Molecular biology objective questions below can help students evaluate their knowledge on molecular biology. Answers are also given for molecular biology MCQ with answers PDF download to help you remember. Try our molecular biology MCQ with answers PDF download to see if you can get all the answers right for the questions below.
Molecular Biology Objective Questions
Molecular Biology is the study of the composition, structure, and interactions of biological components such as nucleic acids and proteins is known as molecular biology.
Molecular Biology MCQ with Answers PDF Download
1. LINES and SINES come under ———- DNA
Single copy DNA
Moderatively repetitive DNA
Simple sequence DNA
RNA
2. What is the difference between II S & II R strains of bacteria in Griffith’s experiment?
III S strain covers itself with a polysaccharide coat
III S strain covers itself with a protein coat
II R strain covers itself with a protein coat
II R strain covers itself with a polysaccharide coat
3. Avery, Macleod and McCarty’s experiment was conducted in the year
1928
1974
1964
1938
4. To explore the genetic properties of DNA Hershey and Chase used
Bacteria
Bacterial Viruses
Fungi
Dog
5. Conjugation was discovered by
Zinder and Ledenberg
Lederberg and Tatum
Frederick Griffith
Hershey and Chase
6. In conjugation the integration of F factor is mediated by
Transposon
Is Elements
Viruses
Simple Sequence DNA
7. The DNA in the chromatin is very tightly associated with proteins called
Albumin
Globulin
Myosin
Histones
8. The molecular weight of histones is
Between 11,000 and 21,000
Between 1,000 and 11,000
Between 8,000 and 20,000
Between 1,000 and 31,000
9. Histones are very rich in
Acidic amino acids
Basic amino acids
Neutral amino acids
Aromatic amino acids
10. Number of amino acids in H4 histones is
104
108
102
120
11. The bead of each nucleosome contains
Eight histone molecules
Ten histone molecules
Two histone molecules
Nine histone molecules
12. The number of base pairs serves as linker DNA between nucleosome beads is
200 bp
146bp
54 bp
45 bp
13. The spacing of the nucleosome beads provides a repeating unit typically of about
200 bp
146bp
54bp
45bp
14. The total number of base pairs bound tightly around the eight-part histone core are
200 bp
146 bp
54 bp
45 bp
15. X-ray diffraction analysis of nucleosome reveals that it is a
Left-Handed Solenoidal Supercoil
Right-Handed Solenoidal Supercoil
Left Handed Double Helical Supercoil
Right Handed Double Helical Supercoil
Answers
Moderatively repetitive DNA
III S strain covers itself with a polysaccharide coat
1974
Bacterial Viruses
Lederberg and Tatum
Is Elements
Histones
Between 11,000 and 21,000
Basic amino acids
102
Eight histone molecules
54 bp
200 bp
146 bp
Left-Handed Solenoidal Supercoil
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