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GATE BT 2022 | Question: 5
The binding free energy of a ligand to its receptor protein is $-11.5 \; \text{kJ mol}^{-1}$ at $300 \; \text{K.}$ What is the value of the equilibrium binding constant? Use $\text{R = 8.314 J mol}^{-1} \text{K}^{-1}.$ $0.01$ $1.0$ $4.6$ $100.5$

shilpasathish answered in Others Mar 9

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2

GATE 2022 -BT
The specific growth rate of a mold during exponential phase of its growth in a batch cultivation is 0.15 h−1 . If the cell concentration at 30 h is 33 g L−1 , the cell concentration in g L−1 (rounded off to the nearest integer) at 24 h is ________.

Kusumdabodiya asked in Plants Mar 9

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3

GATE BT 2022 | Question: 47
Figure below depicts simplified metabolic and transport reactions taking place in the production of $\text{B}$ from $\text{A}$ in a cell. The subscript $`i\text{'}$ refers to intracellular metabolites. $r_{j}$ is the $j^{\text{th}}$ ... $\text{B}, \; r_{4}$ is ___________$\frac{g}{(\text{g dry mass)h}}.$

makhdoom ghaya edited in Others Jul 3, 2022

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4

GATE BT 2022 | Question: 40
Which of the following plot(s) is(are) $\text{CORRECT}$ for an enzyme that obeys Michaelis-Menten kinetics, assuming $[S] \ll K_{m}$? $[S]$ is the concentration of the substrate, $K_{m}$ is the Michaelis constant, and $\text{v}_{o}$ is the initial reaction velocity. A. B. C. D.

makhdoom ghaya edited in Others Jul 3, 2022

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5

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, 2022

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6

GATE BT 2022 | GA Question: 9
In the square grid shown on the left, a person standing at $\text{P2}$ position is required to move to $\text{P5}$ position. The only movement allowed for a step involves, two moves along one direction followed by one move in a perpendicular direction . The permissible ... the minimum number of steps required to go from $\text{P2}$ to $\text{P5}$ is $4$ $5$ $6$ $7$

Lakshman Patel RJIT edited in Analytical Aptitude Mar 27, 2022

by Lakshman Patel RJIT

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7

GATE BT 2022 | GA Question: 10
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 visible in the above view may not be blank. Which one of the following represents a possible unfolding of the cube?

Lakshman Patel RJIT edited in Spatial Aptitude Mar 27, 2022

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8

GATE BT 2022 | GA Question: 8
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 $\text{CORRECT}$? mean > mode > median mode > median> mean mode > mean > median median > mode > mean

Lakshman Patel RJIT edited in Quantitative Aptitude Mar 27, 2022

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9

GATE BT 2022 | GA Question: 7
$\text{P}$ invested ₹$5000$ per month for $6$ months of a year and $\text{Q}$ invested ₹$x$ per month for $8$ months of the year in a partnership business. The profit is shared in proportion to the total investment made in that year. If at the end of that ... receives $\frac{4}{9}$ of the total profit, what is the value of $x$ (in ₹)? $2500$ $3000$ $4687$ $8437$

Lakshman Patel RJIT edited in Quantitative Aptitude Mar 27, 2022

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10

GATE BT 2022 | GA Question: 6
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 eating healthy in the first year are more likely to have better overall health ... overall health are more correlated at a young age, but not older age Healthy eating is more important for adults than kids

Lakshman Patel RJIT edited in Analytical Aptitude Mar 27, 2022

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11

GATE BT 2022 | GA Question: 5
In the following diagram, the point $\text{R}$ is the center of the circle. The lines $\text{PQ}$ and $\text{ZV}$ are tangential to the circle. The relation among the areas of the squares, $\text{PXWR, RUVZ}$ and $\text{SPQT}$ is Area of $\text{SPQT}$ = Area ... $\text{SPQT}$ - Area of $\text{RUVZ}$ Area of $\text{PXWR}$ = Area of $\text{RUVZ}$ - Area of $\text{SPQT}$

Lakshman Patel RJIT edited in Quantitative Aptitude Mar 27, 2022

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12

GATE BT 2022 | GA Question: 4
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 $\text{P}$. Based on the above information, $\text{T}$ is ____________ of $\text{S}$. the grandfather an uncle the father a brother

Lakshman Patel RJIT edited in Analytical Aptitude Mar 27, 2022

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13

GATE BT 2022 | GA Question: 3
If $p : q = 1:2$ $q : r = 4 : 3$ $r : s = 4 : 5$ and $u$ is $50\%$ more than $s$, what is the ratio $p : u$? $2 : 15$ $16 : 15$ $1 : 5$ $16 : 45$

Lakshman Patel RJIT edited in Quantitative Aptitude Mar 27, 2022

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14

GATE BT 2022 | GA Question: 2
Two straight lines pass through the origin $(x_{0}, y_{0}) = (0, 0)$. One of them passes through the point $(x_{1}, y_{1}) = (1, 3)$ and the other passes through the point $(x_{2}, y_{2}) = (1, 2)$. What is the area enclosed between the straight lines in the interval $[0, 1]$ on the $x$-axis? $0.5$ $1.0$ $1.5$ $2.0$

Lakshman Patel RJIT edited in Quantitative Aptitude Mar 27, 2022

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15

GATE BT 2022 | GA Question: 1
You should _________ when to say __________. no/no no / know know / know know / no

Lakshman Patel RJIT edited in Verbal Aptitude Mar 27, 2022

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16

GATE BT 2022 | Question: 55
A bacterial strain is grown in nutrient medium at $37^{\circ}\text{C}$ under aerobic conditions. The medium is inoculated with $10^{2}$ cells from a seed culture. If the number of cells in the culture is $10^{5}$ after $10$ hours of growth, the doubling time of the strain (rounded off to nearest integer) is ___________ $\text{h}.$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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17

GATE BT 2022 | Question: 54
A circular plasmid has three different but unique restriction sites for enzymes $ \text{a'}, \text{b'}$ and $ \text{c'}.$ When enzymes $ \text{a'}$ and $ \text{b'}$ ... $ \text{c'}$ and analysed by agarose gel electrophoresis. The number of bands observed in the gel is _________.

Lakshman Patel RJIT edited in Others Mar 27, 2022

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18

GATE BT 2022 | Question: 53
A pilot sterilization was carried out in a vessel containing $1000\; \text{m}^{3}$ medium with an initial spore concentration of $10^{8} \;\text{spores/ml.}$ The accepted level of contamination after sterilization is $1$ spore in the entire vessel. The ... cycles, the holding time at $121^{\circ}\text{C}.$ (rounded off to nearest integer) is _________ $\text{min}.$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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19

GATE BT 2022 | Question: 52
Consider the growth of $\textit{S. cerevisiae}$ under aerobic condition in a bioreactor and the specific growth rate of yeast is $0.5\; \text{h}^{-1}.$ ... $\text{kL mol}^{-1}\text{h}^{-1}.$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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20

GATE BT 2022 | Question: 51
Consider a piston-cylinder assembly shown in the figure below. The walls of the cylinder are insulated. The cylinder contains $1$ mole of an ideal gas at $300 \; \text{K}$ and the piston is held initially at the position $\text{z}_{1}$ using a stopper. ... $\text{K}.$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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21

GATE BT 2022 | Question: 50
Liquid-phase mass transfer coefficient $(k_{L})$ is measured in a stirred tank vessel using steady-state method by sparging air. Oxygen uptake by the microorganism is measured. The bulk concentration of $\text{O}_{2}$ is $10^{-4} \text{mol L}^{-1}.$ ... $100\; \text{m}^{2}/\text{m}^{3},$ the value of $k_{L}$ is ___________ $\text{cm s}^{-1}.$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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22

GATE BT 2022 | Question: 49
An enzyme catalyzes the conversion of substrate $\text{A}$ into product $\text{B}.$ The rate equation for this reaction is $-r_{A}= \dfrac{\text{C}_{A}}{5+C_{A}} \text{mol} \; \text{L}^{-1} \text{min}^{-1}$ Substrate $\text{A}$ at an ... $\text{MFR}$ required for $50\%$ conversion of substrate to product is __________ $\text{L}.$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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23

GATE BT 2022 | Question: 48
The amount of biomass in a reactor at the end of the batch process is $50 \; \text{g}.$ Fed-batch operation is initiated by feeding the substrate solution at a constant rate of $1 \; \text{L h}^{-1}.$ The concentration of substrate in the feed is ... system is at quasi-steady state, the maximum amount of biomass after $5 \; \text{h}$ of feeding is __________ $\text{g}.$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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24

GATE BT 2022 | Question: 46
For $x_{1}>0$ and $x_{2}>0,$ the value of $\displaystyle{}\lim_{x_{1} \to x_{2}}\frac{x_{1}-x_{2}}{x_{2}\ln\left(\frac{x_{1}}{x_{2}}\right)}$ is __________.

Lakshman Patel RJIT edited in Others Mar 27, 2022

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25

GATE BT 2022 | Question: 45
Consider a random variable $X$ with mean $\mu_{x}=0.1$ and variance $\sigma_{x}^{2}=0.2.$ A new random variable $Y=2X+1$ is defined. The variance of the random variable $Y$ (rounded off to one decimal place) is __________.

Lakshman Patel RJIT edited in Others Mar 27, 2022

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26

GATE BT 2022 | Question: 44
Which of the following statement(s) regarding trafficking in eukaryotic cells is(are) CORRECT? Dynamic binds $\text{GTP}$ and is involved in vesicle budding Dynamic is involved in cytoskeletal remodelling Dynamic binds $\text{ATP}$ and ... in movement of organelles along microtubules Dynamic binds $\text{GTP}$ and is involved in movement of organelles along microtubules

Lakshman Patel RJIT edited in Others Mar 27, 2022

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27

GATE BT 2022 | Question: 43
Introduction of foreign genes into plant cells can be carried out using Agrobacterium $\text{Cacl}_{2}$ mediated plasmid uptake Electroporation Gene gun

Lakshman Patel RJIT edited in Others Mar 27, 2022

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28

GATE BT 2022 | Question: 42
Emerging viruses such as $\text{SARS-Co V2}$ cause epidemics. Which of the following process(es) contribute to the rise of such viruses? Mutation of existing virus Jumping of existing virus from current to new hosts Spread of virus in the new host population Replication of virus outside a host

Lakshman Patel RJIT edited in Others Mar 27, 2022

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29

GATE BT 2022 | Question: 41
Which of the following statement(s) is(are) CORRECT regarding the $lac$ operon in $E. coli$ when grown in the presence of glucose and lactose? At low glucose level, the operon is activated At high glucose level, the operon is ... lactose The $lac$ repressor binds to operator region inactivating the operon Binding of lactose to the $lac$ repressor induces the operon

Lakshman Patel RJIT edited in Others Mar 27, 2022

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30

GATE BT 2022 | Question: 39
Which of the following is(are) $\text{COMMON}$ feature(s) for both aerobic and anaerobic bacterial cultures? Glycolysis $\text{NAD}^{+}$ is the oxidising agent Oxidative phosphorylation Two net $\text{ATP}$ molecules formed per glucose molecule

Lakshman Patel RJIT edited in Others Mar 27, 2022

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31

GATE BT 2022 | Question: 38
Which of the following statements are $\text{CORRECT}$ for an enzyme entrapped in a spherical particle? Effectiveness factor is ratio of the reaction rate with diffusion-limitation to the reaction rate without diffusion-limitation Internal ... increases with decrease in Thiele modulus Internal diffusion-limitation can be reduced by decreasing the size of the particle

Lakshman Patel RJIT edited in Others Mar 27, 2022

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32

GATE BT 2022 | Question: 37
Consider the ordinary differential equation $\dfrac{dy}{dx} = f(x,y) = 2x^{2} – y^{2}.$ If $y(1)=1,$ the value(s) of $y(1.5),$ using the Euler’s implicit method $\left[y_{n+1}=y_{n}+hf(x_{n+1},y_{n+1}) \right]$ with a step size of $h=0.5,$ is (are) $-1-5 \sqrt{0.3}$ $-1+5 \sqrt{0.3}$ $1+5 \sqrt{0.3}$ $1-5 \sqrt{0.3}$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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33

GATE BT 2022 | Question: 36
Adenine can undergo a spontaneous change to hypoxanthine in a cell, leading to a $\text{DNA}$ base pair mismatch. The $\text{CORRECT}$ combination of enzymes that are involved in repairing this damage is Nuclease, $\text{DNA}$ ... $\text{DNA}$ polymerase, $\text{DNA}$ ligase Primase, helicase, $\text{DNA}$ polymerase

Lakshman Patel RJIT edited in Others Mar 27, 2022

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34

GATE BT 2022 | Question: 35
Which of the following spectroscopic technique(s) can be used to identify all the functional groups of an antibiotic contaminant in food? Infrared Circular dichroism Nuclear magnetic resonance UV-Visible $\text{P}$ only $\text{P}$ and $\text{R}$ only $\text{P, Q}$ and $\text{R}$ only $\text{P, Q, R}$ and $\text{S}$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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35

GATE BT 2022 | Question: 34
The maximum parsimony method is used to construct a phylogenetic tree for a set of sequences. Which one of the following statements about the method is $\text{CORRECT}?$ It predicts the tree that minimizes the steps required to ... observed variations It predicts the tree with the least number of branch points It employs probability calculations to identify the tree

Lakshman Patel RJIT edited in Others Mar 27, 2022

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36

GATE BT 2022 | Question: 33
The enzymes involved in ubiquitinylation of cell-cycle proteins are $\text{E}_{1}$ and $\text{E}_{2}$ Only $\text{E}_{1}$ and $\text{E}_{3}$ Only $\text{E}_{1}$ and $\text{E}_{4}$ Only $\text{E}_{1}$, $\text{E}_{2}$ and $\text{E}_{3}$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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37

GATE BT 2022 | Question: 32
Which of the following are CORRECT about protein structure? Secondary structure is formed by a repeating pattern of interactions among the polypeptide backbone atoms Tertiary structure is the three-dimensional arrangement of the polypeptide backbone atoms only Quaternary structure refers to an assembly ... Only $\text{Q}$ and $\text{R}$ Only $\text{P, Q}$ and $\text{R}$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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38

GATE BT 2022 | Question: 31
Which of the following statements are $\text{CORRECT}$ for a controller? In a proportional controller, a control action is proportional to the error In an integral controller, a control action is proportional to the derivative of the error There is no offset in the response of the ... and $\text{R}$ Only $\text{P}$ and $\text{S}$ Only $\text{Q}$ and $\text{S}$ Only

Lakshman Patel RJIT edited in Others Mar 27, 2022

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39

GATE BT 2022 | Question: 30
Match the stationary phase (Column I) with its corresponding chromatography technique (Column II). ... $\text{P-3, Q-4, R-2, S-1}$ $\text{P-4, Q-1, R-3, S-2}$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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40

GATE BT 2022 | Question: 29
A $2\times 2$ matrix $\textbf{P}$ has an eigen value $\lambda_{1}=2$ with eigenvector $x_{1}=\begin{pmatrix} 1 \\ 0 \end{pmatrix}$ and another eigenvalue $\lambda_{2}=5,$ with eigenvector $x_{2}=\begin{pmatrix} 1 \\ 1 \end{pmatrix}.$ The matrix $\textbf{P}$ ... $\begin{pmatrix} 1 & 1 \\ 0 & 1 \end{pmatrix}$ $\begin{pmatrix} 1 & 1 \\ 1 & 0 \end{pmatrix}$

Lakshman Patel RJIT edited in Others Mar 27, 2022

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