Arrange the given steps involved in Polymerase Chain Reaction.
(A) Annealing
(B) Extension
(C) Denaturation
(D) Amplification
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During allergic reactions, which of the following are secreted?
(A) Histamines
(B) Interferons
(C) Serotonin
(D) Pyrogens
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Which one of the following regions will have the least number of bird species?

The arrangement of the nuclei in a normal embryo sac from the chalazal to micropylar end in dicots is -

Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Which one of the following is not the cellular barrier of innate immunity?

Match List - I with List - II.

List I	List ll
(A) Cyclosporin - A	(I) Saccharomyces cerevisiae
(B) Statins	(II) Trichoderma polysporum
(C) Streptokinase	(III) Monascus purpureus
(D) Ethanol	(IV) Streptococcus

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Identify the salient features of the genetic code.
A. 60 codons code for amino acids and 4 codons do not code for any amino acids.
B. It is unambiguous and specific
C. The code is degenerate
D. UUU is not a universal code.
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If \(A=\left(\begin{array}{cc}1 & 0 \\ -1 & 7\end{array}\right), I=\left(\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right)\), and \(A^2=8 A+K I\) the value of \(K\) is :

The work function for a metal surface is 8.28 eV . The threshold wavelength for this metal surface is :

Match List I with List II.

List-I (Compounds)	List-II (Oxidation number of Cobalt)
A. \(\left[ Co \left( NH _3\right)_5( NCS )\right] SO _3\)	I. \(+4\)
B. \(\left[ Co \left( NH _3\right)_4 Cl _2\right] SO _4\)	II. \(0\)
C. \(Na _4\left[ Co \left( S _2 O _3\right)_3\right]\)	III. \(+2\)
D. \(\left[ Co _2( CO )_8\right]\)	IV. \(+3\)

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Match the type of hybridisation given in List-I with their geometry given in List-II

List-l (Type of hybridisation)	List-II (Geometry)
(A) \(s p^3\)	(I) Trigonal bipyramidal
(B) \(d s p^2\)	(II) Octahedral
(C) \(s p^3 d\)	(III) Square planar
(D) \(s p^3 d^2\)	(IV) Tetrahedral

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\(\int \sin^3 x dx\) is equal to:

The minimum value of \(\left(x^2+\frac{250}{x}\right)\) is :