Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules. Reason (R): DNA fragments can be manipulated using restriction endonucleases and DNA ligases.
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The cellular and molecular control of programmed cell death is known as
The cellular and molecular control of programmed cell death is known as
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Consider the following statements with reference to the Periodic Table of chemical elements : I. lonisation potential gradually decreases along a period. II. In a group of elements, electron affinity decreases as the atomic weight increases. III. In a given period, electronegativity decreases as the atomic number increases. Which of these statement(s) is/are correct
Consider the following statements with reference to the Periodic Table of chemical elements : I. lonisation potential gradually decreases along a period. II. In a group of elements, electron affinity decreases as the atomic weight increases. III. In a given period, electronegativity decreases as the atomic number increases. Which of these statement(s) is/are correct ?
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Quartizite is metamorphosed from
Quartizite is metamorphosed from
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Which of the following cell organelles play the most significant role in protein synthesis
Which of the following cell organelles play the most significant role in protein synthesis ?
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An aqueous solution of copper sulphate is acidic in nature because the salt undergoes
An aqueous solution of copper sulphate is acidic in nature because the salt undergoes
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In an atom, the order of filling up of the orbitals is governed by
In an atom, the order of filling up of the orbitals is governed by
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Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons
Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ?
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Which one of the following is NOT radioactive
Which one of the following is NOT radioactive ?
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Which of the following distance-time graph (x – t) represents one-dimensinal uniform motion
Which of the following distance-time graph (x – t) represents one-dimensinal uniform motion?