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The pyrimidine derivative base which is present in only DNA is .

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Important Questions on Biomolecules

MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The correct statement regarding RNA and DNA, respectively is:
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which of the following bases is not present in DNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
To which of the following does thymine form hydrogen bonds in DNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
If one strand of DNA has the sequence ATGCTTGA, the sequence in the complementary strand would be
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
In nucleic acids, the nucleotides are joined together by
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Nucleotides in DNA are linked by
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
X-ray studies show that there are approximately amino acids for each turn in the helix.
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which one of the following bases is not present in DNA ?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The central dogma of molecular genetics states that the genetic information flows from:
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
If one strand of DNA has sequence ATCGTATG, the sequence in the complementary strand would be
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The nitrogenous base present only in RNA is
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The reason for double helical structure of DNA is the operation of :
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which term is used to describe the process by which proteins are synthesised from a genetic code?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which one of the following combinations is found in DNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which base is present in RNA but not in DNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

HARD
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The average energy of each hydrogen bond in A-T pair is x kcalmol-1 and that in G-C pair is y kcalmol-1. Assuming that no other interaction exists between the nucleotides, the approximate energy required in kcalmol-1 to split the following double stranded DNA into two single strands is
Question Image
[Each dashed line may represent more than one hydrogen bond between the base pairs]
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which of the following statements is not true about RNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
What type of sugar molecule is present in DNA?