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7. The Biotin content in media for Lysine production shopuld be above;, a) 20%, b) 60%, c) 30%, d) 10%, 8. Chemically Penicillin has a basic stucture of;, a) 6APA, b) 2APA, c) 7APA, d) 9APA, 9. Penicillin and Lysine share a common branched biosynthetic pathway from;, a) Aspartate, b) Aspartyl phosphate, c) Amino adipic acid, d) 6APA, 10. Biotin’inositol and pantothinol are contents of, a) CSL, b) Molasses, c) Starch, d) Sugars, 11. Alcohol fermentation theory based on theorotical basis is;, a) EMP pathway, b) Neuberg theory, c) Darwin theory, d) PPPathway, 12. The molecular formulae for citric acid is ;, a) C6H8O7, b) C8H2O8, c) H6C8O7, d) C2H4O6, 13. Which of the following vitamins is also known as cobalamin?, (a) Vitamin B11, (b) Vitamin B2, (c) Vitamin B6, (d) Vitamin B12, 14. Which of the following is not used as a bio-fertiliser?, a) Bacteria, b) Algae, c) Cyanobacteria, d) Fungi, 15. Which of the following bacteria cannot fix atmospheric nitrogen?, a) Nostoc

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b) Anabaena, c) Oscillatoria, d) Lactobacillus, 16.The large holes in the cheese are due to ______________, a) Oxygen production, b) Carbon dioxide production, c) Sulfur dioxide release, d) Lead dioxide release, 17.Rennet is _______________, a) The hard cheese, b) The complex set of enzymes, c) The soft cheese, d) The semi-hard cheese, 18.Which of the following algae can be grown on wastewater?, a) Spirogyra, b) Volvox, c) Spirulina, d) Chlamydomonas, 19.Which of the following is the most common source of SCP?, a) Multicellular yeast, b) Single-celled yeast, c) Unicellular algae, d) Unicellular bacteria, 20. Which of the following is used as a biocontrol agent against caterpillars of, butterflies?, (a) Trichoderma, (b) Streptococcus, (c) Bacillus Thuringiensis, (d) Saccharomyces cerevisiae, 21.The process of using a natural predator to control a pathogen is called, (a) genetic engineering, (b) biological control, (c) confusion technique, (d) artificial control, 22.Which of the following is the most widely used vaccine for the prevention of, poliomyelitis?, a) OPV, b) MMR, c) COD, d) POR, 23.. Which of the following is an aerobic nitrogen-fixing bacterium?, a) Azotobacter, b) Clostridium

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c) Rhodospirillum, d) Rhodopseudomonas, 24. Which of the following is not an organic matter on which microorganisms are, raised for SCP?, a) Sawdust, b) Paddy straw, c) Acids, d) Whey, 25.The conversion of pyruvate to acetyl CoA is known as, a) Oxidative decarboxylation, b) Oxidative phosphorylation, c) Reductive biosynthesis, d) Reductive decarboxylation