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Recent questions tagged gatebt-2023
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41
GATE BT 2023 | Question: 31
Which of the following statement(s) is(are) TRUE about induced pluripotent stem cells? They can self-renew They require specific signals to maintain their stemness They cannot be genetically manipulated They can form organoids in vitro
Which of the following statement(s) is(are) TRUE about induced pluripotent stem cells?They can self-renewThey require specific signals to maintain their stemnessThey cann...
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GATE BT 2023 | Question: 32
Which of the following statement(s) is(are) TRUE about fluoroquinolone drugs? They contain quinolone ring(s) They inhibit RNA polymerase They bind to bacterial topoisomerase They bind to $23 S$ rRNA within the $50 \mathrm{~S}$ ribosome subunit
Which of the following statement(s) is(are) TRUE about fluoroquinolone drugs?They contain quinolone ring(s)They inhibit RNA polymeraseThey bind to bacterial topoisomerase...
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GATE BT 2023 | Question: 33
Which of the following is(are) plant protoplast fusogenic agent(s)? Sodium nitrate Polyvinyl alcohol Polyethylene glycol Bromoxynil
Which of the following is(are) plant protoplast fusogenic agent(s)?Sodium nitratePolyvinyl alcoholPolyethylene glycolBromoxynil
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GATE BT 2023 | Question: 34
Direct DNA transfer method(s) used for plant genetic engineering is(are) microparticle bombardment electroporation polyethylene glycol treatment Agrobacterium-mediated transformation
Direct DNA transfer method(s) used for plant genetic engineering is(are)microparticle bombardmentelectroporationpolyethylene glycol treatmentAgrobacterium-mediated transf...
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GATE BT 2023 | Question: 35
Which of the following vector(s) is(are) used to clone a DNA fragment of size $220 \mathrm{~kb}$? Bacterial artificial chromosome Yeast artificial chromosome Cosmids $\text{pUC19}$ plasmid
Which of the following vector(s) is(are) used to clone a DNA fragment of size $220 \mathrm{~kb}$?Bacterial artificial chromosomeYeast artificial chromosomeCosmids$\text{p...
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GATE BT 2023 | Question: 36
The following reaction represents biomass synthesis from hexadecane ... represents the biomass. The value of respiratory quotient (rounded off to two decimal places) is ___________.
The following reaction represents biomass synthesis from hexadecane$\mathrm{C}_{16} \mathrm{H}_{34}+12.5 \mathrm{O}_2+2.13 \mathrm{NH}_3 \rightarrow 10.6 \mathrm{CH}_{1.6...
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GATE BT 2023 | Question: 37
Temperature of a reaction with an activation energy value of $15 \mathrm{kcal} \mathrm{mol}^{-1}$ is increased from $300 \mathrm{~K}$ to $310 \mathrm{~K}$. If the value of the ideal gas constant $(\mathrm{R})$ ... $\left(k_{310} / k_{300}\right)$(rounded off to two decimal places) is _____________.
Temperature of a reaction with an activation energy value of $15 \mathrm{kcal} \mathrm{mol}^{-1}$ is increased from $300 \mathrm{~K}$ to $310 \mathrm{~K}$. If the value o...
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GATE BT 2023 | Question: 38
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 concentration are $0.2 g \cdot g^{-1}$ and $10 g \cdot L^{-1}$, respectively. The oxygen transfer rate (in $g \cdot L^{-1} \cdot h^{-1}$) is ______________.
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...
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GATE BT 2023 | Question: 39
Aqueous two-phase extraction is used to recover } \alpha \text {-amylase from a solution. A polypropylene glycol-dextran mixture is added and the solution separates into upper and lower phases. The partition coefficient is $4.0$ and the ratio of upper ... volume is $5.0$. The enzyme recovery or yield (in percentage, rounded off to the nearest integer) is ______________.
Aqueous two-phase extraction is used to recover } \alpha \text {-amylase from a solution. A polypropylene glycol-dextran mixture is added and the solution separates into ...
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GATE BT 2023 | Question: 40
E. coli cultivated at $298 \mathrm{~K}$ uptakes an uncharged compound (A) by passive diffusion. The intracellular and extracellular concentrations of $\mathrm{A}$ are $0.001 \mathrm{M}$ and $0.1 \mathrm{M}$, respectively. If the value of the ... $\mathrm{A}$ (rounded off to two decimal places) is ______________.
E. coli cultivated at $298 \mathrm{~K}$ uptakes an uncharged compound (A) by passive diffusion. The intracellular and extracellular concentrations of $\mathrm{A}$ are $0...
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GATE BT 2023 | Question: 41
If there are three unrooted trees for four protein sequences, the number of rooted trees for the same number of sequences is _______________.
If there are three unrooted trees for four protein sequences, the number of rooted trees for the same number of sequences is _______________.
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GATE BT 2023 | Question: 42
The number of different possible ways of forming five intramolecular disulfide bonds with ten cysteine residues of a protein is ______________.
The number of different possible ways of forming five intramolecular disulfide bonds with ten cysteine residues of a protein is ______________.
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GATE BT 2023 | Question: 43
The following schematic diagram shows a chemostat with cell recycle where $\mathrm{F}_0$ and $\mathrm{F}_{\mathrm{r}}$ are the volumetric flow rates (in $L \cdot h^{-1}$ ) of feed and recycle streams, respectively. $\mathrm{X}_1, \mathrm{X}_0$ ... $\mathrm{X}$ (in $g \cdot L^{-1}$, rounded off to one decimal place) is ________________.
The following schematic diagram shows a chemostat with cell recyclewhere $\mathrm{F}_0$ and $\mathrm{F}_{\mathrm{r}}$ are the volumetric flow rates (in $L \cdot h^{-1}$ )...
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GATE BT 2023 | Question: 44
An enzyme (E) catalyzes the biochemical reaction $A \rightarrow B$ with $k_{c a t}$ equal to $500 s^{-1}$. If the initial reaction velocity $\left(V_{0}\right)$ is $10 \mu M . s^{-1}$ at the total enzyme concentration $\left[E_{t}\right]$ of $30 n M$ and substrate concentration $[\mathrm{A}]$ of $40 \mu M$, the value of $K_{m}($ in $\mu M)$ is ______________.
An enzyme (E) catalyzes the biochemical reaction $A \rightarrow B$ with $k_{c a t}$ equal to $500 s^{-1}$. If the initial reaction velocity $\left(V_{0}\right)$ is $10 \m...
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GATE BT 2023 | Question: 45
DNA sample collected from an unidentified bacterial species $(Y)$ contains $13 \%$ of adenine. The $G+C$ content (in percentage) of $Y$ is ____________.
DNA sample collected from an unidentified bacterial species $(Y)$ contains $13 \%$ of adenine. The $G+C$ content (in percentage) of $Y$ is ____________.
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GATE BT 2023 | Question: 46
If $1000 \mathrm{bp}$ of a double-helical DNA weighs $1 \times 10^{-18} \mathrm{gm}$ and distance between two $\mathrm{bp}$ is $0.34 \mathrm{~nm}$, the total amount of DNA (in mg, rounded off to one decimal place) required to stretch from Earth to Moon (assuming the distance between Earth and Moon to be $3,74,000 \mathrm{~km}$ ) is ______________.
If $1000 \mathrm{bp}$ of a double-helical DNA weighs $1 \times 10^{-18} \mathrm{gm}$ and distance between two $\mathrm{bp}$ is $0.34 \mathrm{~nm}$, the total amount of DN...
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GATE BT 2023 | Question: 47
A protein has three identical sites arranged at the vertices of an equilateral triangle. If one site is filled with a dye (donor), the measured quantum yield $\left(\phi_{D}\right)$ is $0.5$. Filling one site with a donor dye and a ... of one site filled with donor and the other two sites filled with acceptor dye (rounded off to three decimal places) is _____________.
A protein has three identical sites arranged at the vertices of an equilateral triangle. If one site is filled with a dye (donor), the measured quantum yield $\left(\phi_...
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GATE BT 2023 | Question: 48
If $A=\left(\begin{array}{ll}1 & 2 \\ 3 & 5\end{array}\right)$, the value of $\left|A^{4}+3 A^{2}-5 A+6 I\right|$ is _____________.
If $A=\left(\begin{array}{ll}1 & 2 \\ 3 & 5\end{array}\right)$, the value of $\left|A^{4}+3 A^{2}-5 A+6 I\right|$ is _____________.
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GATE BT 2023 | Question: 49
If $f(x)=\frac{\sin x+\cos x}{\sin x-\cos x}$, the value of $f^{\prime}(x)$ at $x=0$ is ___________.
If $f(x)=\frac{\sin x+\cos x}{\sin x-\cos x}$, the value of $f^{\prime}(x)$ at $x=0$ is ___________.
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GATE BT 2023 | Question: 50
If $f(2)=5$ and $(f(x))(f(x+1))=3$ for all real values of $x$, the value of $f(10)$ is ____________.
If $f(2)=5$ and $(f(x))(f(x+1))=3$ for all real values of $x$, the value of $f(10)$ is ____________.
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GATE BT 2023 | Question: 51
Ten playing cards numbered $1,2,3, \ldots, 10$ are placed face down on a table. One card is drawn at random, its number recorded, and then replaced face down. A card is drawn again at random. The probability that the number on the second draw is greater than the number on the first draw (rounded off to two decimal places) is ___________.
Ten playing cards numbered $1,2,3, \ldots, 10$ are placed face down on a table. One card is drawn at random, its number recorded, and then replaced face down. A card is d...
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GATE BT 2023 | Question: 52
The values of the consistency index ' $K$ ' and the flow behavior index ' $n$ ' of a dilatant fluid are 0.415 (in CGS units) and $1.23$, respectively. The value of the apparent viscosity (in $g . \mathrm{cm}^{-1} . \mathrm{s}^{-1}$ ) of this fluid at a shear rate of $60 \mathrm{~s}^{-1}$ (rounded off to the nearest integer) is _____________.
The values of the consistency index ' $K$ ' and the flow behavior index ' $n$ ' of a dilatant fluid are 0.415 (in CGS units) and $1.23$, respectively. The value of the ap...
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GATE BT 2023 | Question: 53
An evaporator is insulated using glass wool material of $0.15 \mathrm{~m}$ thickness. The inner most surface and the outer surface of the insulation are at $700{ }^{\circ} \mathrm{C}$ and $80^{\circ} \mathrm{C}$, respectively. The mean thermal ... in $W$ ) through $1.2 \mathrm{~m}^2$ of the evaporator wall surface (rounded off to the nearest integer) is ______________.
An evaporator is insulated using glass wool material of $0.15 \mathrm{~m}$ thickness. The inner most surface and the outer surface of the insulation are at $700{ }^{\circ...
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GATE BT 2023 | Question: 54
A proportional controller is used to control the temperature of an autoclave from $60^{\circ} \mathrm{C}$ to $130^{\circ} \mathrm{C}$. If the proportional band setting of the controller is $25 \%$, the proportional gain value is ___________.
A proportional controller is used to control the temperature of an autoclave from $60^{\circ} \mathrm{C}$ to $130^{\circ} \mathrm{C}$. If the proportional band setting of...
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GATE BT 2023 | Question: 55
A dNTP master-mix is prepared by combining $40 \mu L$ of each $20 \mathrm{mM}$ dNTP stock (dATP, dCTP, dGTP and dTTP). $4 \mu L$ of this dNTP master-mix is added to a PCR mix and the final volume is adjusted to $50 \mu L$. The concentration (in $\mu M$ ) of total dNTPs in the $\text{PCR}$ mix is _____________.
A dNTP master-mix is prepared by combining $40 \mu L$ of each $20 \mathrm{mM}$ dNTP stock (dATP, dCTP, dGTP and dTTP). $4 \mu L$ of this dNTP master-mix is added to a PCR...
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