EASY
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Two nucleotides are joined together by a linkage known as :

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Important Questions on Biomolecules

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]
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
If one strand of DNA has sequence ATCGTATG, the sequence in the complementary strand would be
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which one of the following is Nucleic acid chain?
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
Which of the following bases is not present in DNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Name the process which leads to the formation of RNA from DNA.
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The sequence of bases on RNA molecule synthesize on the GCATA strand of DNA is
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The reason for double helical structure of DNA is the operation of :
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which of the following statements is not true about RNA?
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
The central dogma of molecular genetics states that the genetic information flows from:
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which term is used to describe the process by which proteins are synthesised from a genetic code?
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids

Match the following

  List-I   List-II
(A) Adenine (I) Question Image
(B) Guanine (II) Question Image
(C) Thymine (III) Question Image
(D) Cytosine (IV) Question Image

 

EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
In Nucleic acids the nucleotides are linked by
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The base present in RNA, but not in DNA is
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which one is a purine base?
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The transfer RNA anticodon for the messenger RNA codon G-C-A is
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
What type of sugar molecule is present in DNA?
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The correct statement regarding RNA and DNA, respectively is: