NEET Chemistry Nucleic Acids MCQ Question
Which of the following combinations about nucleic acids is correct?
DNA contains uracil, RNA contains thymine.
Nucleotides are linked by phosphodiester bonds between 5' and 3' carbons.
Nucleosides consist of a base attached to a phosphate group.
RNA and DNA both contain the same four nitrogenous bases.
Correct Answer
Detailed Explanation
Nucleotides are indeed joined together by phosphodiester linkage between the 5' and 3' carbon atoms of the pentose sugar. DNA contains thymine, while RNA contains uracil, making options A and C incorrect. Option D is also incorrect as RNA has uracil instead of thymine.
Found an issue with this question?
Related Questions
More from Nucleic Acids
Assertion (A): DNA contains the base thymine, while RNA contains the base uracil. | Reason (R): Thymine and uracil are structurally identical, allowin...
Which of the following bases is found in RNA but not in DNA?
Match Column-I with Column-II. Column-I Column-II (a) DNA (i) Involved in protein synthesis (b) RNA (ii) Carries genetic inform...
More from
What type of carbohydrate is cellulose?
Match Column-I with Column-II. Column-I Column-II (a) Lactose (i) Non-reducing sugar (b) Starch (ii) Reducing sugar (c) Sucrose (...
If a student takes vitamin supplements without a doctor's advice and ends up with an excess of fat-soluble vitamins, which of the following vitamins i...