21
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
Answer & Solution
Answer: Option
B
22
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
Answer & Solution
Answer: Option
C
23
A biological process is involved in the . . . . . . . . treatment of industrial effluent.
A)
Primary
B)
Secondary
C)
Tertiary
D)
Quaternary
Answer & Solution
Answer: Option
B
24
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
Answer & Solution
Answer: Option
B
25
Ethanol concentration is lowest in
A)
Wine
B)
Beer
C)
Brandy
D)
Rum
Answer & Solution
Answer: Option
B
26
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
Answer & Solution
Answer: Option
D
27
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
Answer & Solution
Answer: Option
C
28
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
Answer & Solution
Answer: Option
A
29
Enzyme papain is used with success to
A)
Increase meat produ
B)
Leaven bread
C)
Ripen papaya fruit
D)
Tenderize meat
Answer & Solution
Answer: Option
D
30
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
Answer & Solution
Answer: Option
C
