Recent activity

1 1 vote
1 1 answer
Which one of the following is the basic principle of Sanger's DNA sequencing method?Chain termination by incorporation of dideoxynucleotidesChain elongation by incorporat...
0 0 votes
1 1 answer
A microbial culture (following Monod model for growth) has a maximum specific growth rate of $0.1 \mathrm{~h}^{-1}$, Monod constant of $1 \mathrm{mg} \mathrm{L}^{-1}$ and...
0 0 votes
1 1 answer
For the given matrix, which of the statements given below is/are true?\[\left[\begin{array}{ccc}3 & 1 & 5 \\2 & -1 & 0 \\5 & 2 & 9\end{array}\right]\]The matrix is full r...
1 1 vote
1 1 answer
Match enzymes in $\text{Group I}$ with their corresponding industrial application in $\text{Group II}$.$$\begin{array}{|l|l|l|l|} \hline & \textbf{Group I} && \textbf{Gro...
1 1 vote
1 1 answer
The specific growth rate of a yeast having a doubling time of $0.693 \; \text{h}$ (rounded off to nearest integer) is ________ $\text{h}^{-1}.$
1 1 vote
1 1 answer
A microorganism is grown in a batch culture using glucose as a carbon source. The apparent growth yield is $0.5 \frac{\text{g biomass}}{\text{g substrate}}.$ The initial ...
0 0 votes
1 1 answer
The overall stoichiometry for an aerobic cell growth is$3 \text{C}_{6} \text{H}_{12} \text{O}_{6} + 2.5 \text{NH}_{3} + \text{O}_{2} \rightarrow 1.5 \text{C}_{a} \text{H}...
1 1 vote
1 1 answer
E. coli is cultivated in a chemostat operated at a dilution rate of $0.2 h^{-1}$. The values of biomass yield due to oxygen consumption and the steady state biomass conce...
0 0 votes
1 1 answer
A fed batch process is running at quasi-steady state with respect to substrate and biomass concentration. At $2 \mathrm{~h}$, the culture volume is $500 \mathrm{~L}$ with...
0 0 votes
1 1 answer
Consider a cube made by folding a single sheet of paper of appropriate shape. The interior faces of the cube are all blank. However, the exterior faces that are not visib...
1 1 vote
1 1 answer
Healthy eating is a critical component of healthy aging. When should one start eating healthy? It turns out that it is never too early. For example, babies who start eati...
1 1 vote
1 1 answer
Given the statements:$\text{P}$ is the sister of $\text{Q}$.$\text{Q}$ is the husband of $\text{R}$.$\text{R}$ is the mother of $\text{S}$.$\text{T}$ is the husband of $\...
0 0 votes
1 1 answer
The catalytic efficiency of an enzyme following Michaelis-Menten kinetics is defined by$k_{\text {Cat }}$$V_{\max } / k_{\mathrm{Cat}}$$k_{\text {Cat }} / K_{\mathrm{M}}$...
0 0 votes
1 1 answer
Which of the following is/are extra-cellular matrix protein(s)?MyosinFibronectinLaminCollagen
0 0 votes
1 1 answer
Fed batch cultivation is suitable for which of the following?Processes with substrate inhibitionProcesses with product inhibitionHigh cell density cultivationP and Q only...
0 0 votes
1 1 answer
It is desired to scale-up a fermentation from $1L$ to $1000L$ vessel by maintaining a constant power-to-volume ratio. The small fermenter is operated at an agitator speed...
0 0 votes
1 1 answer
Which one of the following represents non-growth associated product formation kinetics in a bioprocess system? $X$ and $P$ denote viable cell and product concentrations, ...
0 0 votes
1 1 answer
The mean of the following series is $\_\_\_\_$. (rounded off to three decimal places)$0.01,0.02,0.03, \cdots \cdots, 1$ 
0 0 votes
1 1 answer
Which of the following enzyme is involved in the protection of cells from reactive oxygen species?HexokinaseGlucose $6$-phosphate dehydrogenaseEnolasePyruvate kinase
0 0 votes
1 1 answer
Given the sequence of terms, AD CG FK JP, the next term isOVOWPVPW
0 0 votes
1 1 answer
A series $(\mathrm{S})$ is given as $\mathrm{S}=1+3+5+7+9+\ldots \ldots$The sum of the first $50$ terms of $\mathrm{S}$ is __________.
0 0 votes
1 1 answer
There are $3$ Indians and $3$ Chinese in a group of $6$ people. How many subgroups of this group can we choose so that every subgroup has at least one Indian?$56$$52$$48$...
0 0 votes
1 1 answer
The above frequency chart shows the frequency distribution of marks obtained by a set of students in an exam.From the data presented above, which one of the following is ...
0 0 votes
1 1 answer
The profit shares of two companies $P$ and $Q$ are shown in the figure. If the two companies have invested a fixed and equal amount every year, then the ratio of the tota...
1 1 vote
0 0 answers
The total exports and revenues from the exports of a country are given in the two pie charts below.The pie chart for exports shows the quantity of each item as a percenta...
0 0 votes
0 0 answers
$\text{If}$ $3 \le X \le 5 \text{ and } 8 \le Y \le 11 \text{ then which of the following options is TRUE?}$$\frac{3}{5} \le \frac{X}{Y} \le \frac{8}{5}$$\frac{3}{11} \le...
0 0 votes
0 0 answers
A packed bed bioreactor with length $1 \text{~m}$ and inside diameter $10 \text{~cm}$ has liquid flowing at an interstitial velocity of $1 \mathrm{~cm} \mathrm{~s}^{-1}$....
0 0 votes
0 0 answers
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 ...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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) 
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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 $\...
0 0 votes
0 0 answers
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...
0 0 votes
0 0 answers
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...
To see more, click for the full list of questions or popular tags.