Microbial Biotechnology MCQs with Explanations

Phenylacetic acid is the correct answer to “The precursor for penicillin-G biosynthesis during fermentation process is”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Saccharomyces cerevisiae is the correct answer to “Which of the following eukaryotic organisms has been proven to be of great industrial importance”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

They form epoxides in presence of oxygen is the correct answer to “Oils rich in PUFA are not desirable for biodiesel production because”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-3, Q-1, R-4, S-2 is the correct answer to “Match the products in Group I with their ppossible applications in Group II . Group I Group II P. Erythropoietin 1. Blood clot Q. Anti-fibrin 99 2. Binding and transport of iron R. Collagenase 3. Anaemia S. S. Transferrin 4. Animal cell separation”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-1, Q-2, R-3, S-4 is the correct answer to “Match the recombinant products in Group I with their therapeutic applications in Group II . Group I Group II P. Human growth hormone 1. Pituitary dwarfism Q. Platelet growth factor 2. Chemotherapy induced thrombocytopenia R. Factor VIII 3. Hemophilia S. Erythropoietin 4. Anemia associated with chronic renal failure”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Lysine stimulates penicillin synthesis is the correct answer to “Identify the statement that is not correct”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

30 and 20 is the correct answer to “Examine the data given below in the table on purification of a protein X. Step Volume (mL) Protein Concentration (mg mL -1) Enzyme Activity (unit mL -1 ) Crude cell-free extract 500 12.0 5.0 Ammonium sulfate precipitation 125 3.0 11.0 Ion-exchange chromatography 10 9.0 75.0 The yield percent and purification factor, respectively, at the end of the experiment will be approximately”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-3, Q-4, R-2, S-1 is the correct answer to “Match the activity spectrum of the following antibiotics. Group I Group II P. Actinomycin D 1. Antifungal Q. Daunorubicin 2. Antituberculosis R. Rifamycin 3. Antitumor S. Griseofulvin 4. Antiprotozoal”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Both (A) and (R) are correct and (R) is the correct reason for (A) is the correct answer to “Determine the correctness or otherwise of the following Assertion (A) and Reason (R) . Assertion: Cell mass yield of a methylotrophic yeast is more on methanol compared to glucose. Reason: Methanol has a greater degree of reductance compared to glucose.”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-2, Q-3, R-4, S-1 is the correct answer to “Match the products in Group I with their producer organisms given in Group II . Group I Group II P. Ethanol 1. Streptomyces orientalis Q. L-Lysine 2. Saccharomyces cerevisiae R. Biopesticide 3. Corynebacterium glutanicum S. Vancomycin 4. Bacillus thuringiensis”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Nitrogen and phosphorus is the correct answer to “Which of the following essential element(s) is/are required as major supplement to enhance the bioremediation of oil spills by the resident bacteria”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-1, Q-3, R-2, S-4 is the correct answer to “Match the industrial application of the following enzymes. Group I Group II P. Penicillinase 1. Pharmaceutical Q. Pectinase 2. Leather R. Trypsin 3. Wine S. Rennin 4. Dairy”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-3, Q-1, R-4, S-2 is the correct answer to “Match the commercial microbial sources in Group I with the products in Group II . Group I Group II P. Corynebacterium lilium 1. 2, 3-Butane di-ol Q. Klebsiella oxytoca 2. Poly-β-hydroxybutyric acid R. Aspergillus niger 3. Glutamic acid S. Alcaligenes eutrophus 4. Citric acid”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-1, Q-3, R-2, S-4 is the correct answer to “Match enzymes in Group I with their corresponding industrial application in Group II . Group I Group II P. Amylase 1. Laundry detergent Q. Invertase 2. Fruit juice clarification R. Pectinase 3. Liquefaction of sucrose S. Xylanase 4. Pulp and paper processing”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Growth and production phase is the correct answer to “In secondary metabolism, two distinct phases - trophophase and idiophase refer, respectively, to”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-2, Q-3, R-1, S-4 is the correct answer to “The two columns given below indicate some of the fermentation products and the microbial cultures used for their production. Identify the correct set of groups from the four options. Fermentation products Microbial cultures P. Ethanol 1. Aspergillus niger Q. Streptomycin 2. Zymomonas mobilis R. Citric acid 3. Streptomyces griseus S. Cellulase 4. Trichoderma reesei”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-3, Q-1, R-4, S-2 is the correct answer to “Match the following marker genes in Group I with suitable selecting agent in Group II . Group I Group II P. nptII 1. Glyphosate Q. aroA 2. Phosphinothricin R. hpt 3. Kanamycin S. bar 4. Hygromycin B”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

All of the above is the correct answer to “Microbes bring about biological transformation of xenobiotic compounds by”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-3, Q-4, R-1, S-2 is the correct answer to “Match the products in Group I with their producer organisms in Group II . Group I Group II P. Ethanol from glucose 1. Aspergillus niger Q. Probiotics 2. Leuconostoc mesenteroides R. Citric acid 3. Saccharomyces cerevisiae S. Sauerkraut 4. Bifidobacterium”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-2, Q-1, R-3, S-4 is the correct answer to “Identify the following antibiotics with their modes of action. Group I (Antibiotic) Group II (Mode of action) P. Ampicillin 1. Inhibition of protein synthesis Q. Tetracycline 2. Inhibition of cell wall synthesis R. Nystatin 3. Damage to cytoplasmic membrane S. Anthramycin 4. Damage to DNA structure”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-2, Q-3, R-1, S-4 is the correct answer to “Match the products in Group I with the microbial cultures in Group II used with their industrial production. Group I Group II P. Gluconic acid 1. Leuconostoc mesenteroides Q. L-Lysine 2. Aspergillus niger R. Dextran 3. Brevibacterium flavum S. Cellulase 4. Trichoderma reesei”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Secondary is the correct answer to “A biological process is involved in the . . . . . . . . treatment of industrial effluent.”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Packed bed is the correct answer to “Which one of the following bioreactor configurations is the basis for a trickling biological filter”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Beer is the correct answer to “Ethanol concentration is lowest in”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

All of the above is the correct answer to “The selection of the appropriate purification method in the product recovery after microbial fermentation depends on the”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-4, Q-3, R-1, S-2 is the correct answer to “Match items in Group I with correct examples from those in Group II . Group I Group II P. Catabolic product 1. Griseofulvin Q. Bioconversion 2. Baker's yeast R. Biosynthetic product 3. 6-Aminopenicillanic acid S. Cell mass 4. Ethanol”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-2, Q-4, R-1, S-3 is the correct answer to “Match the items in Group I with the terms given in Group II . Group I Group II P. Lactobacillus and Bifidobacteria 1. Prebiotics Q. Polychlorobenzenes (PCBs) 2. Probiotics R. Fructo-oligosaccharides 3. Antibiotics S. β-Lactams 4. Xenobiotics”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Tenderize meat is the correct answer to “Enzyme papain is used with success to”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

It may generate a usable fuel is the correct answer to “Which of the following is not true of aerobic digestion”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Generally end up with hazardous waste material is the correct answer to “Which one of the following options related to the following statements is incorrect? In comparison to physical/chemical methods of clean up, bioremediation methods”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

P-4, Q-1, R-2, S-3 is the correct answer to “Match the following products with their starting substrates. Group I Group II P. Sake 1. Apple juice Q. Cider 2. Grape juice c. Wine 3. Barley d. Lager 4. Rice”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Bacteriostatic is the correct answer to “A bacterial culture (200 μL containing 1.8 × 10 9 cells) was treated with an antibiotic Z (50 μg per mL) for 4 h at 37°C. After this treatment, the culture was divided into two equal aliquots. Set A: 100 μL was plated on Luria agar. Set B: 100 μL was centrifuged, the cell pellet washed and plated on Luria agar. After incubating these two plates for 24 h at 37°C, Set A plate showed no colonies, whereas the Set B plate showed 0.9 × 10 9 cells. This experiment showed that the antibiotic Z is”. This question is standard in competitive examination syllabi for Microbial Biotechnology.

Microalgal culture is the correct answer to “A bioremedial solution to reduce oxides of nitrogen and carbon in flue gases is to integrate flue gas emission to”. This question is standard in competitive examination syllabi for Microbial Biotechnology.