Alien DNA can be introduced into host cells by which of the following:
(A) Biolistics
(B) Micro-injection
(C) Cold-Shock
(D) Heat-Shock
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In amensalism:

Select the incorrect statements with respect to the origin and evolution of man.
A. Ramapithecus was more man like primates
B. Dryopithecus was more ape- like primates
C. Australopithecines probably lived in East Asian grasslands
D. The first human like being the hominid was called Homo habilis
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Match List-l with List-II

List-l (Structure)	List-II (Relation)
(A) Thalamus	(I) Seed
(B) Nucellus	(II) Fruit
(C) Ovule	(III) Germination
(D) Micropyle	(IV) Perisperm

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Which one of the following property is exhibited by Datura plant?

Observe the figure and answer the following:

Match List I with List II

LIST I	LIST II
A. VI	I. Antipodals
B. III	II. Egg cell
C. IV	III. Filliform apparatus
D. I	IV. Central cell

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The Convention on Biological Diversity held in Rio de Janeiro in 1992 is popularly known as

DNA recombinant technology involves the use of restriction endonucleases. After having cloned the gene of interest and having optimised the conditions to induce the expression of the target protein, one has to consider producing it on a large scale. The cells harbouring cloned genes of interest may be grown on a small scale in the laboratory. In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning. In Biolistics or gene gun method cells are bombarded with high velocity micro particles of gold or tungsten coated with DNA. The ligation of alien DNA is carried out at a restriction site present in one of the two antibiotic resistance genes. For example, you can ligate a foreign DNA at the BamH I site of tetracycline resistance gene in the vector pBR322. Since the DNA is enclosed within the membranes, we have to break the cell open to release DNA along with other macromolecules such as RNA, proteins, polysaccharides and also lipids. The RNA can be removed by treatment with ribonuclease whereas proteins can be removed by treatment with protease. Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.
Which one of the following enzymes works as molecular glue?

List-I (Differential equation)	List-II (Integrating factor)
(A) \(x \frac{d y}{d x}-y=2 x^2\)	(I) \(e^{-y}\)
(B) \(\frac{d y}{d x}+\frac{y}{x}=2 x\)	(II) \(\frac{1}{x}\)
(C) \(x \frac{d y}{d x}+2 y=x^2 \log x\)	(III) \(x\)
(D) \(\frac{d x}{d y}-x=y\)	(IV) \(x^2\)

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The integrating factor of the differential equation \(x^2 \frac{d y}{d x}+x y=\log _e x\) is equal to :

A plane meets the coordinates axes at A, B and C such that centroid of \(\triangle A B C\) is at the point (2, 3, 1). If the equation of the plane is 3x + 2y + 6z = k, then k is:

Osmotic pressure measurements are less accurate and difficult to carry out. Therefore, this method is not useful for measuring molecular weights. But it is used to find out molecular weights of polymers eg. plastics, proteins and starch having many monomer units. Knowing the value of osmotic pressure of a given solution, molecular weight of the solute can be calculated using Van't Hoff equation.
A solution which shows deviations from Raoult's law is called:

The corner points of the feasible region determined by the set of constraints (linear inequations) are P(0,5), Q(3, 5), R(5, 0) and S(4, 1) and the objective function z = ax + 2by where a, b > 0 The condition on a and b such that maximum z occurs at Q and S is :