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(A) Adenine pairs up with thymine but no...

(A) Adenine pairs up with thymine but not with cytosine.
(R) With cytosine, no hydrogen bonds are possible for adenine.

A

Both A & R are true, R is the correct explanation of A

B

Both A & R are true, R is not correct explanation of A

C

A is true, R is false

D

A is false, R is true

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-BIOMOLECULES-OBJECTIVE EXERCISE - 1
  1. Synthesis of identical copies of DNA is called

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  2. (A) Guanine unites with Cytosine but not with Thymine. (R) Guanine a...

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  3. (A) Adenine pairs up with thymine but not with cytosine. (R) With cy...

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  5. (A) The pyrimidine base thymine is present in RNA. (R) DNA controls ...

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  6. (A) The simplest alpha -amino acid is optically inactive. (R) Simple...

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  7. (A) The folding of polypeptide chains leads to globular proteins. (R...

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  8. (A): All DNA and RNA molecules contain adenine, guanine and cytosine b...

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  9. (A) Enzymes are globular proteins. (R) Enzymes provide active site t...

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  10. Water soluble vitamins are

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  11. Which of the following is not a source of vitamina-A

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  13. The chief source of vitamin D is

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  14. Antiricketic Vitamin is

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  15. Dificiency of Vitamin E leads to

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  16. In all green leaves and vegetables which of the following vitamin is a...

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  17. Which of the following vitamin is Naphtha-quinone derivative ?

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  18. Anti haemorrhagic vitamin is

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  19. Deficiency of Vitamin B(12) leads to

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  20. The following vitamin plays a role in transportation of amino acids ac...

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