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
A. P-1, Q-2, R-4, S-3
B. P-2, Q-1, R-3, S-4
C. P-1, Q-2, R-3, S-4
D. P-3, Q-4, R-2, S-1
Select an option to see the answer and solution.
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. P-2, Q-1, R-3, S-4
B. P-1, Q-3, R-4, S-2
C. P-2, Q-3, R-1, S-4
D. P-3, Q-2, R-4, S-1
Select an option to see the answer and solution.
A biological process is involved in the . . . . . . . . treatment of industrial effluent.
A. Primary
B. Secondary
C. Tertiary
D. Quaternary
Select an option to see the answer and solution.
Which one of the following bioreactor configurations is the basis for a trickling biological filter?
A. Stirred tank
B. Packed bed
C. Air lift
D. Fluidized bed
Select an option to see the answer and solution.
Ethanol concentration is lowest in
A. Wine
B. Beer
C. Brandy
D. Rum
Select an option to see the answer and solution.
The selection of the appropriate purification method in the product recovery after microbial fermentation depends on the
A. Nature and the stability of the end products produced
B. Type of the side products present
C. Degree of purification required
D. All of the above
Select an option to see the answer and solution.
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
A. P-4, Q-3, R-2, S-1
B. P-3, Q-4, R-1, S-2
C. P-4, Q-3, R-1, S-2
D. P-1, Q-4, R-3, S-2
Select an option to see the answer and solution.
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
A. P-2, Q-4, R-1, S-3
B. P-3, Q-4, R-1, S-2
C. P-4, Q-1, R-2, S-3
D. P-1, Q-3, R-4, S-2
Select an option to see the answer and solution.
Enzyme papain is used with success to
A. Increase meat produ
B. Leaven bread
C. Ripen papaya fruit
D. Tenderize meat
Select an option to see the answer and solution.
Which of the following is not true of aerobic digestion?
A. It generates most sludge
B. It generally incurs higher running cost
C. It may generate a usable fuel
D. It requires a shorter residence time
Select an option to see the answer and solution.
Which one of the following options related to the following statements is incorrect?
A. Use relatively simple techniques
B. Generally end up with hazardous waste material
C. Are relatively slow
D. Are unobtrusive and non-disruptive
Select an option to see the answer and solution.
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
A. P-4, Q-1, R-2, S-3
B. P-1, Q-4, R-2, S-3
C. P-2, Q-3, R-1, S-4
D. P-3, Q-4, R-2, S-1
Select an option to see the answer and solution.
A bacterial culture (200 μL containing 1.8 × 109 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.9 cells. This experiment showed that the antibiotic Z is
A. Bacteriostatic
B. Bacteriocidal
C. Bacteriolytic
D. Apoptotic
Select an option to see the answer and solution.
A bioremedial solution to reduce oxides of nitrogen and carbon in flue gases is to integrate flue gas emission to
A. Microalgal culture
B. Fish culture
C. Mushroom culture
D. Sericulture
Select an option to see the answer and solution.
