Category: CSIR NET Life Science Previous Year Questions and Solution on applied biology

Coliforms are used as indicator organisms of sewage pollution because they (1) are pathogens. (2) ferment lactose. (3) are abundant in human intestines. (4) grow within 24 hours. Correct answer: […]

Novel groups of polyketides can be synthesized in Actinomycetes by (1) gene rearrangement. (2) gene amplification. (3) combinatorial biosynthesis. (4) metabolic engineering. Correct answer: (3) combinatorial biosynthesis In Actinomycetes, novel […]

Which one of the following statements is NOT true for a continuous culture-based fermentation? (1) The exponential phase of growth is extended. (2) Nutrients are utilized efficiently and faster. (3) […]

Which one of the following is NOT typically a product of fermentation? (1) Cheese                   (2) Black tea (3) Kombucha        […]

During the production of alcohol by fermentation using budding yeast, oxygen supply is kept ‘limited. Why? (1) Budding yeasts are obligate anaerobes and cannot tolerate oxygen. (2) Budding yeasts lose […]

Which of the following microbial fermentations are anaerobic? (1) Ethanol and acetone-butanol. (2) Citric acid and propionic acid. (3) Penicillin and vitamin B12 (4) Streptomycin and rifampicin. Correct answer: (1) […]

Which one of the following statements CANNOT be included while defining the fermentation process? (1) Alcohol is formed from sugar residues (2) Requires an electron transport system. (3) Utilizes an […]

The word “fermentation” is used in biochemistry and Microbial technology to denote different phenomenon. If the former is called C and latter is called T. Which of the following statement […]