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442
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447
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452
A bioreactor is scaled up based on equal impeller tip speed. Consider the following parameters for small and large bioreactors: $$\begin{array}{|l|l|l|l|} \hline \textbf...
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454
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456
$\dfrac{d^2y}{dx^2}-y=0$. The conditions for this second order homogeneous differential equation are $y(0)=1$ and $\dfrac{dy}{dx}=3$ at $x=0$. The value of $y$ when $x = ...
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457
The value of determinant $A$ given below is ________.$A = \begin{pmatrix} 5 & 16 & 81 \\ 0 & 2 & 2 \\ 0 & 0 & 16 \end{pmatrix}$
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458
Consider the equation$V=\dfrac{aS}{b+S+\dfrac{S^2}{c}}$Given $a = 4$, $b = 1$ and $c = 9$, the positive value of $S$ at which $V$ is maximum, will be _________
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459
An enzyme catalyzes a reaction bydecreasing the energy of the substrate.decreasing the activation energy of the reaction.decreasing product stability.increasing the activ...
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461
Which one of the following organisms is an indicator of fecal contamination?$\textit{Escherichia coli}$$\textit{Streptococcus lactis}$$\textit{Bacillus subtilis}$$\textit...
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462
The surface area (in $m^2$) of the largest sphere that can fit into a hollow cube with edges of length $1$ meter is ______Given data: $\pi=3.14$
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463
In a thin layer chromatography experiment using a silica gel plate, a compound showed migration of $12.5$ cm and the solvent front showed migration of $18$ cm. The $R_f$ ...
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464
$\underset{x \to 0}{\lim} \dfrac{\sin(x)}{x}$ is ________
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465
Which one of the following mechanisms is used by human pathogens to evade host immune responses?Somatic hypermutationAntibody productionAntigenic variationComplement acti...
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466
If the nucleotide composition $(\%)$ of a viral genome is $A = 10$, $U = 20$, $C = 40$, and $G = 30$, which one of the following is this genome?Double stranded RNASingle ...
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467
Which one of the following techniques can be used to determine the structure of a $15$ kDa globular protein at atomic resolution?Raman spectroscopyIR spectroscopyUV spect...
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469
The plant hormone indole-$3$-acetic acid is derived fromhistidinetyrosinetryptophanproline
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470
Enzyme-linked immunosorbent assay (ELISA) is used forquantifying antibody levels in blooddetermining the molecular weight of an antigenpurifying proteins from biological ...
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471
Macrophages eliminate pathogenic bacteria upon activation byNK cellsbasophilsCD$4+$ T cellsplasma cells
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472
If a protein contains four cysteine residues, the number of different ways they can simultaneously form two intra-molecular disulphide bonds is __________.
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473
Secretory proteins synthesized by ER-associated ribosomes traverse throughmitochondriaperoxisomesthe Golgi apparatusthe nucleus
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474
For $y=f(x)$, if $\dfrac{d^2y}{dx^2}=0$, $\dfrac{dy}{dx}=0$ at $x=0$, and $y=1$ at $x=1$, the value of $y$ at $x=2$ is __________
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475
During protein synthesis, tRNAs are NOT involved incharginginitiationelongationtermination
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476
In eukaryotes, cytokinesis is inhibited bycytochalasin Dvinblastinenocodazolecolchicine
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477
A proto-oncogene is suspected to have undergone duplication in a certain type of cancer. Of the following techniques, which one would verify the gene duplication?Northern...
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478
A polymerase chain reaction (PCR) was set up with the following reagents: DNA template, Taq polymerase, buffer, dNTPs, and Mg$^{2+}$. Which one of the following is missin...