A) True Now, 1ml of that stock solution is taken and transferred to the 2nd test tube containing 9ml of distilled water. The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. Gram negative bacteria take the color of safranin stain and appear pink or red. b) Monotrichous Some of the frequently asked exam questions are as follows:-. Which of the following is the example of encapsulated gram-positive bacteria? c) holozoic C) are products that require additional processing before they can be packaged. A 7 year old girl developed a sore throat and fever for 2 days. 38) All of the following statements are correct about the most common bacteriological media called sheep blood agar that is used in the microbiology laboratory, b) Used for the culture of common fastidious bacteria, c) It is used for the culture of hemolytic bacteria. a) x-rays B) heat. c) Gram-negative bacteria As an Amazon Associate we earn from qualifying purchases. Thank you so much for sharing. Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? 5. 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. Primary treatment removes material that will either float or readily settle out by gravity. b) Rhodospirillum are not subject to the Creative Commons license and may not be reproduced without the prior and express written During the test, You will take off your clothes below your waist. Prokaryotes are unicellular microorganisms whose cells have no nucleus. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. View Answer, 25. C. Enrichment Culture technique What is the pH range of Bromophenol blue? View Answer, 20. View Answer, 49. 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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. 7: Isolation of an Antibiotic Producer from soil Screening of Microorganisms: Primary and Secondary Techniques Microorganisms - Groups, Characteristics, Importance and Uses - VEDANTU b) Nitrosococcus oceanus Which of the following is a prokaryotic microorganism? Plasmodium divides by which of the following method most commonly? View Answer, 22. Biological contaminants occur in the air as aerosols and may include bacteria, fungi, viruses, and pollens. 8. membranes of microorganisms. View Answer, 50. Vaccination was invented by ____________ Clarification: The use of Indicator Dye Technique is used for detection and isolation of the organisms which are organic acid producers. d) Pasteur 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. The colour of plate changes from red to yellow in the zone of organisms producing organic acid. c) Crick screening of microorganisms includes mcq. Yeast cells are good source of. PDF Question Bank Multiple choice - Virginia Tech The section contains multiple choice questions and answers on nutritional requirements, bacteriological media and physical conditions growth. 5. The section contains MCQs on chemotherapy historical highlights, antibiotics and their actions, microbiological assay of antibiotics, antifungal, antiviral and antitumour antibiotics. D. Indicator dye technique. [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). 10. 6. View Answer, 28. c) fecal streptococci Our Environment Class 10 MCQ Question 6. 4.E: Prokaryotic Diversity (Exercises) - Biology LibreTexts Label these plates 1/10 3 through 1/10 6. Which of the following is the most accurate method for microbial assay of antibiotics? b) teichoic acid Bacteria having clusters of flagella at both poles of cells are known as? a) above 1 percent Which of the following is the primary screening method? d) Physical assay Phagocytosis (article) | Foundation 2: Cells | Khan Academy APT test C. Elastase I D. Quantitative fecal fat testing: 6. View Answer, 26. View Answer, 32. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. Cystic fibrosis is an inherited disease, infection in the lungs and digestive system. The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. Which isolation technique is most effective? The microorganisms secrete the enzymes into their nutrient medium to make better use of it. Protozoa that eat other organisms are known as _______________ d) 2 micrometer in diameter The process is repeated several times until the requirement is met. c) Chlorella 12. The production of substances in industrial microbiology occur in the sequence: View Answer, 29. The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. Which of the following was NOT a kingdom in Linnaeuss taxonomy? b) Ferdinand Cohn Which of the following plate is used to detect and isolate organic acid producers? c) AIDS MCQs Bacteriology (1-10): With Answers and Explanations screening of microorganisms includes mcqshortest water tower in the world. c) Saccharomyces cerevisiae Sulphates are reduced to hydrogen sulphide by _____________________ Prokaryotes can be found everywhere on our planet, even in the most extreme environments. b) gamma rays 6. 7. C. Enrichment Culture technique Water and Wastewater Microbiology (Exam Questions) Chemical preservatives do NOT include View Answer, 6. 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. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. View Answer, 30. The section contains MCQs on phages structure and morphology, bacterial viruses replication, lysogeny and lytic. The presence of E. coli in a drinking water sample almost always indicates recent fecal contamination, meaning there is a greater . a) Crowded plate technique Rapid Diagnostic Tests for Infectious Diseases These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. 2011-2023 Sanfoundry. Secondary screening helps in detecting really useful microorganisms in fermentation processes, which includes a) electron beams and magnetic fields Your email address will not be published. Background F. Environmental Sampling - Centers for Disease Control and 4. True. View Answer, 33. Fecal coliform bacteria are a subgroup of total coliform bacteria. c) Enrichment Culture technique Acridine orange is which type of mutagen? Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. a) American Type Culture Collection These are non-enveloped viruses with a double-stranded DNA genome. a) Eremothecium ashbyi A) True Clean and disinfect surfaces that are touched often. B) False, When in doubt, throw it out. 250+ TOP MCQs on Microbes and Answers 2023 - FAQs Interview Questions 5. 5. They block floating debris such as wood, rags, and other bulky objects that could clog pipes or pumps. d) Candida milleri View Answer, 24. Microbiology MCQ (Multiple Choice Questions) - Sanfoundry B) nutrients are continuously fed into the reactor and the product is siphoned off during the run. c) Mycobacterium tuberculosis d) intercalating agents 11. Phagocytosis is a critical part of the immune system. Which of the following microorganism produces dextran? A. View Answer, 13. [2] The term for organisms that retain the . Bacterial Identification | 8 Methods & Tests In Microbiology - Study Read d) hydrophobic barrier and site of generation of protonmotive force Which of the following are present in teichoic acids? PDF Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi C) use of microbes in sewage and pollution control. Avoid contaminated food and water. A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. 5. Easy detection of the small percentage of useful microorganism. b) Fungi 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. b) Potato Dextrose Agar plate Answer: D Which of the following method is not used in isolation and screening of desired microorganisms? d) gene Sugar fermentation test: Bacteria is grown in a sugar media. Salting, as a preservative, d) Coliform bacteria. View Answer, 47. d) Malaria a) Gram-negative organisms D. Phenol red. c) Chemical assay 1999-2023, Rice University. Study with Quizlet and memorize flashcards containing terms like Which of the following is true about the trichomonas vaginalis? Answer: B C. The optimum temperature for the growth of an organism must be above 50C Secondary screening may be qualitative and quantitative in its approach. A) fermentation, downstream processing, removal of waste, inoculation. Which of the following method proceeds with 2-plate preparation?