b) cellulose D) starch. View Answer, 44. 8. View Answer. C. Enrichment Culture technique c) Chlorella You can also download the PDF of Microbiology MCQs by applying below. Chemical preservatives do NOT include It changes from yellow at pH 3.0 to blue-violet at pH 4.6. c) Chemical assay 6. A) manipulating the growth environment. Antibiotic producing microorganisms can be detected by the method__________, 5. MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . Our Environment Class 10 MCQ Question 6. A. Microbiology is the study of living organisms that are not visible to the naked eyes. Avoid contaminated food and water. d) Bacillus polymyxa c) Psychrophile Complex media are prepared using digests of microbial, animal, or . a) Bacillariophycophyta Which of the following is a prokaryotic microorganism? a) Eremothecium ashbyi d) Cristispira Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? b) The examination of the infection sites, c) They are prokaryotes in cellular organization. 6. [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) sugar. Clarification: The pH range of Bromophenol blue is 3.0 4.6. Which of the following is a family of lambda phage viruses? a) False How to avoid the spreading of Microorganisms has been discussed. 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 modern plants the screens are cleaned . Secondary screening may be qualitative and quantitative in its approach. 14. Who was the first to observe animalcules under the microscope? a) cytoplasmic membrane Which was the first disease for which a chemotherapeutic agent was used? 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. It should not leave damage and odour. The section contains MCQs on phages structure and morphology, bacterial viruses replication, lysogeny and lytic. Which isolation technique is most commonly used for colony isolation in the laboratory? 1. 5. 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. 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 . 3. Our mission is to improve educational access and learning for everyone. d) hydrophobic barrier and site of generation of protonmotive force 3. C) alcohol. d) All of the mentioned View Answer, 2. Who is known as the father of Microbiology? membranes of microorganisms. Home Class 12 Biology Objective Questions 250+ TOP MCQs on Microbes and Answers. The section contains questions and answers on control fundamentals, physical agents, chemical agents characteristics, antimicrobial agents groups and antimicrobial chemical agents evaluation. b) Clostridium botulinum B. Which shape of bacteria has been represented in the following diagram?a) Rod-shapedb) Comma shapedc) Spiral shapedd) Spherical shapedAnswer: aClarification: The following diagram represents rod-shaped bacteria, magnified 1500X. Place the gram of soil into the first tube with saline and SHAKE WELL. 3. a) Gram-negative organisms c) Organic acid producers b) Thymol blue Auxanography technique is employed for detecting microorganisms able to produce__________. The section contains MCQs on microorganisms, industry, industrial uses of bacteria, molds and yeasts, genotypic changes, bacterial recombination and conjugation, bacterial transduction and transformation. What is the fecal test that requires a 3-day specimen? 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 19-year-old male living in a tropical region of India visited the hospital. Rickettsia species are carried by. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. Which microorganism(s) among the following perform photosynthesis by utilizing light? A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. All Rights Reserved. A BV test is done in a similar way as a pelvic exam or Pap smear. The microorganisms are chosen based on the rest three criteria. Secondary screening may be qualitative and quantitative in its approach. C. Enrichment Culture technique Sanfoundry Global Education & Learning Series Fermentation Technology. C. Organic acid producers d) Indicator dye technique Crowded plate technique Trophic level in an ecosystem represents. A) True 4. The process is repeated several times until the requirement is met. c) DNA polymerase I View Answer, 25. 2. c) Enrichment Culture technique d) Indicator dye technique C. Phenolphthalein The section contains MCQs on diseases caused by fungi and protozoa, therapeutic drugs for fungal treatment and protozoan diseases. View Answer, 26. d) intercalating agents Answer: D Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? a) Neisseria gonorrhoeae. Antibiotic producers citation tool such as, Authors: Nina Parker, Mark Schneegurt, Anh-Hue Thi Tu, Philip Lister, Brian M. Forster. 13. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. d) bacterial infection View Answer, 28. B) False, HACCP Hazard Analysis and Critical Control Point uses random samples for quality control of the food supply. a) Styloviridae The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. Give the steps of typical sewage treatment plant are as given below. Juli 2022 View Answer, 13. The well-isolated colonies are antibiotic producers with the zone of inhibition. Air Sampling. b) Biological assay 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 check this one and can share your opinions on Cell Culture Plates Product. c) Robert Koch d. using damaged equipment and glassware. d) chitin, cellulose, or hemicellulose Report an issue. D) exposure. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. A. Fecal occult blood B. Answer: D The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. A. 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, Types of pathogens include specific bacteria strains, viruses, fungi, or parasites that can cause illness in its host. You will lie on your back on an exam table, with your feet in stirrups. A) True Has three to five flagella at the posterior end B. Performance and sterility testing of media lots should also be determined and 4. d) Rose Bengal Agar plate 13. 45) What are the types of general characteristics that are important for the identification and classification of protozoa? C) 72 oC for 15 seconds. Wish you the best in your endeavor to learn and master Microbiology! B. A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . C) use of microbes in sewage and pollution control. a) Final treatment b) transposons 5. Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. Which of the following is NOT a criterion for the choice of an organism? 1. A. View Answer, 39. c) AIDS ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. View Answer, 8. a) DNA polymerase III 9. It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. Which of the following is used in electron microscope? It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. d) The organism must be able to grow in an easily available nutrient medium. 4. It is 50,000X magnified image of a bacterium. includes 6 urine samples. c) Spirillum volutans b) ribitol residues Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. Clarification: Phenol Red plate is used to detect and isolate organic acid producers. Phagocytosis is a critical part of the immune system. b) Auxanographic technique The reason they are called microorganisms is that you can only see them when you use a microscope. c) Nitrosomonas europaea b) aerobic cells Clarification: The Auxanographic technique is used for the detection and isolation of the organisms which are growth factor producers. 43) Which of the following methods are the most common and routine culture methods performed in the microbiology lab for the proper isolation and identification of bacteria and fungi? A) True View Answer, 14. Which of the following media is used for screening amylase? MCQ.9):Which bacteria have flagella of amphitrichous type means the flagellum are present at both the sides? Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? a) Study of molecules that are visible to human eyes 6. c) Bacillus thuringiensis It includes the physical processes of screening, comminution, grit removal, and sedimentation. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. a) Algae 4. chp 25 microbiology 211 mcq. b) Auxanographic technique 5. Full-form of ATCC is _________. Methyl red What is the name of the procedure performed under sterile conditions to eliminate d) Study of microscope 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. a) Streptomyces sp. b) Magnifying lens d) electron beams It is done by using paper, thin layer or other chromatographic techniques. B. Auxanographic technique This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. D) 134 oC for 1 second. 2. B. During their metabolism, microbes produce chemicals, some of which are used by human beings. a) The organism must be genetically stable Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? A. Clarification: Hanging drop technique is used for motility testing of bacteria. 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. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. Place 6 test tubes into a rack and fill each with 9ml of 0.9% NaCl solution. c. confining long hair and loose clothing . d) an increase in the mass of an individual organism Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? It is a non-profit organization and a key resource for medical research. Growth of bacteria or microorganisms refer to __________________ 37) Which of the following is the selective media used for the cultivation and isolation of. b) Jenner As an Amazon Associate we earn from qualifying purchases. Answer: A It will immensely help anyone trying to crack an exam or an interview. A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. Which of the following is the standard resource for identifying bacteria? B) 62.3oC for 30 minutes. 8. a) Amphitrichous D. The organism must be able to grow in an easily available nutrient medium. All of the above. B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. Defined media and complex media are two broad classes of culture media used in microbiology. Which of the following method can be used to determine the number of bacteria quantitatively? (2) Attempt to kill microorganisms outside of their natural environment. D) all of the above. D. Indicator dye technique. The Gram staining is one of the most crucial staining techniques in microbiology. Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi . c) Breads All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. Which of the following method is not used in isolation and screening of desired microorganisms? 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. Staphylococcus aureus is a major bacterial human pathogen that causes a wide variety of clinical manifestations. It is further followed by secondary screening, to check the capabilities and gain information about these organisms. Screens are made of long, closely spaced, narrow metal bars. b) Budding View Answer, 29. View Answer, 17. 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. b) The organism must be able to produce a high yield of product Growth Factor producers b) False d) Gram-positive bacteria a) cellulose dehydrogenase 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. 4. b) hexokinase c) Mycobacterium tuberculosis milk, meat, green vegetables, fruits, etc.) 2. 10. c) magnetic fields Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes Note when energy and additional compounds are necessary for any of these mechanisms to operate. a) site of generation of protonmotive force A. (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. 6.8 - 7.2 b. View Answer, 5. D. Rose Bengal Agar plate. c) hydrophobic barrier a) True A) True a) Regeneration Which of the following are important primary screening techniques? a) True b) plaque c) prophage View Answer, 30. MCQ on Industrial Microbiology. 12. True A) radiation. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. c) Chlorophycophyta 25. a)Microaerophilic. C. MacConkeys Agar plate Engineering 2023 , FAQs Interview Questions, on 250+ MCQs on Isolation and Screening of Industrially Important Microbes and Answers, Fermentation Technology Objective Questions, 300+ TOP MCQs on Database Screening and Screening by Nucleic Acid Hybridisation 1 and Answers, 300+ TOP MCQs on Database Screening and Screening by Nucleic Acid Hybridisation 2 and Answers, 250+ MCQs on Media for Industrial Fermentations Minerals, Growth Factors and Buffers and Answers, 250+ MCQs on Improvement of Industrial Microorganisms and Answers, 250+ TOP MCQs on Vibration Isolation and Transmissibility and Answers, 250+ TOP MCQs on Multiversion Schemes, Snapshot Isolation, 250+ TOP MCQs on Microbes in Industrial Products-3 and Answers, 250+ TOP MCQs on Microbes in Metal Containing Habitat and Answers, [12 Class Notes] MICROBES IN HUMAN WELFARE Biology CBSE, 250+ TOP MCQs on Microbes as Biofertilizers and Answers, 250+ TOP MCQs on Transaction Isolation Levels and Answers, 250+ TOP MCQs on Enzyme Extraction and Isolation Choice of Enzyme Sources and Answers, 250+ MCQs on Microbial Growth Kinetics Batch Culture and Answers, 200+ TOP CELL CULTURES and CHARACTERISTICS Interview Questions and Answers, 200+ TOP Microbiology Of Foods Interview Questions with Answers, 250+ TOP MCQs on Microbes in Industrial Products-2 and Answers, 250+ MCQs on Brewing Yeast Differentiation (Traditional Methods) and Answers, 250+ TOP MCQs on Microbes in Household Products-2 and Answers, 300+ TOP Cell Cultures & Characteristics Objective Questions and Answers, 300+ TOP Microbiology of Foods Objective Questions & Answers. 2. a) Cephaleuros Which of the following morphological characteristics is an important identification characteristic of. A) are among the most widely used preservatives. A) substrates are added to the system all at once and runs until product is harvested. B) plasmolyzes bacteria and fungi. (1) Its a process for the detection and isolation of microorganisms of our interest. b) hydrophilic barrier (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. b) True View Answer, 37. First link in any food chain is usually green plants because. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. Therefore, the exact composition of a defined medium is known. Answer: B d) 2-fold The production of substances in industrial microbiology occur in the sequence: False. A. b) Corticoviridae 10. Answer: A A. Phenol red plate the virus must be able to lyse red blood cells. Which among the following are microaerophilic bacteria? c) Pour-plate and spread plate View Answer, 46. Which of the following dye is colourless at acidic pH and becomes red at basic pH? A) organic acids. In this process the bacterium, which is a single cell, divides into two identical daughter cells. Easy detection of the small percentage of useful microorganism. Sulphates are reduced to hydrogen sulphide by _____________________ Allow discarding of many valueless microbes. 1. Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? Clarification: Phenolphthalein has a pH range between 8.0 10.0. d) cellulase The organism must be genetically stable d) mitochondrial membrane a) Treponema b) Ferdinand Cohn c) Microviridae c) fecal streptococci b. Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. 6. c) carbohydrates Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. The methods for isolation and screening are a crowded plate, auxanography, enrichment culture and use of indicator dyes. Aims and objectives. Which is the secondary stage? View Answer, 50. Answer: C a) Lactobacillus Want to cite, share, or modify this book? Answer: B Which of the following method is not used in isolation and screening of desired microorganisms? 30 seconds. (4) Attempt to Stain microorganisms. What is required for proper isolation of microorganisms? D. Indicator dye technique. 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. View Answer, 8. 2011-2023 Sanfoundry. 3. Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. 5. Name three reserve materials synthesized by microorganisms and note which microbial groups b) Auxanographic technique What is Microbiology? View Answer, 2. 6. C. The optimum temperature for the growth of an organism must be above 50C View Answer, 47. View Answer, 12. C. American Type Counter Collection Which of the following types of mutants can be isolated using the replica plate technique? D) A and C . a) Nitrospina gracilis d) Lactobacillus acidophilus 2011-2023 Sanfoundry. Which among the following group of microorganisms are found in the ducts of cows mammary glands? chipotle corporate phone number .