🦠 Microbiology Solved MCQs with Answers

Practice 1927 approved 🦠 Microbiology questions with verified answers from the 🧬 Medical Science subject for Pakistan exams.

1927 solved MCQs

The production of acetic acid from ethanol is anAnswer: Aerobic process Which of the following agents involve biosensors linking with electronic circuit?Answer: Microbially derived enzymes β-carotene is also known asAnswer: Provitamin A Vinegar is a fermentation derived food product containing not less thanAnswer: 4% acetic acid The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills isAnswer: 95% The strain C. glutamicum can be used for the production ofAnswer: All of these Which of the following is known for greater stability of the riboflavin producing capacity?Answer: Eremothecium ashbyii Species of the genus Streptomyces are known forAnswer: The production of antibiotics The organism used to produce L-glutamic acid isAnswer: All of these The species of Acetobacter which produces cellulosic strands to hold the cells in lime layer isAnswer: Acetobacter xylinum The commonly used media for submerged bacterial fermentation at commercial scale isAnswer: Beet molasses Which of the following microorganism produces only L(+) - lactic acid without further racemization ?Answer: Rhizopus oryzae The recovery of vitamin from fermentation broth is carried out prior toAnswer: Autolysis Naringinase, an enzyme commonly used for removal of bitter taste from citrus juice is obtained fromAnswer: A. niger Protease, which is used for flavouring of sake and haze removal in sake is produced byAnswer: A. oryzae The organism B. brevis can be used commercially for the production ofAnswer: All of these The early assay employed for measuring penicillin activity were based upon the quantity required to prevent growth of S. aureus overAnswer: 24 mm diameter zone using the cylinder plate method of assay Penicillin G is also known asAnswer: Benzyl penicillin A major organic acid produced by a microbial process used in foods isAnswer: Citric acid The concept of putting microbes to help clean up the environment is calledAnswer: Bioremediation Which of the following is not employed as an oxidation method?Answer: All of these The filtering medium of trickling filters is coated with microbial flora, known asAnswer: Zooglocal film Some cyanobacteria produce potent neurotoxins that, if ingested, will kill humans. These cyanobacteria are most likely to contaminateAnswer: Water rich in phosphate wastes but poor in organic carbon The biogas production process takes place at the temperatureAnswer: All of these Advanced treatment is generally used to treat waste water toAnswer: Remove additional objectionable substances Treatment of municipal water supplies is based uponAnswer: coagulation, filtration, chlorination What is an anaerobic digester?Answer: Method to convert agricultural waste into a biogas The use of microbes to break down synthetic waste products such as polychlorinated biphenyls is calledAnswer: Bioremediation Activated sludge contains large number ofAnswer: All of these Iron bacteria can produceAnswer: Both (a) and (b)