Read the paragraph given below and answer the question.
Insulin used for diabetes was earlier extracted from slaughtered cattle and pigs. Insulin from an animal source, though caused some patients to develop allergy or other type of reactions. Insulin consists of two short polypeptide chains: chain A and chain B, that are linked bridges. In mammals, including human, insulin is synthesised as a pro-hormone.
Insulin is synthesised as in mammals.

The symptoms of Elephantiasis :
(A) Inflammation of lower limb
(B) Scaly lesions on scalp
(C) Anaemia and blockage of intestinal passage
(D) Gross deformities of genital organs
Choose the correct answer from the options given below :

Read the following passage carefully.
Restriction enzyme
Restriction enzymes cut the strand of DNA a little away from the center of the palindrome sites, but between the same two bases on the opposite strands. This leaves single stranded portions at the ends. There are overhanging stretches called sticky ends on each strand. These are named so because they form hydrogen bonds with their complementary cut counterparts. This stickiness of the ends facilitates the action of the enzyme DNA ligase. The word palindromes refer to group of letters that forms the same words when read both forward and backward. Restriction endonucleases are used in genetic engineering as molecular scissors.
Which bond forms on sticky end of each strand?

If primary producers are exposed to 1,000,000 Joules of sunlight, the amount of energy transferred to tertiary consumers will be:

Two closely related species can co-exist indefinitely and violate the Gause's 'Competitive Exclusion Principle' by:

Arrange the following steps of the Hershey and Chase experiment in correct sequence:
(A) Labelling of some bacteriophages with radioactive phosphorus and some with radioactive sulfur.
B) Agitating in blender followed by centrifugation.
(C) Infecting E. coli in two batches with two differently labelled bacteriophages.
(D) Identification of radioactivity in supernatant and sediment
Choose the correct answer from the options given below:

Read the following passage carefully and answer the given questions.
The B-lymphocytes produce an army of proteins in response to pathogens. Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Symptoms of allergic reactions include sneezing, watery eyes, running nose and difficulty in breathing. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy.
Lymphoid organs are the organs where origin and/or maturation and proliferation of lymphocytes occur. The primary lymphoid organs are bone marrow and thymus. After maturation the lymphocytes migrate to secondary lymphoid organs like spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. Heroin commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine, which is extracted from the latex of poppy plant Papaver somniferum.
Which one of the following organs is not a secondary lymphoid organ in humans?

A person can sell a maximum of 20 units of shirts and pants on which a profit of ₹40 is made on each shirt and a of ₹30 on each pant. A minimum of 2 shirts are being sold, while pants are sold at least 4 times as many as shirts the maximum profit is:

Match List - I with List - II.

List 1	List 2
(A) Infra red waves	(I) to detect fracture of bones
(B) Radio waves	(II) absorbed by the ozone layer of atmosphere
(C) X-rays	(III) to treat muscular pain
(D) Ultraviolet rays	(IV) for broadcasting

Choose the correct answer from the options given below :

If \(P\left[\begin{array}{lll}1 & 2 & 3 \\ 4 & 5 & 6\end{array}\right]=\left[\begin{array}{ccc}-7 & -8 & -9 \\ 2 & 4 & 6\end{array}\right]\), then matrix \(P\) is equal to :

In a hydrogen atom, an electron moves in an orbit of radius \( 5 \times 10^{-11} \text{ m} \) with a speed of \( 2.2 \times 10^6 \text{ m/s} \). The equivalent current is

Observe the figure and answer the following:


Identify the true statements:
A. Stable genetic equilibrium results in evolution
B. Genetic equilibrium means the constant gene pool in population remains constant
C. In a given population one can find out the frequency of occurrence of alleles of a gene or a locus
D. The frequency of occurrence of alleles of a gene remain same through generations
Choose the correct answer from the options given below:

At sunrise and sunset the sun appears reddish due to