Recent activity by Shri 1

A packed bed bioreactor with length $1 \text{~m}$ and inside diameter $10 \text{~cm}$ has liquid flowing at an interstitial velocity of $1 \mathrm{~cm} \mathrm{~s}^{-1}$....

A disease-associated allele shows $\text{X}$-linked recessive inheritance. If the mother is a carrier of the disease, the father is genetically normal and the child born ...

In the process of generating a clonal mammalian cell line, a single cell was seeded in a well of a cell culture plate. After the first $48$ hours, one of the progeny cell...

It is desired to cultivate $150$ mg (dry weight) microbial cells with an empirical formula of $\mathrm{C}_{5} \mathrm{H}_{7} \mathrm{O}_{2} \mathrm{~N}$. If the phosphoru...

A microbe that follows Monod growth kinetics on a limiting substrate (maximum specific growth rate of $0.5 \mathrm{~h}^{-1}$ and Monod constant of $0.1 ~\mathrm{mg} \math...

A substrate is consumed in a zero order reaction such that its concentration falls from $42 \mathrm{~g} \mathrm{~L}^{-1}$ to $14 \mathrm{~g} \mathrm{~L}^{-1}$ in $4$ hour...

A batch sterilizer is being operated at $121^{\circ} \mathrm{C}$ for sterilizing a medium containing microbial cells. Assume that the thermal deactivation of cells is a f...

From the following plot of $\dfrac{d y}{d x}$ versus $x$ and if $y(2)=5$, the value of $y(3)$ is $\_\_\_\_$. (rounded off to one decimal place) 

The electron equivalent per liter (e-eq $\mathrm{L}^{-1}$ ) of acetate ion solution of concentration $10 \mathrm{~g} \mathrm{~L}^{-1}$ is $\_\_\_\_$ $\mathrm{e}^{-} \math...

A $\text{CSTR}$ with a volume of $100 \mathrm{~m}^{3}$ is operated in cell recycle mode. At a volumetric flow rate of $10 \mathrm{~m}^{3}$ day ${ }^{-1}$ and effluent bio...

A heat exchanger during operation in a bioprocess has a steady temperature of $90^{\circ} \mathrm{C}$. After completion of its operation, it was shut down and it was obse...

A straight line $y=x-1$ intersects a circle with center at $x=1, y=1$ and radius of magnitude $1$ at two points. The length of the chord formed by this intersection is $\...

If the straight lines given by the following two equations are parallel to each other, the value of $\boldsymbol{a}$ is $\_\_\_\_$. (answer in integer)\[4 x+7 y=6 ; \quad...

Consider the equation $\dfrac{d y}{d x}=\dfrac{1}{x}$The value of the integral $\int_{1}^{2} d y$ using trapezoidal method and interval $h=0.25$ is $\_\_\_\_$. (rounded o...

An enzyme-catalyzed reaction is found to have $\Delta \mathrm{G}=-100 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Which of the following statements about this reaction is/are true?...

For an ideal plug flow reactor, which of the following statements is/are true?It can be approximated by a large number of ideal continuous stirred tank reactors connected...

Which of the following is/are posttranslational modification(s) involved in epigenetic control of gene expression?Arginine methylationLysine acetylationCytosine methylati...

For a liquid flowing in a circular cross section pipe, the transition from laminar to turbulent flow will NOT depend on which of the following factor(s)?The diameter of t...

In an aerobic fermentation with air sparging, which of the following options can be used to increase the volumetric mass transfer coefficient for oxygen transfer?Using pu...

For a Newtonian fluid, a plot of shear stress (on $\text{Y}$ axis) against shear rate (on $\text{X}$ axis) will result in a straight line $\_\_\_\_$.parallel to the $\tex...

A microbial culture is being grown in a bioreactor with continuous aeration. The dissolved oxygen probe provided with the system shows a reading of zero. In this context,...

The RNA sequence below depicts the part of a $330$ nucleotides long $\text{mRNA}$ and it encodes the $\text{C}$-terminal portion of a protein.$5^{\prime}-\ldots \ldots$ $...

Messenger $\text{RNAs (mRNAs)}$ translate to generate polypeptides and the translation terminates at the $\text{UGA, UAG}$ or $\text{UAA}$ stop codons. The $\text{AGA}$ c...

By elemental analysis of a biomass sample, it was found that the cells in the given sample are composed of (by weight) $\mathrm{C}=50 \%, \mathrm{H}=8 \%, \mathrm{O}=20 \...

Match the biomolecules in Column $\text{I}$ with their function given in Column $\text{II}$\[\begin{array}{|l|l|}\hline\text{Column I} & \text{Column II} \\\hline\text{P....

Match the genetic disorders in Column $\text{I}$ to the corresponding underlying cause in Column $\text{II}$\[\begin{array}{|l|l|}\hline\text{Column I} & \text{Column II}...

Match the immunological terms in $\textbf{Column I}$ with their function/description in the $\textbf{Column II}$\[\begin{array}{|l|l|}\hline\textbf{Column I} & \textbf{Co...

In the open-loop process shown in the figure, the input $U(s)$, the transfer function $G_{p}(s)$ and the output $Y(s)$ are given in the Laplace domain in terms of the Lap...

You have purified an enzyme using a series of chromatographic methods. It was observed that a $10 ~\mu \mathrm{g} \mathrm{~mL}^{-1}$ of this purified enzyme converted $10...

Given below is the Gibbs free energy change ( $\Delta \mathrm{G}$ ) in kilo Joules per electron equivalent ( $\mathrm{kJ} \mathrm{e}^{-} \mathrm{eq}^{-1}$ ) at pH $7.0$, ...

To determine the viable cell count of a bacterial culture, you have plated $50 ~\mu \mathrm{~L}$ of a $100$ -fold diluted sample of the culture on a nutrient agar plate a...

You are characterizing a new enzyme isolated and purified in the laboratory. If the maximum velocity of the enzyme is $1800 ~\mu$ moles $\mathrm{L}^{-1} \mathrm{~min}^{-1...

BLAST and its extensions can be used to determine similarity of a query protein sequence with which of the following database(s)?A database of translated nucleotide seque...

Which of the following drugs inhibit(s) $\text{ATP-ADP}$ translocase?OligomycinAtractylosideAmytalBongkrekic acid

The equation $\dfrac{d^{2} y}{d x^{2}}-y=0$ has a solution of the form $y=e^{A x}$. The value(s) of $A$ satisfying this is/are:$0$$1$$-1$$-\infty$

Which component of the $\text{CRISPR/Cas9}$ gene editing system is $\text{NOT}$ of natural origin?$\text{CAS9}$ protein$\text{CRISPR}$ repeats$\text{PAM}$ sequence$\text{...