The role of restriction enzyme in recombinant DNA technology is:

Which of the following facts are not true about GM crops ?
(A) They are more tolerant to abiotic stress (cold, drought, heat, salinity, etc.).
(B) They are pest-resistant.
(C) They cause early exhaustion of soil fertility.
(D) The food produced has decreased nutritional value.
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The hormone releasing IUDs function by:

Match List - I with List - II.

List - I (Disease)	List - II (Pathogen)
(A) Amoebiasis	(I) Trichophyton
(B) Ascariasis	(II) Entamoeba histolytica
(C) Elephantiasis	(III) Round worm
(D) Ring Worms	(IV) Wuchereria

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Arrange the steps involved in creating pest-resistant transgenic plants using RNA interference (RNAi).
(A) Binding of complementary RNAs to form double-stranded RNA (dsRNA).
(B) Formation of sense and antisense RNA in the host cells.
(C) Silencing of specific mRNA of the nematode.
(D) Introduction of nematode-specific genes into the host plant using Agrobacterium vectors.
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Which syndrome has karyotype of 45, XO in humans?

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

Bacillus thuringiensis produces proteins (Bt toxin) that kill certain insects. Identify the correct statements.
(A) Bt toxin protein exists as an inactive form (protoxin) in Bacillus thuringiensis.
(B) Bt toxin protein exists as an active form toxin in the insect gut.
(C) The alkaline pH of the gut of an insect solubilize the toxin and converts in an inactive form.
(D) The toxin is coded by a gene crylAc named cry.
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Which of the following does not involve Pt as catalyst?
(A) contact process for making \(H _2 SO _4\).
(B) Ziegler-Nata catalyst.
(C) Adams catalyst, used for reduction.
(D) catalyst to decompose \(KClO _3\) to give \(O _2\).
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A machine costing ₹ \(36000\) has an effective life of 5 years with scrap value of ₹ \( 5000\) following a linear method of depreciation. Which are correct?
(A) The value of the machine after 1 year is ₹ \(31000\)
(B) The value of the machine after 2 years is ₹ \(23600\)
(C) The value of the machine after 3 years is ₹ \(18400\)
(D) The value of the machine after 4 years is ₹ \(11200\)
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Amongst the following, identify the condensation polymer/s:
(A)Bakelite
(B) Teflon
(C) Melamine formaldehyde resin
(D) Nylon-2 nylon-6
(E) Buna-S
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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 of the following technique is not very useful to detect the cancers of internal organs?

An asset costing C is expected to have a useful life of 5 years. If the scrap value of the asset is 3,000 and the annual depreciation charge is 2,400, then the value of C is :