Bt toxin produced by Bacillus thuringiensis is resistant to :

Identify the correct sequence of events during the menstrual cycle in female.
(A) Next cycle begins
(B) Proliferative phase
(C) Menstruation
(D) Secretory phase
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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?

The enzyme that can recognise the following palindromic sequence
'5-GAATTC-3'
3'-CTTAAG-5' is _________ :

How many episodes of mass extinctions of species have occurred on earth since the origin and diversification of life?

Identify the hormone releasing IUDs -

Match List - I with List - II.

LIST I	LIST II
A. Structural genes in eukaryotes	I. Polycistronic
B. The coding sequence that appear in mature RNA	II. Monocistronic
C. Structural genes in Prokaryotes	III. Intron
D. Sequences not present in processed RNA	IV. Exons

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Antibody molecule is made up of four peptide chain called as light and heavy chain are joined together by :

Choose the examples of first order reactions.
(A) Artificial radioactive decay of unstable nuclei
(B) Hydrogenation of ethylene
(C) Thermal decomposition of HI on gold surface
(D) Decomposition of N2O
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If the points \((2,1),(-1,4)\) and \((a, 3)\) are collinear then the value/(s) of a is/(are) :

Two solenoids of equal number of turns having their lengths and radii in the same ratio \(1: 3\). The ratio of their self inductances \(L _{ 1 }: L _{ 2 }\) will be :

For a \(3 \times 3\) matrix \(A=\left[a_{i j}\right]\), whose element \(a_{i j}\) is given by \(a_{i j}=\sqrt{i^2+3 j}\), then what is element \(a_{31}\) ?

Consider the differential equation \(x d y=\left(y+2 x^3\right) d x\). Then which of the following are TRUE?
(A) It is a homogeneous differential equation.
(B) Product of the order and degree of the differential equation is one.
(C) Integrating factor is \(x\).
(D) General solution of the differential equation is \(y=x^3+C x\), where \(C\) is an arbitrary constant.
Choose the correct answer from the options given below :