Which was the first restriction endonuclease discovered?

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Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. Sustained high fever (39° to 40°C), weakness, stomach pain, constipation, headache and loss of appetite are some of the common symptoms of this disease. Typhoid fever could be confirmed by Widal test. Plasmodium enters the human body as sporozoites. The parasites initially multiply within the liver cells and then attack the red blood cells (RBCs) resulting in their rupture. The rupture of RBCs is associated with release of a toxic substance, haemozoin, which is responsible for the chill and high fever recurring every three to four days. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa-associated lymphoid tissue (MALT). In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant. Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain. Generally taken by inhalation and oral ingestion, these are known for their effects on cardiovascular system of the body.
The rupture of RBCs is associated with release of a toxic substance__________, which is responsible for the chill and high fever recurring every three to four days.

Malignant malaria is caused by -

The rate of biomass production is called productivity and it is expressed in terms of:

Net primary productivity is the:

Match List - I with List - II.

List - I	List - II
(A) Australian marsupials	(I) Homologous organs
(B) Wings of butterfly and wings of a bird	(II) Natural selection
(C) Industrial melanism	(III) Adaptive radiation
(D) Forelimbs of Horse and Bat	(IV) Analogous organs

Match List - I with List - II.

List - I	List - II
(A) Aspergillus niger	(I) Butyric acid
(B) Saccharomyces cerevisiae	(II) Citric acid
(C) Clostridium butylicum	(III) Lactic acid
(D) Lactobacillus	(IV) Ethanol

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Which of the following are not associated to Lac Operon?
(A) Lysozyme
(B) ß-galactosidase
(C) Chitinase
(D) Transacetylase
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Silicon can be doped to get an n-type semiconductor by using :
(A) Arsenic (As)
(B) Phosphorus (P)
(C) Boron (B)
(D) Antimony (Sb)

Kohlrausch's law is used for the determination of
(A). Molar conductivity of a weak electrolyte.
(B). Degree of dissociation of a weak electrolyte.
(C). Dissociation constant.
(D). Solubility of sparingly soluble salts.
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Which of the following techniques are used for early diagnosis of diseases?
(A). Urine analysis
(B). PCR
(C). ELISA
(D). Recombinant DNA technology (RDT)
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In the 3d series of transition elements, the element more likely to exhibit +1 oxidation state is :

Match List I with List II

List - I (Organism)	List - II (Product)
(A) Streptococcus	(I) Citric acid
(B) Aspergillus niger	(II) Streptokinase
(C) Monascus purpureus	(III) Ethanol
(D) Saccharomyces cerevisiae	(IV) Statin

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