The "flash method" or "high temperature short time" method exposes fluids to C) inoculation, fermentation, downstream processing, removal of waste. Microbes are certainly ideal for biotechnology. a) fats d) Lactobacillus acidophilus View Answer, 47. 8. This will help you to prepare for exams, contests, online tests, quizzes, viva-voce, interviews, and certifications. Which of the following types of microorganisms is photosynthetic? Place the gram of soil into the first tube with saline and SHAKE WELL. What is the approximate size of the bacterial cell? View Answer, 31. b) Rhodospirillum B. Auxanographic technique A test tube contains 9ml distilled water. Primary screening of organic acids or amines producing organisms is done by__________, (2) Dye such as neutral red or bromothymol blue is used. Has two nuclei C. Forms cysts D. Has a sucking disc E. Survives well in ordinary water, even when this is hot or contains chlorine or detergents, Flagellate parasite is the cause of vulvovaginitis in women in . The microorganisms secrete the enzymes into their nutrient medium to make better use of it. 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. c) Spirochetes Everything you need to know about water and wastewater microbiology. Which of the following statement is correct regarding primary screening________. B) False, Freezing at below -20 oC will kill most pathogenic food bacteria and inactivate toxins. b. not washing hands before and after lab . What is required for proper isolation of microorganisms? a) True Pathogen testing is continuously performed throughout the production . It changes from yellow at pH 3.0 to blue-violet at pH 4.6. B) False, Yeast cells prefer aerobic conditions to multiply in number. a) changes in the total population It is the organization which has the largest department of Research and Development. C) selecting microbial strains that lack a feedback system. b) hexokinase c) Psychrophile The organism must be genetically stable D. Indicator dye technique. Industrial microbiologists use "tricks" to increase the amount of chosen end product; this may include C) 72 oC for 15 seconds. 3. Genetic engineering is also used to improve the biodegradation . 8. Our 1000+ MCQs focus on all topics of the Microbiology subject, covering 100+ topics. A. b) Fermented dairy products d) mitochondrial membrane 5. b) Ferdinand Cohn d) Indicator dye technique The section contains MCQs on selective methods, pure cultures and cultural characteristics. c) cytoplasm B) mass, controlled culture of microbes to synthesize products. Which of the following enzyme removes the RNA primer with its 5-nuclease activity? 13. Which of the following dye is colourless at acidic pH and becomes red at basic pH? Q. Bacterial endospores are more resistant to antimicrobial control methods than all other microbial forms. d) Gram-positive bacteria The section contains multiple choice questions and answers on viruses, vaccination, structure, composition, viruses classification, virus infection and fatal diseases. Question 6. A. Phenol red plate In this process desired microorganism is generally isolated from a natural environment like soil, which . 8.0 10.0 Some strains, however, can cause illness. d) proteins View Answer, 49. D) are harvested during the exponential phase of growth. 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. d) Pasteur D) all of the above. (4) It separates out only a few microorganisms, only a few have commercial value while discards the valueless microorganisms, 14. Complex media are prepared using digests of microbial, animal, or . 11. c. confining long hair and loose clothing . What is required for proper isolation of microorganisms? Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. Potato Dextrose Agar plate It should have a fast rate of kill of micro-organisms. d) appendaged bacteria 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. (1) Microbial isolation technique is an attempt to grow microorganisms outside of their natural environment. Clarification: The Antibiotic producers show the zone of inhibition. c) Lactobacilli A) heat below 100 oC. Engineering 2023 , FAQs Interview Questions. Adenoviruses cause _________a) Respiratory infectionsb) Gastric problemsc) Intestinal perforationd) Heart attackAnswer: a D. Amino acid producers. 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Which of the following foods is NOT made by fermentation? b) Streptomyces olivaceus Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella pneumoniae. b) Syphilis b) an increase in number of cells D) starch. d) gene Multiple Choice. C) are products that require additional processing before they can be packaged. b) False 13. Butanol is obtained by fermenting molasses by. a) Treponema 5. 25. a)Microaerophilic. There are various microorganisms types like bacteria, fungi, archaea, or protists. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . Symptoms include cough and lung infection. A) True A) are essential to microbe function. 2011-2023 Sanfoundry. Except where otherwise noted, textbooks on this site You will lie on your back on an exam table, with your feet in stirrups. A) True 31) Name the bacteria of the Enterobacteriaceae family that have the following characteristics? However, if environmental contamination can enter the system, pathogens could get in too. Viral hemagglutination assays only work with certain types of viruses because. It is used to reduce the dense culture of cells to usable concentration. Answer: B d) cellulase It will immensely help anyone trying to crack an exam or an interview. Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. c) hydrophobic barrier Which of the following metabolic characteristic is a distinguishing characteristic and identification of colonies of. Includes common viruses, bacteria, and parasites 1,2: Stool sample: Sensitive, certain positive results may be unrelated to active infection. Which among the following is a pathogenic algae for humans? It doesn't include viruses and prions because they are classified as non-living. a) Rod-shaped b) Comma shaped c) Spiral shaped d) Spherical shaped Answer: a Clarification: The following diagram represents rod-shaped bacteria, magnified 1500X. Prokaryotes are very flexible metabolically, so they are able to adjust their feeding to the available natural resources. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. 1. D) 134 oC for 1 second. c) Organic acid producers The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. Which of the following media is used for screening amylase? b) light waves B. 1. b) Streptococcus lactis Crowded plate technique is used for screening of____________. Acridine orange is which type of mutagen? View Answer, 4. Trophic level in an ecosystem represents. a) The organism must be genetically stable. b) Monotrichous Microbes can live in highly acidic as well as an alkaline medium. d) 2 micrometer in diameter You can also prevent infections through: Hand-washing. Bacterial cells grown in a medium exposed to high osmotic pressure, changes shape from rod-shaped to __________ shaped. b) cellulose False. 3. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. The bacterial cell then elongates and splits into two daughter cells each with identical DNA to the parent cell. Entrepreneurship Development MCQ with Answers, MHT CET Chapterwise Questions Pdf free Download. MCQ.9):Which bacteria have flagella of amphitrichous type means the flagellum are present at both the sides? View Answer, 35. a) S mallpox A sputum sample was taken for the lab diagnosis for the isolation and identification of the microorganism. For e.g., cellulose producers grow on nutrient medium supplied with cellulose. d) Study of microscope a) Eremothecium ashbyi As primary screening allows the detection and isolation of microorganisms which posses, potentially interesting industrial applications. Which of the following method proceeds with 2-plate preparation? B) False, Pasteurization is used to sterilize milk. D) all of the above. c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. c) Cyanobacteria c) base analog Required fields are marked *. d) Nitrosovibrio tenuis View Answer, 12. 5. d) Rose Bengal Agar plate a) True Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. b) Killing pathogenic microorganisms c) Killing spores d) None of these answer-A 3. Which of the following is NOT a criterion for the choice of an organism? Microbiology is the study of living organisms that are not visible to the naked eyes. B. Auxanographic technique True 7. (2) Attempt to kill microorganisms outside of their natural environment. 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. Who is considered the father of Western medicine? MCQ on Industrial Microbiology. 10. It works best in this range and is also used as a tracking dye in Agarose-Gel Electrophoresis. C. The optimum temperature for the growth of an organism must be above 50C c) beta-glucosidase Several microbes are useful to humans in diverse ways like in household products, industrial products, agricultural products, etc. Microorganism Definition. b) 8.0 10.0 Glycosylated hemoglobin: causes sickle cell anemia. A. c) nucleotides b) Microbacteria b) irregular d) The organism must be able to grow in an easily available nutrient medium Identification of bacteria by biochemical tests. d) both aerobic and anaerobic cells b) Auxanographic technique a) phospholipids View Answer, 13. 1. 45) What are the types of general characteristics that are important for the identification and classification of protozoa? Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? a) Growth Factor producers View Answer, 2. Who is known as the father of Microbiology? View Answer, 28. Which of the following method can be used to determine the number of bacteria quantitatively? Some examples of rod-shaped bacteria include Lactobacillus, Morganella, Bacillus anthracis, Klebsiella . Which of the following types of mutants can be isolated using the replica plate technique? 15. View Answer, 43. a) electron beams and magnetic fields 3. The section contains questions and answers on energy utilization in biosynthetic and nonbiosynthetic processes, transcription and translation of genetic information and protein synthesis process. The 1st plate is used to isolate and detect prototrophs whereas 2nd plate is used for identification of auxotrophs. C) new batches of microorganisms are screened for increased yield. c) Study of organisms that are not visible to naked eyes Official Website of Dr. Shyama Prasad Mukherjee University, Ranchi . 5. 4. a) plasmid Answer: D 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. B) inoculation, downstream processing, fermentation, removal of waste. Which of the following is a correct usage of binomial nomenclature? c) MacConkeys Agar plate b) below 1 percent Through primary screening only few or many microorganism that produce a industrially . View Answer, 11. A BV test is done in a similar way as a pelvic exam or Pap smear. 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