum into your vagina. 8. 3. 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. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . Answer: A c) Gram-negative bacteria Microbiology is the study of : 3. b) The organism must be able to produce a high yield of product What is Microbiology? Water treatment typically requires three stages to make it potable from sewage. c) 1000-fold The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. View Answer, 27. Pathogen testing is used to identify pathogenic organisms in manufacturing environments, ingredients or finished products that could harm the consumer. View Answer, 14. It changes from yellow at pH 3.0 to blue-violet at pH 4.6. b) False How do you isolate microorganisms in the air? It will immensely help anyone trying to crack an exam or an interview. Viral hemagglutination assays only work with certain types of viruses because. Avoid contaminated food and water. View Answer, 28. Name three reserve materials synthesized by microorganisms and note which microbial groups a) Thiobacillus thiooxidans 100-fold As an Amazon Associate we earn from qualifying purchases.
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