a) Leuconostoc citrovorum b) Gram-positive organisms b) Ferdinand Cohn View Answer, 28. Which of the following media is used for screening amylase? Which shape of bacteria has been shown in the following diagram?a) Rod-shapedb) Comma shapedc) Spiral shapedd) Spherical shapedAnswer: dClarification: The following diagram represents spherical shaped bacteria, magnified 1500X. screening of microorganisms includes mcq. View Answer, 17. Label these plates 1/10 3 through 1/10 6. View Answer, 12. In which of the following treatment involve oxidation of organic constituents of the wastewater? a) Chemical and biological assay b) Auxanographic technique are not subject to the Creative Commons license and may not be reproduced without the prior and express written 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. Report an issue. Microbial Enzyme - an overview | ScienceDirect Topics Performance and sterility testing of media lots should also be determined and For this dilution, it may be said that the solution was diluted _______ The Gram staining is one of the most crucial staining techniques in microbiology. Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. a) True 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. The "flash method" or "high temperature short time" method exposes fluids to b) Streptomyces olivaceus membranes of microorganisms. 7. MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe c) Secondary treatment A) organic acids. Phosphorus is essential component of __________ Microbes can live in highly acidic as well as an alkaline medium. 4. 13. During the test, You will take off your clothes below your waist. Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a A. D) exposure. D. 2-fold. 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. B. d) Rose Bengal Agar plate Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. c) Enrichment Culture technique Which of the following method proceeds with 2-plate preparation? MCQ Questions for Class 10 Science Our Environment with Answers MCQ's For Lab Technician And Technologists - Part 6 - Lab Tests Guide 2. Clarification: Adenoviruses cause respiratory infections. PDF Question Bank Multiple choice - Virginia Tech 1g of soil is added to that test tube and the soil is allowed to settle down. Besides macroscopic plants and animals, microbes are the major components of biological systems on this earth. b) Rhodospirillum (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. c) base analog a) Crowded plate technique D. Indicator dye technique. B) False, When in doubt, throw it out. C) new batches of microorganisms are screened for increased yield. B. Auxanographic technique Defined media and complex media are two broad classes of culture media used in microbiology. 14. a) viruses 10. 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. False. D. Amino acid producers. C. Phenolphthalein The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. B. Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? lauren conrad and stephen colletti /; 2. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . (1) Screen organic acid-producing microbes. Which organisms show the zone of inhibition grown on a Petri plate? [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). d) Indicator dye technique c) Saccharomyces cerevisiae B) are by-products of metabolism that are not important to microbe function. Vaccination was invented by ____________ B. Auxanographic technique c) Gram-negative bacteria (2) Attempt to kill microorganisms outside of their natural environment. Penicillin causes inhibition of Mycoplasmas. b) teichoic acid b) Borrelia a. Streptococcus pyogens b. B) 62.3oC for 30 minutes. Identify bacteriophage. d) Candida milleri View Answer, 26. Q. Q.1: Screening of microorganisms includes . C. Enrichment Culture technique Lipopolysaccharide in cell walls is characteristic of? Note when energy and additional compounds are necessary for any of these mechanisms to operate. d) Lophotrichous It should have a fast rate of kill of micro-organisms. a) Eremothecium ashbyi d) 6.4 8.0 The act of phagocytizing pathogenic or foreign particles allows cells of the immune system to know what they are fighting against. A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. Crowded plate technique d) American Type Classifier and Collection b) coliforms 3.0 4.6 View Answer, 11. 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) The organism must be genetically stable. Methyl red d) Cristispira Which scientist proposed adding a kingdom for protists? 15. Now that you have read Lesson 5 and have completed the exercises, you should be ready to take the self-assessment quiz. The reason they are called microorganisms is that you can only see them when you use a microscope. 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? Chapter 2: Classification of Medically important Bacteria MCQs. 2. b) Microbacteria B) False, Pasteurization is used to sterilize milk. True. c) Enrichment Culture technique Required fields are marked *. B. Auxanographic technique d) Pasteur d) both aerobic and anaerobic cells _______ are the agents that act as carriers of a pathogen and spread diseases. a) Treponema b) ribitol residues In this process the bacterium, which is a single cell, divides into two identical daughter cells. The microorganisms from lakes and rivers can grow at a salt concentration of _________ b) Magnifying lens View Answer, 23. Screens are made of long, closely spaced, narrow metal bars. 9. Isolation of Microorganisms MCQ Questions and Answers chp 25 microbiology 211 mcq Flashcards | Quizlet 6. d) The organism must be able to grow in an easily available nutrient medium View Answer, 10. c) nucleotides 7. b) Rabies uses 100 grams of glucose in a 300ml solution. The Quizzes about Fecal Analysis (32 tests) - MedQuizzes A. Water and Wastewater Microbiology (Exam Questions) a) Small pox uses 50 grams of glucose in a 500ml solution. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. Chrysolaminarin is the reserved food of ___________________ d) Phaeophycophyta 5. D) A and C . b) 8.0 10.0 Name three reserve materials synthesized by microorganisms and note which microbial groups d) The organism must be able to grow in an easily available nutrient medium. Staphylococcus Aureus - StatPearls - NCBI Bookshelf a) Shortest wavelength of visible light used the virus must not be able to lyse red blood cells. Which of the following is the example of encapsulated gram-positive bacteria? 5.6 - 8.2 form of c. 3.0 - 6.0 d. 8.0 - 14.0 a. Organic compounds b. Inorganic compounds 14. Eubacteria can be either gram-negative or gram-positive, they have economic, agricultural, and medical importance. a) site of generation of protonmotive force 1. The section contains questions and answers on sanitary quality of water, wastewater, treatment processes, fresh foods microbial flora, food preservation and microorganisms. coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. As an Amazon Associate we earn from qualifying purchases. 4. Viral hemagglutination assays only work with certain types of viruses because. 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? View Answer, 46. Antibiotic producing microorganisms can be detected by the method__________, 5. MCQ on Our Environment Question 9. D. 6.4 8.0. Self-Assessment Quiz. Which of the following method proceeds with 2-plate preparation? 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. Sulphur can be utilized by bacteria in the a. Which of the following are true for cytoplasmic membrane? Crowded plate technique d) Gram-positive bacteria Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. d) mitochondrial membrane 10. Which of the following foods is NOT made by fermentation? It is colourless at pH 8.0 and becomes red at pH above 10.0. 15. A. American Type Culture Collection Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? 6. Which of the following yeast can be used to produce microbial protein? c) Peritrichous 2. d) Antoni van Leeuwenhoek Which of the following method is not used in isolation and screening of desired microorganisms? A. View Answer, 42. a) fats It is a non-profit organization and a key resource for medical research. c) UV light View Answer, 8. 2. View Answer, 44. Screening of Industrially Important Microorganism - MCQ Questions OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. a) Gram-negative organisms a) Regeneration (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. View Answer. B) inhibit germination of botulism spores. b) Longest wavelength of visible light used Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. Several microbes are useful to humans in diverse ways like in household products, industrial products, agricultural products, etc. Enrichment culture technique was developed by_________, 16. You will get a gown or sheet as a cover. Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. then you must include on every digital page view the following attribution: Use the information below to generate a citation. c) Chlorella It should not leave damage and odour. a) electron beams and magnetic fields a) DNA polymerase III 2. Secondary metabolites d) glucose residues Primary treatment removes material that will either float or readily settle out by gravity. Answer: B chp 25 microbiology 211 mcq. A) retards growth of Staphylococcus aureus. A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. The methods for isolation and screening are a crowded plate, auxanography, enrichment culture and use of indicator dyes. b) Auxanographic technique The Society's role is to help unlock and harness . Sulphates are reduced to hydrogen sulphide by _____________________ 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. 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. Crowded plate technique Microorganisms Class 8 Notes, Question Answers - successcds View Answer, 13. It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. A. Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? a) Methyl red a) Cyanobacteria, Fungi and Viruses What does a viral DNA becomes after being associated with the bacterial chromosome? screening of microorganisms includes mcq; screening of microorganisms includes mcq. c) MacConkeys Agar plate You can also prevent infections through: Hand-washing. c) an increase in the size of an individual organism Clarification: ATCC stands for American Type Culture Collection. 4. 6. We recommend using a a) 1mm in diameter 1. This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. Measles is a disease caused by a virus, it is spread via respiratory droplets. Who is considered the father of Western medicine? d) Indicator dye technique C. 5 8 PDF Laboratory Methodologies for Bacterial Antimicrobial - Woah A BV test is done in a similar way as a pelvic exam or Pap smear. 14. (PDF) Screening for Microbes Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes d) gene 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. a) above 1 percent What is the pH range of Bromophenol blue? Indeed, until Anton von Leeuwenhoek invented . 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. C) selecting microbial strains that lack a feedback system. d) Pour plate a) Crowded plate technique Microorganisms are minute, unicellular organisms that aren't visible to the naked eye. You can also download the PDF of Microbiology MCQs by applying below. Q.1. Ch. 1 Multiple Choice - Microbiology | OpenStax The section contains questions and answers on cell division modes, bacteria growth cycle and quantitative measurement. Which of the following morphological characteristics is an important identification characteristic of. a) Neisseria gonorrhoeae. Answer: D 26. a) Thiobacillus thiooxidans d) hydrophobic barrier and site of generation of protonmotive force 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. Which of the following plate is used to detect and isolate organic acid producers? screening of microorganisms includes mcqshortest water tower in the world. However, if environmental contamination can enter the system, pathogens could get in too. 5. B) inoculation, downstream processing, fermentation, removal of waste. c) Mycobacterium tuberculosis Crowded plate technique 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. A) are essential to microbe function. 8. Creative Commons Attribution License 3. Which among the following are Spirochetes? The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. c) Mumps Symptoms include cough and lung infection. It doesn't include viruses and prions because they are classified as non-living. The objective of this study was to isolate, identify, and screen the potential antimicrobial-producing . Antibiotic producers View Answer, 10. View Answer. Wastewater treatment - Primary treatment | Britannica 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. You may refer to the lesson text whenever you are unsure of the answer. 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. A) True Water treatment typically requires three stages to make it potable from sewage. Staphylococcus aureus is a major bacterial human pathogen that causes a wide variety of clinical manifestations. 9. 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. Answer: B d) Thermophile Microbiology Multiple Choice Questions and Answers (MCQs) d) Coliforms Background F. Environmental Sampling - Centers for Disease Control and 3. Who was the first to observe "animalcules" under the microscope? 5. c) Enrichment Culture technique Place 6 test tubes into a rack and fill each with 9ml of 0.9% NaCl solution. 2. 7. c) Lactobacilli Binary fission begins when the DNA of the bacterium divides into two (replicates). Which of the following is NOT a criterion for the choice of an organism? b) Automatic Type Counter & Classifier Screening of industrial Microorganisms Quiz - Quizizz 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. c) parasitic infection b) Thymol blue It is the organization which has the largest department of Research and Development. B. What is the fecal test that requires a 3-day specimen? A microorganism is a living thing that is too small to be seen with the naked eye. c) Nitrosomonas europaea Disinfection MCQ [Free PDF] - Objective Question Answer for - Testbook 3. Bacterial Identification | 8 Methods & Tests In Microbiology - Study Read 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.
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