Recent questions tagged bioprocess / GO BioTechnology

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1

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 _________

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 ...

gatecse

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gatecse asked Feb 20, 2018

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2

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) ___________

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...

gatecse

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gatecse asked Feb 20, 2018

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3

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 ________

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 ...

gatecse

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gatecse asked Feb 20, 2018

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4

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) __________

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 spore...

gatecse

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gatecse asked Feb 20, 2018

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5

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

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?...

gatecse

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gatecse asked Feb 20, 2018

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6

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

Which one of the following bioreactor configurations is the basis for a trickling biological filter?Stirred tankPacked bedAir liftFluidized bed

gatecse

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gatecse asked Feb 20, 2018