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 […]
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Correct curve for ethanol production by yeast in batch fermentation
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 […]
Industrial fermentation nutrients
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 […]
Why Candida krusei Is Widely Used in Coffee Bean Fermentation
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 […]
Industrial Enzymes and Their Microbial Sources
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 […]
Industrial Products and Their Bacterial Producers
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 […]
Fermentation End Products of Streptococcus, Clostridium, Salmonella and Enterobacter
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 […]
Resveratrol in Red Wine and Grapes as a Natural Anti-Tumour Agent
Red wine and Red grapes are important source of which anti-tumour agent? (1) Taxol […]
The Primary Fungus Used for Commercial Citric Acid Production
Fungus used for commercial production of citric acid is- (1) Neurospora (2) Penicillium (3) Aspergillus (4) Saccharomyces Correct answer: (3) Aspergillus Why […]
Streptomyces: The Major Microbial Source of Antibiotics
Among the following which is source of maximum antibiotics- (1) Streptomyces (2) Penicillin (3) Actinomyces (4) Bacillus Correct answer: (1) […]


