EASY
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In the sugar molecule of nucleotide, at 1-C position which of the following is attached?

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Important Questions on Biomolecules

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
In nucleic acids, the nucleotides are joined together by
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
Insulin and glucagon, which are responsible to maintain the blood glucose level, fall under
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The nitrogenous base present only in RNA is
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Hypothyroidism is caused by the deficiency of
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 of the following bases is not present in DNA?
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 reason for double helical structure of DNA is the operation of :
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
Which one of the following is Nucleic acid chain?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The central dogma of molecular genetics states that the genetic information flows from:
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
Name the process which leads to the formation of RNA from DNA.
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
To which of the following does thymine form hydrogen bonds in DNA?
EASY
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
X-ray studies show that there are approximately amino acids for each turn in the helix.
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?
MEDIUM
Chemistry>Organic Chemistry>Biomolecules>Nucleic Acids
The correct statement regarding RNA and DNA, respectively is: