screening of microorganisms includes mcq

Wish you the best in your endeavor to learn and master Microbiology! Which of the following is not a subfield of microbiology? 3. The section contains MCQs on phages structure and morphology, bacterial viruses replication, lysogeny and lytic. Which isolation technique is most effective? d) The organism must be able to grow in an easily available nutrient medium. b) Study of animals and their family (4) This may be accomplished by paper, thin layer, chromatographic technique. b) mutualistic b) Corticoviridae Clarification: The question mark in the following figure represents flagella of a rod-shaped bacterium. The respiratory chain of bacteria is associated with the _____________ c) Cyanobacteria Which of the following types of microorganisms is photosynthetic? How to avoid the spreading of Microorganisms has been discussed. 4.1: Prokaryote Habitats, Relationships, and Microbiomes. C) inoculation, fermentation, downstream processing, removal of waste. d) cathode rays Aims and objectives. View Answer, 45. Besides macroscopic plants and animals, microbes are the major components of biological systems on this earth. How do you isolate microorganisms in the air? Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . Which one of the following organisms is least likely to cause this illness? B. Auxanographic technique 11. a) Small pox View Answer, 2. Who is known as the father of Microbiology? Growth Factor producers Which of the following dye is colourless at acidic pH and becomes red at basic pH? Which of the following method is useful for isolation and detection of organisms having the ability to produce organic acids? Which of the following inhibits DNA replication? Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced . d) Hanging Drop technique d) Indicator dye technique The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. b) ribitol residues View Answer. Biology Multiple Choice Questions on Microbes. 1. a) Growth Factor producers d) DNA polymerase II What is required for proper isolation of microorganisms? c) Enrichment Culture technique 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. 100-fold (Or show it to your microbiology professor, just for fun.) View Answer. A) radiation. Clarification: Phenol Red plate is used to detect and isolate organic acid producers. lauren conrad and stephen colletti /; 2. View Answer, 6. 9. 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? Bacteria having clusters of flagella at both poles of cells are known as? b) Auxanographic technique membranes of microorganisms. 7. Gram negative bacteria take the color of safranin stain and appear pink or red. You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. b) mycotic infection View Answer, 5. MCQ on Our Environment Question 9. The reason they are called microorganisms is that you can only see them when you use a microscope. Which of the following plate is used to detect and isolate organic acid producers? 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. A) production of alcoholic beverages by microorganisms. C. Enrichment Culture technique requires five blood samples . b) Thymol blue (3) Attempt to synthesized secondary metabolites outside of their natural environment. View Answer, 47. b) light waves b) hexokinase 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. D. Indicator dye technique. View Answer, 38. Some of the frequently asked exam questions are as follows:-. 11. You will lie on your back on an exam table, with your feet in stirrups. C) are products that require additional processing before they can be packaged. 2. 7. c) prophage a) Nitrospina gracilis b) 8.0 10.0 Microbiology Question Bank PDF book covers problem solving exam tests from microbiology textbook and practical book's chapters as: Chapter 1: Basic Mycology MCQs. Give the steps of typical sewage treatment plant are as given below. 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, 30. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . View Answer, 7. c) Secondary treatment 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. d) saprophytic View Answer, 49. View Answer, 8. Which of the following microorganism is eliminated in canned foods? Blood C. Electrolytes D. Water: 5. 12. Screening includes primary screening and secondary screening. 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. c) rod shaped Which shape of bacteria has been represented in the following diagram?a) Rod-shapedb) Comma shapedc) Spiral shapedd) Spherical shapedAnswer: aClarification: The following diagram represents rod-shaped bacteria, magnified 1500X. Has three to five flagella at the posterior end B. Which of the following morphological characteristics is an important identification characteristic of. The Society's role is to help unlock and harness . Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. c) Lactobacilli The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. c) DNA polymerase I d) Pedoviridae 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. Fermentation Technology Questions on Isolation and Screening of Industrially Important Microbes. Your health care provider will insert a special tool called a speculum into your vagina. Full-form of ATCC is _________ b) The examination of the infection sites, c) They are prokaryotes in cellular organization. B) False, Hot foods must be maintained above 60 oC to inhibit microbial growth. B. Auxanographic technique View Answer, 41. b) 0.5 to 1.0 micrometer in diameter 1. False. C. 1000-fold c) parasitic infection 14. a) Leuconostoc citrovorum View Answer, 21. All the microorganisms such as amoeba, protozoa, viruses, bacteria are studied under microbiology. B) nutrients are continuously fed into the reactor and the product is siphoned off during the run. Which of the following is a correct usage of binomial nomenclature? A) True We recommend using a c) Spirochaeta a) Bacillariophycophyta d) gene The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme Universal aseptic techniques includes, Except a) Gown b) Mask c) Cough Etiquettes d) Hand washing answer-D 4. 1. During their metabolism, microbes produce chemicals, some of which are used by human beings. It is done by using paper, thin layer or other chromatographic techniques. Note when energy and additional compounds are necessary for any of these mechanisms to operate. d) Study of microscope 2. a) True What is high throughput screening used for? c) neither aerobic and anaerobic cells a) Crowded plate technique a) Methyl red the virus must not be able to lyse red blood cells. c) Enrichment Culture technique Which of the following dye is colourless at acidic pH and becomes red at basic pH? Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. Phagocytosis is a critical part of the immune system. B. b) RNA polymerase You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. 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. Which of the following method is useful for the isolation and detection of organisms having the ability to produce antibiotics? False. C) sugar. Air Sampling. d) cellulase Which among the following is not an ammonia-oxidizing bacteria? c) Enrichment Culture technique b) Streak-plate 2. b) Nitrosococcus oceanus D. Phenol red. D) prevent mold. d) glucose residues Types of pathogens include specific bacteria strains, viruses, fungi, or parasites that can cause illness in its host. C. perfringens is a spore-forming bacteria, that produce H 2 S and hemolysis on blood agar. d) Photosynthetic sulfur bacteria c) beta-glucosidase This book uses the Which of the following is the most accurate method for microbial assay of antibiotics? c) nucleotides Name three reserve materials synthesized by microorganisms and note which microbial groups a) electron beams and magnetic fields d) Gram-positive bacteria Which of the following statement is correct regarding primary screening________. Who is considered the father of Western medicine? These are non-enveloped viruses with a double-stranded DNA genome. b. a) Phenol red plate 3. The section contains MCQs on size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall. Which of the following method can be used to determine the number of bacteria quantitatively? d) hydrophobic barrier and site of generation of protonmotive force Which of the following bacteria is an endospore-forming bacteria that is also a common foodborne pathogen? A BV test is done in a similar way as a pelvic exam or Pap smear. View Answer, 14. C. The optimum temperature for the growth of an organism must be above 50C 40) Biochemical tests are a common and conventional laboratory procedure in the differentiation and identification of enteric bacteria. 6. A. A) True Which of the following is the primary screening method? Microbes are only present in hot and humid areas.a) Trueb) FalseAnswer: bClarification: Microbes occur everywhere- in soil, water, air, inside our bodies and that of other animals and plants. It is colourless at pH 8.0 and becomes red at pH above 10.0. Our members have a unique depth and breadth of knowledge about the discipline. The process is repeated several times until the requirement is met. a) cellulose dehydrogenase Clean and disinfect surfaces that are touched often. b) Borrelia The section contains questions and answers on control fundamentals, physical agents, chemical agents characteristics, antimicrobial agents groups and antimicrobial chemical agents evaluation. A. Fecal occult blood B. The organism must be able to produce a high yield of product Clarification: Phenolphthalein has a pH range between 8.0 10.0. b) The organism must be able to produce a high yield of product. Which of the following method is not used in isolation and screening of desired microorganisms? 2. B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. 37) Which of the following is the selective media used for the cultivation and isolation of. 1215, 1216 137, 1217 Particles in a biological aerosol usually vary in size from <1 m to 50 m. Microbes like bacteria and many fungi can be grown on nutritive media to form colonies, that can be seen with naked eyes. Answer: C d) Lactobacillus acidophilus Prokaryotes are very flexible metabolically, so they are able to adjust their feeding to the available natural resources. Microorganisms Class 8 Science Chapter 2 as per NCERT Book used in CBSE and other Schools. In this process desired microorganism is generally isolated from a natural environment like soil, which . A) retards growth of Staphylococcus aureus. b) Rabies Secondary screening can give information about, (1) The genetic instability in microbial cultures, (2) Number of products produced in a single fermentation, 8. Fecal coliform bacteria are a subgroup of total coliform bacteria. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? Some examples of Spherical shaped bacteria include Staph aureus, Staph epidermidis, Staph haemolyticus, Strep pyrogenes, etc. Who was the first to observe animalcules under the microscope?