EASY
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A higher nucleotide is a nucleotide having

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Important Questions on Biomolecules

HARD
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Radioisotopes are frequently used in the study of cellular processes. A culture of Escherichia coli is grown at 37°C in a minimal medium containing radioactive phosphorous. At the end of 48 hours, the amount of radioactivity expected in equimolar quantities of the following macromolecules is
EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Optical activity of DNA is due to its:
EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid

Identify the chemical components of nucleic acid

A) Cysteine
B) Heterocyclic compound
C) Tyrosine
D) Phosphoric acid
E) Ribulose
F) Monosaccharide

EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
The type of bond connecting two nucleotides is
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Write the names of two nucleic acids.
EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
The protein P, the oligosaccharide O, and the oligonucleotide N are composed of 100 amino acid residues, 100 hexose residues and 100 nucleotides, respectively. Which one of the following orders of molecular weights is correct?
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Choose the correct statements:
A) DNA directly codes for the synthesis of proteins
B) DNA and RNA both can function as genetic material
C) DNA is storage of genetic material and RNA transfers genetic information
D) RNA is indirectly codes for the synthesis of protein
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Identify the given structural formulae and select the correct option.
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MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
What are the different types of RNA found in the cell?
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
The three structural formulas A, B and C are given here. Identify them and select the correct option.
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EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
What does A represent in the given diagram of a nucleotide?
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EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
The main difference between DNA and RNA is ____
EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Which molecule bears codons and which molecule anticodons?
EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
How are the two strands of DNA helix held together?
HARD
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Some of the DNA based contents are diagrammatically represented as


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Find the odd one.
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Refer to the given reactions.
(i) Adenine+X→Adenosine
(ii) Adenosine+Y→Adenylic acid
What does X and Y represent here?
MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Given below is the transcribed strand of the DNA duplex : 3´ - TAC CGA TCC GAG CTG – 5´

Construct the complementary DNA polynucleotide chain.

EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid
Which of the following is an incorrect statement?
EASY
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid

Find the correct combination, that can form a nucleotide of RNA.

MEDIUM
Biology>Cell: Structure and Function>Biomolecules>Nucleotides and Nucleic acid

Read the following statements:

(i) The adjacent nucleotides in a nucleic acid are linked by phosphodiester bonds.

(ii) Uracil is not found in DNA.

(iii) B-DNA has left-handed helical structure with 10 base pairs per turn.

(iv) Pyrimidines are double-ring structures with four nitrogen atoms.

Which of the above statements are correct?