Q. What may cause foaming in a bioreactor?

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Q. How does impeller speed affect bubble size?

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Q. In a chemostat operating under steady state, a bacterial culture can be grown at dilution rate higher than the maximum growth rate by _________

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Q. What are antibiotics?

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Q. Who discovered the first antibiotic?

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Q. How many antibiotics have still been isolated?

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Q. Antibiotics are mainly produced by _________

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Q. How inoculum is prepared in the production of antibiotics?

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Q. Penicillin is active against ____________

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Q. Penicillin inhibits cell wall synthesis.

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Q. Penicillium chrysogenum produce penicillin.

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Q. What is the precursor of penicillin?

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Q. pH required for the production of penicillin will be ______________

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Q. The doubling time of Penicillium notatum is ___________

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Q. How is penicillin stored?

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Q. Streptomycin is _____ antibiotic.

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Q. How is streptomycin recovered?

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Q. pH range required for streptomycin production is __________

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Q. Why are Enzymes active only over small range of pH?

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Q. What is the suitable form of ionic group of enzymes?

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