b) Candida utilis D) prevent mold. The section contains MCQs on diseases caused by fungi and protozoa, therapeutic drugs for fungal treatment and protozoan diseases. b) Mesophile and psychrophile 1. False. However, if environmental contamination can enter the system, pathogens could get in too. A) fermentation, downstream processing, removal of waste, inoculation. a) viral infection 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 virus must not be able to lyse red blood cells. Q.1. 9. uses 100 grams of glucose in a 300ml solution. _______ are the agents that act as carriers of a pathogen and spread diseases. A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. d) Mycoplasmas The section contains multiple choice questions and answers on microorganisms characteristics and microbial classification. The greatest resolution in light microscopy can be obtained with ___________ 10. B) False, Pasteurization is used to sterilize milk. What is required for proper isolation of microorganisms? d) Pasteur then you must include on every digital page view the following attribution: Use the information below to generate a citation. A. C. Enrichment Culture technique Name three reserve materials synthesized by microorganisms and note which microbial groups Tyrocidines are more effective against ___________________ Growth of bacteria or microorganisms refer to __________________ A test tube contains 9ml distilled water. b. Q. Q.1: Screening of microorganisms includes . During their metabolism, microbes produce chemicals, some of which are used by human beings. Most E. coli bacteria are harmless and are found in great quantities in the intestines of people and warm-blooded animals. Creative Commons Attribution License c) Streptococci. Which isolation technique is most effective? 3. Which of the following plate is used to detect and isolate organic acid producers? (2) Chemical, physical and biological properties of a product are also determined during secondary screening. D) 134 oC for 1 second. 3. Which of the following is the example of encapsulated gram-positive bacteria? View Answer, 31. Chapter 2: Classification of Medically important Bacteria MCQs. View Answer, 7. a) 100-fold 8. Which of the following are important primary screening techniques? b) irregular b) Nitrosococcus oceanus What is the approximate size of the bacterial cell? B) False, HACCP Hazard Analysis and Critical Control Point uses random samples for quality control of the food supply. OpenStax is part of Rice University, which is a 501(c)(3) nonprofit. b) Treponema pallidum View Answer, 24. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? Bacteria having clusters of flagella at both poles of cells are known as? Phosphorus is essential component of __________ chipotle corporate phone number . c) Spirillum volutans b) Auxanographic technique A. c) magnetic fields 9. C) 72 oC for 15 seconds. Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. It is further followed by secondary screening, to check the capabilities and gain information about these organisms. True View Answer, 36. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? What is high throughput screening used for? 5. 8. View Answer, 2. d) Lophotrichous A. 3. The respiratory chain of bacteria is associated with the _____________ c) The optimum temperature for the growth of an organism must be above 50C. The organism must be genetically stable d) Thermophile c) AIDS The process is repeated several times until the requirement is met. 37) Which of the following is the selective media used for the cultivation and isolation of. The section contains MCQs on phages structure and morphology, bacterial viruses replication, lysogeny and lytic. Full-form of ATCC is _________ Secondary screening can give information about, (1) The genetic instability in microbial cultures, (2) Number of products produced in a single fermentation, 8. Question 6. a) Growth Factor producers A) True A 19-year-old male living in a tropical region of India visited the hospital. Biotechnology, the practical application of microorganisms in making products for human use, is a relatively new science, begun since Pasteur's time. 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. c) Chlorophycophyta 7. 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. Clarification: Auxanographic technique proceeds with 2-plate preparation. 2. a) parasitic Clarification: The Antibiotic producers show the zone of inhibition. d) Indicator dye technique b) transposons Which of the following is the primary screening method? C) maintain a high osmotic pressure to kill microorganisms. View Answer. 4. View Answer, 9. . 6. B) inhibit germination of botulism spores. the virus must be able to cross-link red blood cells directly. d) Indicator dye technique d) intercalating agents C. The optimum temperature for the growth of an organism must be above 50C b) Thymol blue A) True b) vitamins B) inoculation, downstream processing, fermentation, removal of waste. a) above 1 percent The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. Which of the following is used in electron microscope? Except where otherwise noted, textbooks on this site B. Auxanographic technique d) Phaeophycophyta The microorganisms secrete the enzymes into their nutrient medium to make better use of it. The section contains questions and answers on control fundamentals, physical agents, chemical agents characteristics, antimicrobial agents groups and antimicrobial chemical agents evaluation. Here are 1000 MCQs on Microbiology (Chapterwise). View Answer, 34. a) glycerol residues c) rod shaped d) bacterial infection and you must attribute OpenStax. B. Auxanographic technique Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. A. American Type Culture Collection 12. Clarification: The transfer of a 1ml solution to 9ml d/w is called as serial 10-fold dilution. D) removal of waste, inoculation, fermentation, downstream processing. determined to obtain accurate susceptibility results. a) Small pox c) Study of organisms that are not visible to naked eyes It is 50,000X magnified image of a bacterium. Juli 2022 b) cellulose Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. Which of the following method is not used in isolation and screening of desired microorganisms? 4.1: Prokaryote Habitats, Relationships, and Microbiomes. a) Mesophile A) organic acids. Rhizobium bacteria. (1) Its a process for the detection and isolation of microorganisms of our interest. The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme View Answer, 4. 2. Which of the following are the growth morphology of the protozoa? Which of the following are present in teichoic acids? It is the zone where only the growth of a particular colony is observed whereas rest all colonies get degraded by antibiotics. 1g of soil is added to that test tube and the soil is allowed to settle down. D. American Type Classifier and Collection. c) Bacillus thuringiensis c) Desulfotomaculum sp. 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? In this process the bacterium, which is a single cell, divides into two identical daughter cells. Which of the following foods is NOT made by fermentation? a) DNA polymerase III Answer: 1. 6. Measles is a disease caused by a virus, it is spread via respiratory droplets. A BV test is done in a similar way as a pelvic exam or Pap smear. d) Phenol red Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. lack of cell wall. [2][3] S. aureus is found in the . b) Study of animals and their family 2011-2023 Sanfoundry. 10. 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. Which of the following is the source of Vitamin A. B) mass, controlled culture of microbes to synthesize products. Lipopolysaccharide in cell walls is characteristic of? is affected by the patient's food intake on the day of testing. a) x-rays Which of the following method is used for the isolation of mutants? 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. a) anaerobic cells d) All of the mentioned b. not washing hands before and after lab . (3) It does not provide many ideas about the production or yield potential of microorganisms. True. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. Which one of the following is called as the 'brewers yeast'. d) chitin, cellulose, or hemicellulose 4. 6. Give the steps of typical sewage treatment plant are as given below. d) 2 micrometer in diameter 7. 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. Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? d) Rose Bengal Agar plate Our Environment Class 10 MCQ Question 6. a) Eremothecium ashbyi Which of the following dye is colourless at acidic pH and becomes red at basic pH? True Urinary tract infection was suspected, urine sample and swab specimen were taken and cultured on suitable agar media, a microscopic examination was performed. Crowded plate technique Ans: The steps adopted in a typical sewage treatment plant are as given below: ADVERTISEMENTS: View Answer, 39. Butanol is obtained by fermenting molasses by. d) Eyepiece lens All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. milk, meat, green vegetables, fruits, etc.) This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. 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. Auxanographic technique Microbiology is the study of living organisms that are not visible to the naked eyes. Microorganisms are minute, unicellular organisms that aren't visible to the naked eye. a) True It is used to reduce the dense culture of cells to usable concentration. c) Phenolphthalein The section contains multiple choice questions and answers on soil microorganisms interactions, nitrogen, carbon and sulphur cycles, aquatic environment, aquatic microorganisms techniques and productivity. b) Ferdinand Cohn You will lie on your back on an exam table, with your feet in stirrups. False. b. Litmus milk test: When bacteria is grown in this medium, there may be the production of acids or alkali or even no change in pH. Which was the first disease for which a chemotherapeutic agent was used? What is the name of the procedure performed under sterile conditions to eliminate The well-isolated colonies are antibiotic producers with the zone of inhibition. Multiple Choice. B) 62.3oC for 30 minutes. Which scientist proposed adding a kingdom for protists? Which microorganism(s) among the following perform photosynthesis by utilizing light? The microorganisms from lakes and rivers can grow at a salt concentration of _________ C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. Candidiasis is a fungal infection, skin infection, and mouth or vaginal infection that can occur due to the overgrowth of the fungus. c) Cyanobacteria Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. 5. 2. Enrichment culture technique was developed by_________, 16. It is done by using paper, thin layer or other chromatographic techniques. Answer: C View Answer, 7. 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. View Answer, 41. View Answer, 50. Our members have a unique depth and breadth of knowledge about the discipline. 12. The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. View Answer, 3. The Society's role is to help unlock and harness . c) Enrichment Culture technique 10. C) alcohol. Glycosylated hemoglobin: causes sickle cell anemia. View Answer, 10. Fecal coliform bacteria are a subgroup of total coliform bacteria. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. The prototrophs are the organisms which are not capable of synthesizing all growth requirements for themselves. 1. About Oracle NetSuite. A. In this process desired microorganism is generally isolated from a natural environment like soil, which . d) cathode rays Everything you need to know about water and wastewater microbiology. View Answer, 8. Crowded plate technique Now that you have read Lesson 5 and have completed the exercises, you should be ready to take the self-assessment quiz. It is the organization which has the largest department of Research and Development. You will get a gown or sheet as a cover. Sulphur can be utilized by bacteria in the a. b) Potato Dextrose Agar plate A) True 15. 1. It should have a fast rate of kill of micro-organisms. Set up a series of 1/10 dilutions: a. Clarification: ATCC stands for American Type Culture Collection. d) both aerobic and anaerobic cells c) Streptococcus thermophilus c) Lactobacilli Gram negative bacteria take the color of safranin stain and appear pink or red. D) are harvested during the exponential phase of growth. d) Shortest wavelength of visible light used and an objective with the maximum numerical aperture A) manipulating the growth environment. a) Streptomyces sp. Examples of microorganisms include bacteria, archaea, algae, protozoa, and microscopic animals such as the dust mite. 3.0 4.6 The common symptoms are pink or red spots on the skin surface, dry cough, and runny nose. Plasmodium divides by which of the following method most commonly? Required fields are marked *. 5. c) nucleotides D) exposure. Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. a) Thiobacillus thiooxidans b) gamma rays Air Sampling. MCQ.8): In which of the following bacterial condition, fimbriae helps the bacteria to stick to the mucous membrane of the host? b) The organism must be able to produce a high yield of product Some bacteria are capable of spore formation so they are highly heat resistant and some are capable of producing heat-resistant toxins. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo A. Protozoa that eat other organisms are known as _______________ d) saprophytic B. The section contains MCQs on spirochetes, negative rods, cocci, facultatively anaerobic gram, rickettsias and chlamydias, mycoplasmas, positive cocci and positive bacteria. a) peptidoglycan All of the above. A) True View Answer, 22. View Answer, 11. Acridine orange is which type of mutagen? 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. Antibiotic producers Which of the following is a type of fungal microorganism? Which of the following is NOT a criterion for the choice of an organism? Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. 30 seconds. a) electron beams and magnetic fields Therefore, in screening experiments for the selection of PGPM it is necessary to know about the environmental requirements of the target plant and . Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. c) Enrichment Culture technique b) Biological assay A 70 year old male visited a clinic with chronic cough, chest pain, fever, chills, and weakness. D) small-scale production is used to synthesize product. Wash your hands with soap and water for at least 20 seconds. A microorganism is a living thing that is too small to be seen with the naked eye. B) False, Yeast cells prefer aerobic conditions to multiply in number. For e.g., cellulose producers grow on nutrient medium supplied with cellulose. For this dilution, it may be said that the solution was diluted _______ Who was the first to observe animalcules under the microscope? Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. Answer: B View Answer, 4. a) Crowded plate technique answer choices. b) Viruses View Answer, 2. Who is known as the father of Microbiology? B. How do you isolate microorganisms in the air? answer choices. d) Amino acid producers View Answer, 35. 11. a) phospholipids 30 seconds. 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. d) Indicator dye technique C. MacConkeys Agar plate a) Killing all microorganisms. [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). It belongs to the phthalein family that is employed as an acid-base indicator. d) an increase in the mass of an individual organism C. Enrichment Culture technique Penicillin causes inhibition of Mycoplasmas. c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. MCQ Questions for Class 8 Science: Ch 2 Microorganisms: Friend and Foe. 11. 6.8 - 7.2 b. a) Gram-negative organisms A. c) neither aerobic and anaerobic cells 9. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. D. 6.4 8.0. Your email address will not be published. Biology Multiple Choice Questions on Microbes.