Microbial Biotechnology MCQs

Microbes bring about biological transformation of xenobiotic compounds by

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

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

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

A biological process is involved in the . . . . . . . . treatment of industrial effluent.

Which one of the following bioreactor configurations is the basis for a trickling biological filter?

Ethanol concentration is lowest in

The selection of the appropriate purification method in the product recovery after microbial fermentation depends on the

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