Which of the following is NOT a step of decomposition process?

The first clinical gene therapy was given to treat :

Arrange the following steps for replication of HIV in a correct sequence:
A. Production of new viral RNA by infected cell.
B. Infection of normal cell by virus
C. Production of viral DNA
D. Production of new viruses
Choose the correct answer from the options given below

Read the following paragraph carefully and answer the given questions.
In the year 1963 the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. The first restriction endonuclease - Hind II, whose functioning depended on a specific DNA nucleotide sequence was characterized five years later. It was found that Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II. Besides Hind II, today we know more than 900 restriction enzymes that have been isolated from over 230 strains of bacteria, each of which recognize different recognition sequences.
When DNA from different sources is cut by the same restriction enzymes, the resultant DNA fragments have the :

Which of the following is a man-made ecosystem?

Select the observations drawn from the human genome project which are correct.
(A) The human genome contains 3164.7 million bp.
(B) The average gene consists of 3000 bases.
(C) Total number of genes is estimated at 30,000.
(D) The functions are unknown for over 50% of discovered genes.
(E) Less than 2% of the genome codes for proteins.
Choose the correct answer from the options given below:

Match List I with List - II. -

List - l	List - II
(A) Colostrum	(l) T-lymphocyte
(B) Histamine	(II) Preformed antibodies
(C) Passive immunisation	(III) Yellowish fluid
(D) Cell-mediated immunity	(IV) Mast cell

Choose the correct answer from the options given below :

A charged particle is moving in a cyclotron. What is the effect on time for one revolution of this charged particle, when its radius of the orbit is doubled?

"Wood spirit " is

If \(\sin ^{-1} x+\sin ^{-1} y=\frac{2 \pi}{3}\), then the value of \(\cos ^{-1} x+\cos ^{-1} y\) is :

By increasing the temperature, resistivity of a conductor and a semiconductor

A double convex lens of refractive index 1.5 has a radius of curvature R each. The focal length of the lens is

Two light beams of intensities in the ratio 25:9 are allowed to interfere. The ratio of the intensities of maxima and minima will be