menu
GO BioTechnology
Recent questions in Bioprocess Engineering and Process Biotechnology
Login
Register
My account
Edit my Profile
Private messages
My favorites
Register
Recent questions in Bioprocess Engineering and Process Biotechnology
All Activity
Questions
Unanswered
Tags
Categories
Users
Ask a Question
New Blog
Blogs
Exams
Recent questions in Bioprocess Engineering and Process Biotechnology
Filter
Recent
Hot!
Most votes
Most answers
Most views
Featured
Previous GATE
0
votes
0
answers
1
How yeast used for whisky production is different from the baker’s yeast and brewer’s yeast?
Deepika sharma gq
asked
in
Bioreaction Engineering
May 11
by
Deepika sharma gq
120
points
0
votes
4
answers
2
GATE2014-8
In a batch culture of Penicillium chrysogenum, the maximum penicillin synthesis occurs during the lag phase exponential phase stationary phase death phase
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2014
batch-column
0
votes
0
answers
3
GATE2014-10
Which of the following is employed for the repeated use of enzymes in bioprocesses? polymerization immobilization ligation isomerization
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2014
enzymes
0
votes
0
answers
4
GATE2014-12
The degree of reduction of ethanol is_______
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2014
degree-of-reduction-of-elements
numerical-answers
0
votes
0
answers
5
GATE2013-48
A solution was prepared by dissolving $\text{100 mg}$ of protein $X$ in $\text{100 ml}$ of water. Molecular weight of protein $X$ is $\text{15,000 Da};$ Avogadro’s number = $6.022\times 10^{23}$. Calculate the molarity$(\mu M)$ of the resulting solution. $66.6$ $6.6$ $0.67$ $0.067$
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2013
molarity-problems
0
votes
0
answers
6
GATE2013-46
The maximum cell concentration $(\text{g l}^{-1})$ expected in a bioreactor with initial cell concentration of $\text{1.75 g l}^{-1}$ and an initial glucose concentration of $\text{125 g l}^{-1}$ is ($Y_{X/S} = 0.6\:g\:cell/g$ substrate) ____________.
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2013
bioreactor
0
votes
1
answer
7
GATE2013-47
A fed batch culture was operated with intermittent addition of glucose solution at a flow rate of $\text{200 ml h}^{-1}$. The values of $K_s,\: \mu_m$ and $D$ are $\text{0.3 g l}^{-1}, 0.4\:h^{-1}$ and $\text{0.1 h}^{-1}$, respectively. Determine the concentration of growth limiting substrate $(gl^{-1})$ in the reactor at quasi-steady state. ______________
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2013
fedbatch-reactors
0
votes
0
answers
8
GATE2013-22
A chemostat is operated at a dilution rate of $0.6\; h^{-1}$. At steady state, the biomass concentration in the exit stream was found to be $30\; gl^{-1}$The biomass productivity $(g\; l^{-1}h^{-1})$ after $3h$ of steady state operation will be ___________.
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2013
dilution-problems
0
votes
0
answers
9
GATE2013-23
A batch bioreactor is to be scaled up from $\text{10 to 10,000}$ liters. The diameter of the large bioreactor is $10$ times that of the small bioreactor. The agitator speed in the small bioreactor is $\text{450 rpm}$. Determine the agitator speed (rpm) of the large bioreactor with same impeller tip speed as that of the small bioreactor. ____________
Milicevic3306
asked
in
Bioprocess Engineering and Process Biotechnology
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2013
reactors
0
votes
1
answer
10
GATE2018-50
At the end of a batch culture, glucose solution is added at a flow rate of $200 \: ml/h$. If the culture volume after $2$ h of glucose addition is $1000$ ml, the initial culture volume (in ml) is _________
gatecse
asked
in
Bioprocess Engineering and Process Biotechnology
Feb 20, 2018
by
gatecse
1.4k
points
gate2018
bioprocess
numerical-answers
0
votes
0
answers
11
GATE2018-44
Moist heat sterilization of spores at $121 ^\circ C$ follows first order kinetics as per the expression: $\dfrac{dN}{dt}=-k_dN$ where, $N$ is the number of viable spores, $t$I is the time, $k_d$ is the rate constant and $\dfrac{dN}{dt}$ is the rate of ... the number of viable spores from an initial value of $10^{10}$ to a final value of $1$ is (up to two decimal places) __________
gatecse
asked
in
Bioprocess Engineering and Process Biotechnology
Feb 20, 2018
by
gatecse
1.4k
points
gate2018
bioprocess
technology
numerical-answers
0
votes
0
answers
12
GATE2018-45
An aqueous solution containing $6.8$ mg/L of an antibiotic is extracted with amyl acetate. If the partition coefficient of the antibiotic is $170$ and the ratio of water to solvent is $85$, then the extraction factor is ________
gatecse
asked
in
Bioprocess Engineering and Process Biotechnology
Feb 20, 2018
by
gatecse
1.4k
points
gate2018
bioprocess
technology
numerical-answers
0
votes
0
answers
13
GATE2018-46
A microbial strain is cultured in a $100$ L stirred fermenter for secondary metabolite production. If the specific rate of oxygen uptake is $0.4 \: h^{-1}$ and the oxygen solubility in the broth is $8 $ ... $s^{-1}$) of oxygen required to achieve a maximum cell concentration of $12$ g/L is (up to two decimal places) ___________
gatecse
asked
in
Bioprocess Engineering and Process Biotechnology
Feb 20, 2018
by
gatecse
1.4k
points
gate2018
bioprocess
fermenter
numerical-answers
0
votes
0
answers
14
GATE2018-36
Shear stress versus shear rate behavior of four different types of fluids (I, II, III and IV) are shown in the figure below. Which one of the following options is correct? I-Newtonian, II-Bingham plastic, III-Dilatant, IV-Pseudoplastic I- ... -Bingham plastic I-Newtonian, II-Pseudoplastic, III-Bingham plastic, IV-Dilatant I-Newtonian, II-Bingham plastic, III-Pseudoplastic, IV-Dilatant
gatecse
asked
in
Bioprocess Engineering and Process Biotechnology
Feb 20, 2018
by
gatecse
1.4k
points
gate2018
bioprocess
engineering
0
votes
0
answers
15
GATE2018-13
Which one of the following bioreactor configurations is the basis for a trickling biological filter? Stirred tank Packed bed Air lift Fluidized bed
gatecse
asked
in
Bioprocess Engineering and Process Biotechnology
Feb 20, 2018
by
gatecse
1.4k
points
gate2018
bioprocess
engineering
To see more, click for the
full list of questions
or
popular tags
.
Ask a Question
Welcome to GATE BioTechnology, where you can ask questions and receive answers from other members of the community.
Recent questions in Bioprocess Engineering and Process Biotechnology
Search GO BioTechnology