Which of the following is/are NOT the way(s) to introduce alien DNA into the host cell?
(A) Using vectors like Agrobacterium tumifaciens
(B) Injecting directly into the nucleus of animal cell
(C) Using ethylene dibromide
(D) Using vectors like retroviruses
(E) Using biolistics or gene gun
Choose the correct answer from the options given below:

Match List-I with List-II

List-I (Geological periods)	List-II (Plants evolved)
(A) Devonian	(I) Gnetales
(B) Carboniferous	(II) Cycads
(C) Jurassic	(III) Seed ferns
(D) Cretaceous	(IV) Progymnopserms

Choose the correct answer from the options given below:

Which of the following bond in DNA strand is broken by the action of restriction enzyme?

The enzyme used to release DNA from bacterial cell is :

Which one of the following regions will have the least number of bird species?

Arrange the following steps involved in Recombinant DNA Technology in correct sequence.
(A) Insertion of recombinant DNA into host cell/organism
(B) Cutting of source DNA as well as vector DNA at specific location and their joining
(C) Isolation of the genetic material (DNA)
(D) Obtaining the foreign gene product
(E) Culturing transformed host cells at large scale
Choose the correct answer from the options given below :

Read the passage carefully and answer the questions given along
Our immune system plays the major role in preventing diseases when we are exposed to disease-causing agents. Immunity is of two types: (i) Innate immunity and (ii) Acquired immunity. The human immune system consists of lymphoid organs, tissues, cells and soluble molecules like antibodies. The immune system also plays an important role in allergic reactions, auto-immune diseases and organ transplantation. The primary lymphoid organs are bone marrow and thymus. The secondary lymphoid organs are spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa associated lymphoid tissue (MALT). It is important to note that HIV/AIDS is not spread by mere touch or physical contact; it spreads only through body fluids. AIDS has no cure, prevention is the best option. Adolescence is accompanied by several biological and behavioural changes and surveys and statistics show that use of drugs and alcohol has been on the rise especially among the youth. Factors associated with drug and alcohol abuse among adolescents are a child's natural curiosity, stress, the perception among youth that it is 'cool' or progressive to smoke, media exposure and an unstable or unsupportive family structures and peer pressure. It is best to identify the situations that may push an adolescent towards use of drugs or alcohol, and to take remedial measures well in time.
Find the incorrect statement about human health and disease.

A book consisting of 2000 pages has 540 misprints distributed randomly throughout the book. The average number of misprints in one page of the book is:

The interval in which \(f(x)=\sin x-\cos x, 0 \leq x \leq 2 \pi\) is strictly decreasing is:

Let the random variable \(X\) represent the positive difference between the number of heads and the number of tails obtained when a coin is tossed 6 times. Then probability \(P ( X \leq 3)\) is equal to.

Match List-l with List-II

List-l (Scientists)	List-II (Discoveries)
(A) Frederick Griffith	(I) Genetic Code
(B) Francois Jacob and Jacque Monad	(II) Semi-conservative mode of DNA replication
(C) Har Gobind Khorana	(III) Transformation
(D) Meselson and Stahl	(IV) Lac operon

Choose the correct answer from the options given below:

The function \(f(x)=4-3 x+3 x^2-x^3\) is (Here \(R\) is the set of real numbers)

An a.c. voltage source of fixed amplitude \( E_0 \) and variable angular frequency \( \omega \) is connected with an electric bulb of resistance R (inductance zero) and a capacitor of capacitance C in series. On increasing the angular frequency of the source, the total impedance of the circuit