MCQ on Nucleotide: Biology is one of the most important and vital sections in NEET. It includes theories, descriptions, discoveries, diagrams, definitions, explanation of differences and relations. Most of the concepts covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12. Other related sources make up for the rest of the syllabus.

In this post we are providing you MCQ on Nucleotide, which will be beneficial for you in upcoming NEET, AIIMS, JIPMER, PGIMER, CBSE Board, ICSE Board, Class 12th, 11th.

MCQ on Nucleotide

Q1. The sugar molecule present in nucleotide is ______.
a) triose
b) tetrose
c) pentose
d) hexose

Q2. A DNA segment contains 100 Adenine and 100 cytosines, how many nucleotides are present in the segment?
a) 100
b) 200
c) 400
d) 50

Q3. A phosphodiester bond is present in ______.
a) Nucleic acids in a nucleotide
b) Monosaccharides in a polysaccharide
c) Amino acids in a polypeptide
d) Fatty acids in a diglyceride

Q4. ATP is a ______.
a) nucleoside
b) nucleotide
c) vitamin
d) nucleic acid

Q5. Find the correct statement about phosphodiester linkage between adjacent nucleotides in nucleic acids.
a) 3’-phosphate of one nucleotide joins the 3’-hydroxyl of the next nucleotide
b) 3’-phosphate of one nucleotide joins the 5’-hydroxyl of the next nucleotide
c) 5’-phosphate of one nucleotide joins the 5’-hydroxyl of the next nucleotide
d) 5’-phosphate of one nucleotide joins the 3’-hydroxyl of the next nucleotide

Q6. Which of the following nucleotide contains only ribose sugar and not deoxyribose?
a) Thymine – pentose sugar-phosphate
b) Uracil – pentose sugar-phosphate
c) Thymine – pentose sugar-phosphate
d) Cytosine – pentose sugar-phosphate

Q7. Uridine present in RNA is ______.
a) nucleotides
b) pyrimidine
c) purine
d) nucleoside

Q8. Purine base found in RNA is ______.
a) Cytosine
b) Thymine
c) Guanine 
d) Uracil

Q9. Nucleic acids are a polymer of nucleotide monomeric units. Each nucleotide consists of ______.
a) base­-sugar-­OH
b) sugar-­phosphate
c) base­-sugar-­phosphate
d) (base­-sugar­-phosphate)x

Q10. Nucleoside contains ______.
a) base-sugar
b) base-phosphate
c) base-sugar-phosphate
d) sugar-phosphate

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