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Which of the following statement is not ...

Which of the following statement is not correct?

A

Cytosine and thymine are pyrimidines

B

DNA differs from RNA in sugar as well as nitrogenous base

C

In RNA, heterocylic amine base is bonded to C-1' of sugar and the phosphoric acid is bonded to C-5' sugar position

D

In double helix structure of DNA, thymine can bond to cytosine by two hydrogen bonds

Text Solution

Verified by Experts

The correct Answer is:
D
Thymine can bond to adenine by 2 hydrogen bonds.
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MODERN PUBLICATION-BIOMOLECULES-Competition file (OBJECTIVE TYPE QUESTIONS) (A. MULTIPLE CHOICE QUESTIONS)
  1. Night-blindness may be caused by the deficiency of vitamin

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  2. Vitamin A is called:

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  3. The only vitamin with metal atom in it is

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  4. Enzymes are regarded as

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  5. Which of the following B group vitamins can be stored in our body?

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  6. Which of the following hormones is an amino acid derivative?

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  7. The best source of vitamin C is :

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  8. Nucleic acids are polymers of

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  9. The three dimensional structure of DNA was elucidated

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  10. Which of the following bases is not present in DNA

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  11. The chemical change in DNA molecule that could lead to synthesis of pr...

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  12. In nucleic acid, corresponding nucleotides are linked together by -

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  13. The relationship between the nucleotide triplets and the amino acid is...

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  14. Mutation in DNA occurs due to changes in the sequence of

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  15. Chargaff' a rule states that in an organism:

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  16. Which of the following statement is not correct?

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  17. The bond formed as the result of dehydration synthesis reaction betwee...

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  18. The number of hydrogen bonds between adenine and thymine in DNA molcul...

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  19. Which of the following gives maximum energy in metabolic process?

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  20. Phospholipids are esters of glycerol with

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