Recent questions without answers

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81
Which of the following methods are used for detection of DNA and RNA, respectively?Southern and Northern blotting Southern and Western blottingNorthern and Southern blott...
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83
Which one of the following programs is used for finding distantly related (or remote) protein homologs?BLASTNBLASTXPSI-BLASTTBLASTX
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84
Which one of the following is used for global alignment of two protein sequences?Chou-Fasman methodGarnier-Osguthorpe-Robson (GOR) methodNeedleman-Wunsch algorithmSmith-W...
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85
Fabry disease in humans is a X-linked disease. The probability (in percentage) for a phenotypically normal father and a carrier mother to have a son with Fabry disease is...
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86
The value of $\lim _{x \rightarrow 0}\left[\frac{\cos 2 x-\cos 4 x}{x^{2}}\right]$ is ___________.
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87
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 __________.
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88
Two fair six-sided dice are thrown. The probability of getting $12$ as the product of the numbers on the dice (rounded off to two decimal places) is __________.
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89
If $7^{3 x}=216$, the value of $7^{-x}$ (rounded off to three decimal places) is _____________.
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90
The distance between the two points of intersection of $x^{2}+y=7$ and $x+y=7$ (rounded off to two decimal places) is ___________.
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94
The event(s) that lead(s) to inactivation of tumor suppressor genes in cancer cells is(are)gene amplificationpromoter methylationloss of heterozygosityhistone acetylation...
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95
Methylation of $\mathrm{CpG}$ islands near the promoter of a gene can inhibit transcription bypreventing RNA polymerase bindingfacilitating repressor bindingfacilitating ...
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96
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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97
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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98
Which of the following is(are) plant protoplast fusogenic agent(s)?Sodium nitratePolyvinyl alcoholPolyethylene glycolBromoxynil
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99
Direct DNA transfer method(s) used for plant genetic engineering is(are)microparticle bombardmentelectroporationpolyethylene glycol treatmentAgrobacterium-mediated transf...
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100
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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101
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105
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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106
The number of different possible ways of forming five intramolecular disulfide bonds with ten cysteine residues of a protein is ______________.
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109
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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112
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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113
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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114
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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118
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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120
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...