A:-Pasteurization
B:-Canning
C:-Cold sterilization
D:-None of the above
B:-Canning
C:-Cold sterilization
D:-None of the above
Correct Answer:- Option-A
2:-Which of the following is not used for disinfection of water?
A:-Chlorine
B:-Ultra violet rays
C:-Ozone
D:-Mercuric chloride
B:-Ultra violet rays
C:-Ozone
D:-Mercuric chloride
Correct Answer:- Option-D
3:-Botulinum toxin acts by which of the following mechanism?
A:-Exerts its effects on the cyclic AMP system
B:-Causes lysis of RBC's
C:-Blocks the release of acetylcholine, at the neuromuscular junction
D:-Transfer of ADP-ribose to elongation factor-2, inhibiting protein synthesis
B:-Causes lysis of RBC's
C:-Blocks the release of acetylcholine, at the neuromuscular junction
D:-Transfer of ADP-ribose to elongation factor-2, inhibiting protein synthesis
Correct Answer:- Option-C
4:-Which of the following is considered to be the optimum temperature range for the growth of psychrophiles?
A:-20-37°C
B:-80-110°C
C:-45-65°C
D:-0-15°C
B:-80-110°C
C:-45-65°C
D:-0-15°C
Correct Answer:- Option-D
5:-Which of the following is not used for the cultivation of viruses?
A:-Cell cultures
B:-Blood agar
C:-Animals
D:-Embryonated eggs
B:-Blood agar
C:-Animals
D:-Embryonated eggs
Correct Answer:- Option-B
6:-Azotobacter is
A:-a plant pathogenic bacteria
B:-used for production of acetic acid
C:-free living bacteria which can fix nitrogen
D:-none of the above
B:-used for production of acetic acid
C:-free living bacteria which can fix nitrogen
D:-none of the above
Correct Answer:- Option-C
7:-Secondary metabolites are produced during which phase of growth cycle of a microbe?
A:-Log phase
B:-Stationary phase
C:-Lag phase
D:-None of the above
B:-Stationary phase
C:-Lag phase
D:-None of the above
Correct Answer:- Option-B
8:-The term 12D treatment refers to which of the following processes?
A:-Process which destroys psychrophilic bacteria
B:-Heat treatment sufficient to kill 12 bacteria
C:-12 different treatments used to preserve food
D:-a `10^(12)` reduction in C. botulinum endospores
B:-Heat treatment sufficient to kill 12 bacteria
C:-12 different treatments used to preserve food
D:-a `10^(12)` reduction in C. botulinum endospores
Correct Answer:- Option-D
9:-Which one of the following reactions is considered to be undesirable in the process of wine-making?
A:-Conversion of glucose to pyruvic acid
B:-Conversion of ethanol to acetic acid
C:-Conversion of sucrose to ethanol
D:-All of the above
B:-Conversion of ethanol to acetic acid
C:-Conversion of sucrose to ethanol
D:-All of the above
Correct Answer:- Option-B
10:-You have isolated a non-motile gram-positive cell with no visible nucleus. This cell will definitely posses which of the following?
A:-Ribosome
B:-Lysosome
C:-Mitochondria
D:-Golgi complex
B:-Lysosome
C:-Mitochondria
D:-Golgi complex
Correct Answer:- Option-A
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