b) Magnifying lens a) Leuconostoc mesenteroides (1) Its a process for the detection and isolation of microorganisms of our interest. It doesn't include viruses and prions because they are classified as non-living. d) Pedoviridae d) chitin, cellulose, or hemicellulose a) False 1. A. Fecal occult blood B. c) Gram-negative bacteria Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. b) coliforms B. Auxanographic technique 1. True. b) Microbacteria A) retards growth of Staphylococcus aureus. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. d) Measles B. C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. C. 5 8 Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. 3. d) both aerobic and anaerobic cells View Answer, 14. Microbes are certainly ideal for biotechnology. Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. View Answer, 38. A) True Answer: B Which of the following method is not used in isolation and screening of desired microorganisms? The greatest resolution in light microscopy can be obtained with ___________ Yeast cells are good source of. A. d) Prototheca A 7 year old girl developed a sore throat and fever for 2 days. 4. c) Organic acid producers Viral hemagglutination assays only work with certain types of viruses because. d. using damaged equipment and glassware. 12. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. d) Indicator dye technique d) Hanging Drop technique a) Algae View Answer, 34. d) bacterial infection What is the fecal test that requires a 3-day specimen? Sanfoundry Global Education & Learning Series Fermentation Technology. Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. 6. View Answer, 27. Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. The presence of E. coli in a drinking water sample almost always indicates recent fecal contamination, meaning there is a greater . 5. Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single circular chromosome. View Answer, 21. d) Indicator dye technique Which of the following pulmonary pathogens cannot be easily detected by the gram staining technique when performing a microscopy test? c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. 2. It will immensely help anyone trying to crack an exam or an interview. Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. _______ are the agents that act as carriers of a pathogen and spread diseases. It must be toxic to micro-organisms at concentrations well below the toxic thresholds of humans and higher animals so that it cannot negatively affect the animals or humans. Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi . 2. 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? View Answer, 11. Answer: C Screens are made of long, closely spaced, narrow metal bars. Salting, as a preservative, a) Regeneration 4. You will get a gown or sheet as a cover. 9. Everything you need to know about water and wastewater microbiology. Defined media are prepared by adding precise amounts of highly purified inorganic or organic chemicals to distilled water. c) Chlorophycophyta View Answer. a) changes in the total population b) light waves The microorganisms from lakes and rivers can grow at a salt concentration of _________ The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. [2][3] S. aureus is found in the . Place the gram of soil into the first tube with saline and SHAKE WELL. For this dilution, it may be said that the solution was diluted _______ A) True 5. Which of the following types of mutants can be isolated using the replica plate technique? a) peptidoglycan a) Cephaleuros Which of the following are the growth morphology of the protozoa? Complex media are prepared using digests of microbial, animal, or . Sugar fermentation test: Bacteria is grown in a sugar media. 1999-2023, Rice University. A 19-year-old male living in a tropical region of India visited the hospital. The science of using living systems to benefit humankind is called biotechnology.Technically speaking, the domestication of plants and animals through farming and breeding practices is a type of biotechnology. View Answer, 43. 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. View Answer, 17. c) Enrichment Culture technique 3. B) 62.3oC for 30 minutes. milk, meat, green vegetables, fruits, etc.) The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme 5. a) Mesophile 1g of soil is added to that test tube and the soil is allowed to settle down. As an Amazon Associate we earn from qualifying purchases. b) aerobic cells d) Fungi d) Corynebacterium diphtheriae a) S mallpox lauren conrad and stephen colletti /; 2. B) False, Pasteurization is used to sterilize milk. C) are products that require additional processing before they can be packaged. d) Study of microscope Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? Now that you have read Lesson 5 and have completed the exercises, you should be ready to take the self-assessment quiz. Clean and disinfect surfaces that are touched often. c) Psychrophile c) Spirochetes D) prevent mold. Dec 20, 2022 OpenStax. The Gram staining is one of the most crucial staining techniques in microbiology. The growth factor-like amino acids, vitamins promotes the growth of auxotrophic mutants. The section contains MCQs on chemotherapy historical highlights, antibiotics and their actions, microbiological assay of antibiotics, antifungal, antiviral and antitumour antibiotics. 10. MCQ.8): In which of the following bacterial condition, fimbriae helps the bacteria to stick to the mucous membrane of the host? d) All of the mentioned 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. 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. d) Amino acid producers 1. The act of phagocytizing pathogenic or foreign particles allows cells of the immune system to know what they are fighting against. Which of the following was NOT a kingdom in Linnaeuss taxonomy? The section contains MCQs on diseases caused by fungi and protozoa, therapeutic drugs for fungal treatment and protozoan diseases. Several types of cells of the immune system perform phagocytosis, such as neutrophils, macrophages, dendritic cells, and B lymphocytes. The following diagram represents ____________a) Plate with wormsb) Colonies of bacteria on a petri dishc) Onion root cells on a plated) Cheek cellsAnswer: bClarification: The following diagram represents colonies of bacteria on a petri dish. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . answer choices. B. Auxanographic technique Cellulose is degraded to cellobiose by the enzyme __________________ Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . Which of the following enzyme removes the RNA primer with its 5-nuclease activity? Lipopolysaccharide in cell walls is characteristic of? d) Cristispira b) teichoic acid Which of the following are present in teichoic acids? A. The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. Which of the following is NOT a criterion for the choice of an organism? The section contains multiple choice questions and answers on soil microorganisms interactions, nitrogen, carbon and sulphur cycles, aquatic environment, aquatic microorganisms techniques and productivity. Fecal coliform bacteria are a subgroup of total coliform bacteria. b) Study of animals and their family Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . 2. screening of microorganisms includes mcq. D) small-scale production is used to synthesize product. 4. b) Xanthophycophyta c) Objective lens Which of the following method is not used in isolation and screening of desired microorganisms? Which among the following is a pathogenic algae for humans? b) RNA polymerase Clarification: The Auxanographic technique is used for the detection and isolation of the organisms which are growth factor producers. A. b) 10-fold View Answer, 3. Plasmodium divides by which of the following method most commonly? Clarification: The Antibiotic producers show the zone of inhibition. Growth Factor producers There are various microorganisms types like bacteria, fungi, archaea, or protists. Our Environment Class 10 MCQ Question 6. Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. d) cathode rays C. The optimum temperature for the growth of an organism must be above 50C 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) using small scale containers to concentrate production. A) True This quiz is designed to help you assess how well you have learned the content of this lesson. b) Monotrichous Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. 10-fold 10. Answer: 4. Clarification: Phenolphthalein has a pH range between 8.0 10.0. 4.1: Prokaryote Habitats, Relationships, and Microbiomes. b. chipotle corporate phone number . Which of the following statements is correct regarding secondary screening________. c) hydrophobic barrier b) Killing pathogenic microorganisms c) Killing spores d) None of these answer-A 3. d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture c) 2.5 to 4 percent D. Phenol red. [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). Creative Commons Attribution License 6. C) 72 oC for 15 seconds. c) Mycobacterium tuberculosis What does a viral DNA becomes after being associated with the bacterial chromosome? c) 2mm in diameter Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. (2) It determines which microorganisms can produce a compound. chp 25 microbiology 211 mcq. 8. Note when energy and additional compounds are necessary for any of these mechanisms to operate. C) maintain a high osmotic pressure to kill microorganisms. A. The section contains multiple choice questions and answers on morphology, reproduction, physiology and fungi cultivation, fungi classification and special interest. 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? Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. The section contains MCQs on microorganisms, industry, industrial uses of bacteria, molds and yeasts, genotypic changes, bacterial recombination and conjugation, bacterial transduction and transformation. C) inoculation, fermentation, downstream processing, removal of waste. Which of the following bacteria is an endospore-forming bacteria that is also a common foodborne pathogen? View Answer, 30. 3. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. Microorganism Definition. Some strains, however, can cause illness. The screening is isolation and detection of microorganisms of interest. a) Cyanobacteria, Fungi and Viruses What is the pH range of Bromophenol blue? Which of the following is a prokaryotic microorganism? a) Treponema d) appendaged bacteria All Rights Reserved. Rickettsia species are carried by. 3. It is used to reduce the dense culture of cells to usable concentration. (Or show it to your microbiology professor, just for fun.) Which microorganism(s) among the following perform photosynthesis by utilizing light? c) nucleotides Full-form of ATCC is _________. a) Bacillariophycophyta A. b) vitamins The bacterial cell then elongates and splits into two daughter cells each with identical DNA to the parent cell. a) The organism must be genetically stable. View Answer, 42. a) anaerobic cells Answer: A b) Biological assay b) hexokinase B. b) False The section contains questions and answers on control fundamentals, physical agents, chemical agents characteristics, antimicrobial agents groups and antimicrobial chemical agents evaluation. D. 6.4 8.0. In this process desired microorganism is generally isolated from a natural environment like soil, which . b) 8.0 10.0 Types of pathogens include specific bacteria strains, viruses, fungi, or parasites that can cause illness in its host. A. Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. The reason they are called microorganisms is that you can only see them when you use a microscope. It is a non-profit organization and a key resource for medical research. 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? Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? 5. You may refer to the lesson text whenever you are unsure of the answer. Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. d) 5 percent A BV test is done in a similar way as a pelvic exam or Pap smear. The following diagram shows an adenovirus: ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<, Your email address will not be published. Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. d) gene Chapter 2: Classification of Medically important Bacteria MCQs. d) All of the mentioned A. These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. View Answer, 16. 1. c) Study of organisms that are not visible to naked eyes A) manipulating the growth environment. 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. This book uses the False. View Answer, 33. c) Phenolphthalein Q. Q.1: Screening of microorganisms includes . 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. 25. a)Microaerophilic. a) Phenol red plate Answer: D Primary methods to prevent food spoilage do NOT include 4. Answer: A b) Streak-plate The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. d) Nitrosovibrio tenuis The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. 8. Secondary screening may be qualitative and quantitative in its approach. A) are essential to microbe function. B) mass, controlled culture of microbes to synthesize products. a) Watson Incorporation of CaCO3 in medium is also used to__________. 37) Which of the following is the selective media used for the cultivation and isolation of. a. Streptococcus pyogens b. Microbiology MCQ. a) Lactobacillus b) Auxanographic technique 11. b) Gram-positive organisms C. MacConkeys Agar plate It is done by using paper, thin layer or other chromatographic techniques. A) production of alcoholic beverages by microorganisms. b) Longest wavelength of visible light used View Answer, 13. b) Candida utilis 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. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo C. Phenolphthalein 8. Chemical preservatives do NOT include Done in one or few steps. If you are redistributing all or part of this book in a print format, Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. You can also prevent infections through: Hand-washing. d) Rose Bengal Agar plate a) Neisseria gonorrhoeae. D. American Type Classifier and Collection. d) saprophytic b) mycotic infection d) hydrophobic barrier and site of generation of protonmotive force a) Nitrospina gracilis Biology Multiple Choice Questions on Microbes. Definition: true bacteria; bacteria excluding the archaea. a) Crowded plate technique a) x-rays Answer: 1. Answer: B d) Indicator dye technique Which of the following dye is colourless at acidic pH and becomes red at basic pH? Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? A) fermentation, downstream processing, removal of waste, inoculation. 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. The microorganisms are chosen based on the rest three criteria. Screening includes primary screening and secondary screening. Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? c) Spirochaeta Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. The Microbiology Society has a vision and mission around which we base our strategy. Clarification: The pH range of Bromophenol blue is 3.0 4.6. a) Small pox d) Coliforms It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. Our mission is to improve educational access and learning for everyone. Defined media and complex media are two broad classes of culture media used in microbiology. 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. (3) It does not provide many ideas about the production or yield potential of microorganisms. Allow discarding of many valueless microbes. a) elongated 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. Performance and sterility testing of media lots should also be determined and Penicillin causes inhibition of Mycoplasmas. d) Phenol red During their metabolism, microbes produce chemicals, some of which are used by human beings. 13. are licensed under a, Unique Characteristics of Prokaryotic Cells, Unique Characteristics of Eukaryotic Cells, Prokaryote Habitats, Relationships, and Microbiomes, Nonproteobacteria Gram-Negative Bacteria and Phototrophic Bacteria, Isolation, Culture, and Identification of Viruses, Using Biochemistry to Identify Microorganisms, Other Environmental Conditions that Affect Growth, Using Microbiology to Discover the Secrets of Life, Structure and Function of Cellular Genomes, How Asexual Prokaryotes Achieve Genetic Diversity, Modern Applications of Microbial Genetics, Microbes and the Tools of Genetic Engineering, Visualizing and Characterizing DNA, RNA, and Protein, Whole Genome Methods and Pharmaceutical Applications of Genetic Engineering, Using Physical Methods to Control Microorganisms, Using Chemicals to Control Microorganisms, Testing the Effectiveness of Antiseptics and Disinfectants, History of Chemotherapy and Antimicrobial Discovery, Fundamentals of Antimicrobial Chemotherapy, Testing the Effectiveness of Antimicrobials, Current Strategies for Antimicrobial Discovery, Virulence Factors of Bacterial and Viral Pathogens, Virulence Factors of Eukaryotic Pathogens, Major Histocompatibility Complexes and Antigen-Presenting Cells, Laboratory Analysis of the Immune Response, Polyclonal and Monoclonal Antibody Production, Anatomy and Normal Microbiota of the Skin and Eyes, Bacterial Infections of the Skin and Eyes, Protozoan and Helminthic Infections of the Skin and Eyes, Anatomy and Normal Microbiota of the Respiratory Tract, Bacterial Infections of the Respiratory Tract, Viral Infections of the Respiratory Tract, Anatomy and Normal Microbiota of the Urogenital Tract, Bacterial Infections of the Urinary System, Bacterial Infections of the Reproductive System, Viral Infections of the Reproductive System, Fungal Infections of the Reproductive System, Protozoan Infections of the Urogenital System, Anatomy and Normal Microbiota of the Digestive System, Microbial Diseases of the Mouth and Oral Cavity, Bacterial Infections of the Gastrointestinal Tract, Viral Infections of the Gastrointestinal Tract, Protozoan Infections of the Gastrointestinal Tract, Helminthic Infections of the Gastrointestinal Tract, Circulatory and Lymphatic System Infections, Anatomy of the Circulatory and Lymphatic Systems, Bacterial Infections of the Circulatory and Lymphatic Systems, Viral Infections of the Circulatory and Lymphatic Systems, Parasitic Infections of the Circulatory and Lymphatic Systems, Fungal and Parasitic Diseases of the Nervous System, Fundamentals of Physics and Chemistry Important to Microbiology, Taxonomy of Clinically Relevant Microorganisms, https://openstax.org/books/microbiology/pages/1-introduction, https://openstax.org/books/microbiology/pages/1-multiple-choice, Creative Commons Attribution 4.0 International License. microscopic with a fried egg shape. The normal composition of feces includes all of the following except: A. Bacteria B. a) Methyl red 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. b) Potato Dextrose Agar plate Categories: . requires five blood samples . A test tube contains 9ml distilled water. (3) Attempt to synthesized secondary metabolites outside of their natural environment. c) The optimum temperature for the growth of an organism must be above 50C The section contains MCQs on selective methods, pure cultures and cultural characteristics. a) parasitic b) Corticoviridae How to avoid the spreading of Microorganisms has been discussed. Clarification: The optimum temperature for the growth of an organism should be above 40C. 2. View Answer, 12. View Answer, 39. What is the approximate size of the bacterial cell? C) is used to prevent growth of halophiles. 5. d) Indicator dye technique 14. Answer: C a) viral infection a) above 1 percent 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. 1. d) proteins MCQ.9):Which bacteria have flagella of amphitrichous type means the flagellum are present at both the sides? Set up a series of 1/10 dilutions: a. B) nutrients are continuously fed into the reactor and the product is siphoned off during the run.
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