CSIR NET Life Science Previous Year Questions on applied biology Archives - Page 17 of 19 - CSIR NET LIFE SCIENCE COACHING | NTA NET LIFE SCIENCE

23. If we want to obtain glycosylated protein from microbe, suitable choice will be (1) Bacteria (2) Yeast (3) Mycoplasma (4) Animal cell

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

Best microbial system for glycosylated protein production

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November 28, 2025
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If we want to obtain glycosylated protein from microbe, suitable choice will be (1) Bacteria (2) Yeast (3) Mycoplasma […]

22. Microbes produce either primary or secondary metabolites during fermentation. A metabolite production curve is shown below: The following statements refer to the above figure: (A) A primary metabolite has a production curve that lags behind the line showing cell growth. (B) A primary metabolite is produced after the Trophophase is completed. (C) A secondary metabolite is produced mainly during Idiophase. (D) The curve shows the production of Penicillin from mold. Which of the above statements are correct? (1) A and B (2) C and D (3) A and C (4) B and D

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

Primary vs secondary metabolite production curve in fermentation

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November 28, 2025
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Microbes produce either primary or secondary metabolites during fermentation. A metabolite production curve is shown below: The following statements refer to the above figure: (A) A primary metabolite has a […]

21. Which of the following curve correctly represents the antibiotic production by Streptomyces species?

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

Correct curve for antibiotic production by Streptomyces species

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November 28, 2025
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Which of the following curve correctly represents the antibiotic production by Streptomyces species? Concept: Streptomyces antibiotics as secondary metabolites Streptomyces species are classic producers of secondary metabolites, including many clinically […]

20. Which of the following curves correctly represents the process of ethanol production by yeast?

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

Correct curve for ethanol production by yeast in batch fermentation

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November 28, 2025
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Which of the following curves correctly represents the process of ethanol production by yeast? Concept: ethanol fermentation kinetics In batch fermentation, Saccharomyces cerevisiae first grows using available sugar, causing a […]

19. Column A lists a set of nutrients and Column B lists some sources for these nutrients that are used in industrial fermentation. Choose the option that matches the nutrient with its most common source. (1) A: (i), (ii); B :(iii), (iv); C: (v) (2) A: (i), (v); B: (iii), (iv); C: (ii) (3) A: (ii), (v); B: (iii), (iv); C: (i) (4) A: (v); B: (i), (iii); C: (ii), (iv)

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

Industrial fermentation nutrients

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November 28, 2025
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Column A lists a set of nutrients and Column B lists some sources for these nutrients that are used in industrial fermentation. Choose the option that matches the nutrient with […]

18. Which one of the following microorganisms is used for the fermentation of coffee beans? (1) Candida krusei (2) Erwinia dissolvens (3) Lactobacillus delbrueckii (4) Lactobacillus plantarum

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

Why Candida krusei Is Widely Used in Coffee Bean Fermentation

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November 28, 2025
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Which one of the following microorganisms is used for the fermentation of coffee beans? (1) Candida krusei (2) Erwinia dissolvens (3) Lactobacillus delbrueckii (4) Lactobacillus plantarum Correct answer: (1) Candida […]

17. The following table lists some of the enzymes of fungi and bacteria having wide variety of industrial applications, including alcoholic beverages, food, detergents and pharmaceuticals, along with their microbial original Enzyme Microorganism A. Amylase E. Azotobacter vinelandii B. Asparginase F. Serratia marcescens C. Lipase G. Aspergillus aureus D. Pectinase H. Aspergillus oryzae The correct combinations are (1) A and H (2) B and G (3) C and E (4) D and F

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

Industrial Enzymes and Their Microbial Sources

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November 28, 2025
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The following table lists some of the enzymes of fungi and bacteria having wide variety of industrial applications, including alcoholic beverages, food, detergents and pharmaceuticals, along with their microbial original […]

16. Industrial products in which bacteria are employed for production are shown in the following table: The correct combinations are (1) A - iii; B - i; C - ii; D - iv (2) A - i; B - ii; C - iii; D - iv (3) A - iii; B - ii; C - iv; D - i (4) A - ii; B - iii; C - iv; D – i

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

Industrial Products and Their Bacterial Producers

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November 28, 2025
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Industrial products in which bacteria are employed for production are shown in the following table: The correct combinations are (1) A – iii; B – i; C – ii; D […]

15. Electrons are transferred from reduced co-enzymes like NADH, NADPH to pyruvic acid its derivatives during fermentation. Those final electron acceptors are reduced to the end-product for example latic acid, propionic acid, etc. end products depend on the particular microorganism and the substrate The correct match is (1) A - a, B - b, C - c, D – d (2) A - d, B - c, C - a, D – c (3) A - b, B - c, C - d, D – a (4) A - c, B - d, C - a, D – b

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

Fermentation End Products of Streptococcus, Clostridium, Salmonella and Enterobacter

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November 28, 2025
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Electrons are transferred from reduced co-enzymes like NADH, NADPH to pyruvic acid its derivatives during fermentation. Those final electron acceptors are reduced to the end-product for example latic acid, propionic […]