a) Crowded plate technique Clarification: Phenolphthalein has a pH range between 8.0 10.0. It is done by using paper, thin layer or other chromatographic techniques. Which of the following microorganism has the cocci cell shapes and sizes arranged usually in tetrad structures? c) Enrichment Culture technique d) Coliform bacteria. B) False, Yeast cells prefer aerobic conditions to multiply in number. 6. For e.g., cellulose producers grow on nutrient medium supplied with cellulose. Which among the following are microaerophilic bacteria? View Answer, 31. In this process desired microorganism is generally isolated from a natural environment like soil, which . Which of the following is a family of lambda phage viruses? Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. D. American Type Classifier and Collection. Which of the following plate is used to detect and isolate organic acid producers? a) x-rays c) 2.5 to 4 percent Clarification: The Antibiotic producers show the zone of inhibition. d) DNA polymerase II Wish you the best in your endeavor to learn and master Microbiology! then you must include on every digital page view the following attribution: Use the information below to generate a citation. D. Indicator dye technique. Which of the following dye is colourless at acidic pH and becomes red at basic pH? Clarification: ATCC stands for American Type Culture Collection. Microbiology is the study of living organisms that are not visible to the naked eyes. A BV test is done in a similar way as a pelvic exam or Pap smear. b) ribitol residues d) Primary treatment Microscopic examination and culture of the sputum sample revealed gram-positive cocci that appear in chains. Crowded plate technique Screening - It refers to the isolation of only those microorganisms which are of interest from among a large population of microbes. 2. c) Gram-negative bacteria Set up a series of 1/10 dilutions: a. A test tube contains 9ml distilled water. Answer: B Secondary metabolites b) teichoic acid What is the fecal test that requires a 3-day specimen? Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? B. The bacterial cell then elongates and splits into two daughter cells each with identical DNA to the parent cell. 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. For which viral disease, vaccine has been recently developed through the use of tissue culture? Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. (4) Attempt to Stain microorganisms. a) chemical compounds Sanfoundry Global Education & Learning Series Fermentation Technology. Prokaryotes are very flexible metabolically, so they are able to adjust their feeding to the available natural resources. A skin biopsy test was performed and the infection was diagnosed to be a parasitic infection. a) Mesophile 2. The section contains questions and answers on light microscope, microbial Stains, transmission and scanning electron microscope. chipotle corporate phone number . b) Study of animals and their family Which of the following is not related to microbes?a) Microbes are not ideal for biotechnologyb) Microbes produce chemicals during their metabolismc) Microbes can be grown on artificial mediumd) Microbes can live in highly acidic mediumAnswer: aClarification: Microbes can be grown on artificial cultures media where they form colonies. A) True View Answer. How do you isolate microorganisms from the soil? 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. lack of cell wall. Your email address will not be published. Antibiotic producers Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? [2] The term for organisms that retain the . The Society's role is to help unlock and harness . In which of the following treatment involve oxidation of organic constituents of the wastewater? Chapter 3: Classification of Viruses MCQs. a) Thiobacillus thiooxidans Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed? (3) Attempt to synthesized secondary metabolites outside of their natural environment. 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[1] Often the first test performed, gram staining involves the use of crystal violet or methylene blue as the primary color. B. MCQ on Industrial Microbiology. What are the methods of isolating the pure culture of microorganisms? What is high throughput screening used for? 1. View Answer, 28. Who is considered the father of Western medicine? Lipopolysaccharide in cell walls is characteristic of? b) 0.5 to 1.0 micrometer in diameter a) Cyanobacteria, Fungi and Viruses View Answer, 12. Methyl red c. confining long hair and loose clothing . 5. Juli 2022 View Answer, 46. Screening includes primary screening and secondary screening. 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D) all of the above. Self-Assessment Quiz. Industrial microbiologists use "tricks" to increase the amount of chosen end product; this may include 3. a) Nitrospina gracilis A. In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms? is affected by the patient's food intake on the day of testing. Clarification: The Auxanographic technique is used for the detection and isolation of the organisms which are growth factor producers. b) cell wall Answer: C A) True 1. includes 6 urine samples. a) Final treatment d) All of the mentioned Air Sampling. Blood C. Electrolytes D. Water: 5. b) plaque Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? The Gram staining is one of the most crucial staining techniques in microbiology. 7. b. not washing hands before and after lab . Full-form of ATCC is _________ ---- >> Below are the Related Posts of Above Questions :::------>>[MOST IMPORTANT]<. View Answer, 10. D) are harvested during the exponential phase of growth. You can also prevent infections through: Hand-washing. A) True The screening is isolation and detection of microorganisms of interest. Chemical preservatives do NOT include c) Psychrophile Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. Microorganism Definition. a) above 1 percent b) Streptomyces olivaceus 1. (1) Optimal temperature for growth, (2) Optimal oxygen requirements, (3) Optimal nutritional needs (4) All of the above. c) Peritrichous View Answer, 49. (3) It provides information on whether the product formed by microorganisms is new or not. Crowded plate technique However, in a contemporary sense, we associate biotechnology with the direct alteration of an organism's genetics to achieve desirable traits through the process of genetic engineering. 2. b) irregular microscopic with a fried egg shape. It changes from yellow at pH 3.0 to blue-violet at pH 4.6. (Or show it to your microbiology professor, just for fun.) Definition: true bacteria; bacteria excluding the archaea. Chrysolaminarin is the reserved food of ___________________ c) nucleotides Best method of sterilization at commercial level is a) Hot air oven b) Autoclaving c) Radiation d) Sun light answer-C 5. a) True a) 3.0 4.6 Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. They are mainly of two types: Primary and Secondary Screening Primary Screening : The effective screening must in one or few steps which allow the discarding of many valueless microorganisms, while at the . Which of the following types of mutants can be isolated using the replica plate technique? d) 5 percent 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. You can also download the PDF of Microbiology MCQs by applying below. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? c) AIDS a) Spread-plate During their metabolism, microbes produce chemicals, some of which are used by human beings. a) 100-fold The section contains multiple choice questions and answers on soil microorganisms interactions, nitrogen, carbon and sulphur cycles, aquatic environment, aquatic microorganisms techniques and productivity. 6.8 - 7.2 b. 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. chp 25 microbiology 211 mcq. d) Indicator dye technique d) 2-fold d) Pour plate Growth Factor producers 2. Who is considered the "father of Western medicine"? We recommend using a The reason they are called microorganisms is that you can only see them when you use a microscope. b) Magnifying lens 3. This reduces the cooling costs in large scale fermenters. Which of the following dye is colourless at acidic pH and becomes red at basic pH? D. Indicator dye technique. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. View Answer, 4. A. Fecal occult blood B. 4. 4. Salting, as a preservative, The microorganisms secrete the enzymes into their nutrient medium to make better use of it. c) fecal streptococci a) The organism must be genetically stable d) hydrophobic barrier and site of generation of protonmotive force Which of the following method is useful for detection and isolation of those microorganisms which are capable of growing on a particular nutrient medium? B. C. Enrichment Culture technique Nitrates maintain the red color of preserved meats and View Answer, 36. Our mission is to improve educational access and learning for everyone. Which of the following yeast can be used to produce microbial protein? D) exposure. Gram negative bacteria take the color of safranin stain and appear pink or red. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. False. C. Enrichment Culture technique Which of the following are present in teichoic acids? Auxanography technique is employed for detecting microorganisms able to produce__________. Which of the following is the primary screening method? requires five blood samples . c) Chlorella 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? B. Auxanographic technique b) Xanthophycophyta 3. Bacteria having clusters of flagella at both poles of cells are known as? Q.1. Microbiology is the study of : 3. a) Chemical and biological assay View Answer, 12. Urinary tract infection was suspected, urine sample and swab specimen were taken and cultured on suitable agar media, a microscopic examination was performed. b) below 1 percent Prokaryotes are unicellular microorganisms whose cells have no nucleus. Contact Us. Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a For this dilution, it may be said that the solution was diluted _______ Question 6. Crowded plate technique What is the pH range of Bromophenol blue? 11. Place 6 test tubes into a rack and fill each with 9ml of 0.9% NaCl solution. B. 30 seconds. Creative Commons Attribution License d) Study of microscope C) is used to prevent growth of halophiles. The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo 10. 4. Who proposed that swamps might harbor tiny, disease-causing animals too small to see? 3. a) American Type Culture Collection 7. A) retards growth of Staphylococcus aureus. c) Secondary treatment D. Hanging Drop technique. c) Desulfotomaculum sp. B. Auxanographic technique Which of the following is the standard resource for identifying bacteria? d) Rose Bengal Agar plate Secondary screening may be qualitative and quantitative in its approach. MCQ on Our Environment Question 9. b) Antibiotic producers The section contains questions and answers on diseases caused by staphylococcus, streptococcus, corynebacterium, aerobic and anaerobic gram, viruses containing single and double stranded dna. a) Leuconostoc citrovorum C) are products that require additional processing before they can be packaged. b) Streak-plate 8. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. What is the pH range of Bromophenol blue? d) cathode rays Fermentation Technology Questions on Isolation and Screening of Industrially Important Microbes. A. 1. View Answer, 50. Want to cite, share, or modify this book? Which of the following is NOT a criterion for the choice of an organism? Which of the following method proceeds with 2-plate preparation? Q. Q.1: Screening of microorganisms includes . d) Malaria A) True The process is repeated several times until the requirement is met. 3. C) inoculation, fermentation, downstream processing, removal of waste.
