View Answer, 34. (3) It does not provide many ideas about the production or yield potential of microorganisms. d) Indicator dye technique B. b) The examination of the infection sites, c) They are prokaryotes in cellular organization. Mycoplasma pneumoniae is an unusual bacteria with distinctive colonies which are. You will get a gown or sheet as a cover. View Answer, 15. This quiz is designed to help you assess how well you have learned the content of this lesson. Detrimental effects of microorganisms in food include, Fermentation of grains usually results in production of, During malting, barley and other grains are broken down by, Milk fermentation to produce cheese is done initially by inoculating with, Pickles and sauerkraut share a common inoculum, which is. A. 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. c) hydrophobic barrier A 24 year old sexually active woman had an infection in the vaginal area with genital discharge while urinating. A 7 year old girl developed a sore throat and fever for 2 days. (1) It is useful in sorting microorganisms that have real commercial value. a) Cyanobacteria, Fungi and Viruses Clarification: The optimum temperature for the growth of an organism should be above 40C. B. 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. a) x-rays View Answer, 31. c) Enrichment Culture technique 10. A. Which of the following is the most accurate method for microbial assay of antibiotics? c) Chlorophycophyta Sugar fermentation test: Bacteria is grown in a sugar media. Primary methods to prevent food spoilage do NOT include 6. These particles may consist of a single, unattached organism or may occur in the form of clumps composed of a number of . C) new batches of microorganisms are screened for increased yield. a) Mesophile It gets its name from the Danish bacteriologist Hans Christian Gram who first introduced it in 1882, mainly to identify organisms causing pneumonia. These microorganisms have been often under-appreciated and under-studied. b) RNA polymerase c) nucleotides The production of substances in industrial microbiology occur in the sequence: a) Amphitrichous He came with a lesion on the lower part of the left leg that according to him first appeared about a week before visiting the hospital. b) Syphilis 9. Who was the first to observe animalcules under the microscope? The normal brown color of the feces is produced by: A. Cellulose B. Pancreatic enzyme C) alcohol. Which of the following gram positive bacteria is a strict anaerobe and can only grow in the absence of oxygen? 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. c) Enrichment Culture technique 13. b) Fermented dairy products (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. a) glycerol residues d) Lactobacillus acidophilus d) hydrophobic barrier and site of generation of protonmotive force Question 6. D) A and C . D. The organism must be able to grow in an easily available nutrient medium. 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. 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 . 5. 2011-2023 Sanfoundry. 16) A bacteriological stain also known as the differential stain is used for the identification of acid-fast organisms, Which of the following metabolic property differentiate the pink-colored colonies of. 13. 1. Clarification: The pH range of Bromophenol blue is 3.0 4.6. Engineering 2023 , FAQs Interview Questions. These extracellular enzymes break up the giant molecules of the substrate into smaller ones that can feed the microorganisms. a) The organism must be genetically stable. D. Indicator dye technique. Some of the frequently asked exam questions are as follows:-. Butanol is obtained by fermenting molasses by. The serial dilutions of soil are performed and spread on a Petri plate and allowed to grow. D. American Type Classifier and Collection. Secondary screening should yield the types of information which are needed in order to evaluate the true potential of a microorganisms industrially usage. Self-Assessment Quiz. 43) Which of the following methods are the most common and routine culture methods performed in the microbiology lab for the proper isolation and identification of bacteria and fungi? 3. Done in one or few steps. c) Phenolphthalein How do you isolate microorganisms from the soil? 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. Clarification: Hanging drop technique is used for motility testing of bacteria. Mycobacteria f"u001e MCQs IN MICROBIOLOGY 13. pH required for the growth of bacteria is 22. Which of the following plate is used to detect and isolate organic acid producers? Which of the following is NOT a criterion for the choice of an organism? uses 50 grams of glucose in a 500ml solution. Q. Vegetative bacteria are able to withstand adverse conditions better than protozoan cysts. Answer: A Answer: 1. View Answer, 14. c) Streptococcus thermophilus membranes of microorganisms. B) inhibit germination of botulism spores. Potato Dextrose Agar plate Diagram and name four mechanisms bacteria use to transport materials across the cytoplasmic membrane. Which among the following is a pathogenic algae for humans? Allow discarding of many valueless microbes. 4.0 SECONDARY SCREENING OF MICROORGANISMS . a) Edwin John Butler D. Indicator dye technique. d) The organism must be able to grow in an easily available nutrient medium. D. Indicator dye technique. (3) Attempt to synthesized secondary metabolites outside of their natural environment. b) vitamins Answer: D b) hydrophilic barrier 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. c) Binary fission 1. 9. What is required for proper isolation of microorganisms? 12. consent of Rice University. 10. (1) Its a process for the detection and isolation of microorganisms of our interest. View Answer, 32. 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. 7. a) Thiobacillus thiooxidans B) False, When in doubt, throw it out. 3.0 4.6 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. B) mass, controlled culture of microbes to synthesize products. Which of the following shows the zone of inhibition when a particular organism is grown on a Petri plate? A) heat below 100 oC. View Answer. [2][3] S. aureus is found in the . d) Study of microscope Crowded plate technique a) Condenser lens Yeast cells are good source of. are not subject to the Creative Commons license and may not be reproduced without the prior and express written A) retards growth of Staphylococcus aureus. a) Crowded plate technique d) intercalating agents a) Styloviridae 3. d) 5 percent a) Phenol red plate Our mission is to improve educational access and learning for everyone. A) True View Answer, 14. d) Multiple fission is affected by the patient's food intake on the day of testing. Which of the following method can be used to determine the number of bacteria quantitatively? b) Microbacteria View Answer, 8. For e.g., cellulose producers grow on nutrient medium supplied with cellulose. View Answer, 20. Which of the following foods is NOT made by fermentation? 6. For this dilution, it may be said that the solution was diluted _______ Which of the following are present in teichoic acids? A. Phenol red plate Which of the following method is used for the isolation of mutants? 5. Which scientist proposed adding a kingdom for protists? includes 6 urine samples. a) viral infection Phagocytosis is a critical part of the immune system. A) are among the most widely used preservatives. Phosphorus is essential component of __________ d) Prototheca coliform bacteria in drinking water, the source is probably environmental and fecal contamination is unlikely. B) heat. Which of the following method is useful for isolation and detection of organisms having the ability to produce growth factors? a) Watson c. confining long hair and loose clothing . Juli 2022 c) 2.5 to 4 percent Besides macroscopic plants and animals, microbes are the major components of biological systems on this earth. Which of the following yeast can be used to produce microbial protein? The microorganisms secrete the enzymes into their nutrient medium to make better use of it. This includes bacteria, archaea, viruses, fungi, prions, protozoa and algae, collectively known as 'microbes'. a) True Which of the following foods is NOT made by fermentation? 1. b) The organism must be able to produce a high yield of product. d) Corynebacterium diphtheriae a) cellulose dehydrogenase b) Monotrichous True. d) Lophotrichous Which of the following is NOT a domain in Woese and Foxs phylogenetic tree? 5. C. Phenolphthalein Clarification: The Crowded Plate Technique is used for the detection and isolation of the organisms which are antibiotic producers. View Answer. B. Auxanographic technique Pathogen testing is used to identify pathogenic organisms in manufacturing environments, ingredients or finished products that could harm the consumer. D) starch. c) magnetic fields The microbes play a major role in nutrient cycling, decomposition, food spoilage, control and cause of diseases and biotechnology. Lung infection was suspected, and a chest X-ray was performed which showed infection in both lungs. Clarification: The prototrophs are the organisms which are capable of synthesizing all the growth requirements by themselves whereas auxotroph is dependent on prototrophs. Candidiasis is a fungal infection, skin infection, and mouth or vaginal infection that can occur due to the overgrowth of the fungus. Microbiology MCQ. Which of the following is a prokaryotic microorganism? 6. a) chemical compounds 5. 5. D) removal of waste, inoculation, fermentation, downstream processing. Which of the following is used in electron microscope? A) True 2. Which of the following is a type of fungal microorganism? The section contains questions and answers on control fundamentals, physical agents, chemical agents characteristics, antimicrobial agents groups and antimicrobial chemical agents evaluation. b) Potato Dextrose Agar plate . You can practice these MCQs chapter by chapter starting from the 1st chapter or you can jump to any chapter of your choice. a) changes in the total population Protozoa that eat other organisms are known as _______________ d) Pasteur View Answer, 41. D) prevent mold. b) Corticoviridae 13. magic island poem tone Consult Now c) parasitic infection Secondary screening may be qualitative and quantitative in its approach. It doesn't include viruses and prions because they are classified as non-living. The bacterium Staphylococcus aureus is which type of bacteria? 3. Lipopolysaccharide in cell walls is characteristic of? 1. Which was the first disease for which a chemotherapeutic agent was used? 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. B. Which of the following is the standard resource for identifying bacteria? Identification of bacteria by biochemical tests. What does a viral DNA becomes after being associated with the bacterial chromosome? Which of the following method proceeds with 2-plate preparation? In an ecosystem, herbivores represent. b) Biological assay d) Phaeophycophyta Genetic engineering is also used to improve the biodegradation . Which of the following statement is correct regarding primary screening________. 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. answer choices. A. d) Mycoplasmas a) Final treatment c. Let the soil particles settle after shaking and then transfer 1ml of the solution into tube 2. 37) Which of the following is the selective media used for the cultivation and isolation of. 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.