Which of the following provides a protective effect to animal cells?
Anonymous Quiz
0%
Hepes
39%
Pluronic F-28
43%
?-mercaptoethanol
18%
Albumin
Which of the following is an advantage of serum-free protein media?
Anonymous Quiz
19%
Simple upstream processing
38%
Undefined media composition
35%
Simple downstream processing
8%
Costly
The role of the fermentation media is to provide a high amount of nutrients and optimum conditions for the growth of microorganisms.
Anonymous Quiz
81%
True
19%
False
Which of the following is downstream processing?
Anonymous Quiz
13%
Cell breakdown
34%
Media formulation
44%
Product recovery
9%
Product formation
❤1
Which of the following is not a type of sterilization?
Anonymous Quiz
8%
Batch
31%
Continuous
41%
Filter
21%
Submerged
How long does it take for the autoclave to complete its cycle?
Anonymous Quiz
25%
30-35 minutes
50%
50 min to 1 hr
19%
15-20 minutes
6%
10-15 minutes
The sterilization in double spiral heat exchanger is done through ___________
Anonymous Quiz
45%
Countercurrent mechanism
35%
Counter mechanism
13%
Symporter mechanism
6%
Antiporter mechanism
Which of the following is the most preferable frequency for ultrasonic sterilization?
Anonymous Quiz
30%
500 kHz
37%
300 kHz
27%
600 kHz
7%
400 kHz
Which of the following is not the property of Chromium film?
Anonymous Quiz
25%
Non-porous
25%
Soluble
46%
Self-healing
4%
Continuous
The AISI grade 316 contains _______ amount of chromium.
Anonymous Quiz
10%
15 %
57%
18 %
24%
20 %
10%
18.5 %
The AISI grade 317 contains ________ amount of molybdenum.
Anonymous Quiz
13%
5 – 10 %
61%
3 – 5 %
13%
1 – 2 %
13%
11 – 14 %
The purpose of aeration is to provide ___________
Anonymous Quiz
16%
The medium to organisms
32%
The carbon dioxide to organisms
52%
The oxygen to organisms
0%
The water to organisms
Which of the following is not the component of aeration and agitation system?
Anonymous Quiz
28%
Impeller
22%
Baffles
33%
Stirrer gland and bearing
17%
Thermometer
Which of the following agitator consists of blades directly attached to a boss on agitator shaft?
Anonymous Quiz
28%
vaned discs
6%
disc turbines
39%
rectangular turbines
28%
marine propeller
Which of the following sparger is made of ceramic or metals?
Anonymous Quiz
19%
Porous sparger
33%
Orifice sparger
14%
Nozzle sparger
33%
Combined sparger-agitator
Who developed the combined-agitator sparger?
Anonymous Quiz
40%
Herbert
35%
Rivett
25%
Johnson
0%
Peterson
What led to the development of Walhof-type fermenter?
Anonymous Quiz
30%
Yeast growth
60%
Bacterial growth
0%
Viral growth
10%
Fungi growth
The diameter of Waldhof-type fermenter was _______
Anonymous Quiz
45%
8.0 m
30%
7.8 m
20%
7.9 m
5%
8.1 m
The tower beer fermenter was patented by _________
Anonymous Quiz
25%
Shore
40%
Ulenberg
30%
Owen
5%
Victerero
❤1