DNA discovered
  • 1. Who discovered the structure of DNA?
A) Charles Darwin
B) Rosalind Franklin
C) James Watson and Francis Crick
D) Gregor Mendel
  • 2. In which year was the structure of DNA discovered?
A) 1972
B) 1945
C) 1960
D) 1953
  • 3. What is the full form of DNA?
A) Double Nucleic Acid
B) Deoxyribonucleotide Acid
C) Deoxyribonucleic Acid
D) Dinucleic Acid
  • 4. The shape of the DNA molecule is most commonly described as?
A) Spiral
B) Linear
C) Triple Strand
D) Double Helix
  • 5. Which base pairs with Adenine in a DNA molecule?
A) Uracil
B) Thymine
C) Cytosine
D) Guanine
  • 6. DNA is located in which part of a eukaryotic cell?
A) Endoplasmic Reticulum
B) Nucleus
C) Cytoplasm
D) Mitochondria
  • 7. Which technique was crucial in determining the structure of DNA?
A) Electrophoresis
B) Chromatography
C) Microscopy
D) X-ray crystallography
  • 8. Which of the following is a purine base in DNA?
A) Guanine
B) Uracil
C) Cytosine
D) Thymine
  • 9. Which nitrogenous base replaces thymine in RNA?
A) Adenine
B) Uracil
C) Cytosine
D) Guanine
  • 10. What is the primary function of DNA?
A) To store and transmit genetic information
B) To regulate cellular processes
C) To synthesize proteins
D) To provide energy to cells
  • 11. How many hydrogen bonds are there between Adenine and Thymine in a DNA molecule?
A) Four
B) Two
C) Three
D) One
  • 12. What is the term for the process of making an RNA copy of a gene sequence?
A) Translation
B) Transcription
C) Replication
D) Mutation
  • 13. What is the enzyme responsible for adding telomeric repeats to the ends of chromosomes?
A) DNA ligase
B) Telomerase
C) DNA polymerase
D) Helicase
  • 14. Which of the following diseases is associated with a mutation in the DNA repair gene BRCA1?
A) Sickle cell anemia
B) Huntington's disease
C) Cystic fibrosis
D) Breast cancer
  • 15. What is the term for a change in the DNA sequence that leads to a different protein being produced?
A) Insertion
B) Mutation
C) Translocation
D) Deletion
  • 16. What is the term for the process of cutting DNA into smaller fragments using restriction enzymes?
A) Gel electrophoresis
B) Restriction digestion
C) DNA ligation
D) Polymerase chain reaction
  • 17. Who helped Watson and Crick with X-ray diffraction data of DNA?
A) Marie Curie
B) Rosalind Franklin
C) Gregor Mendel
D) Charles Darwin
  • 18. What holds the two strands of DNA together?
A) Van der Waals Forces
B) Hydrogen Bonds
C) Covalent Bonds
D) Ionic Bonds
  • 19. What is the process by which DNA makes an exact copy of itself?
A) Mutation
B) Translation
C) DNA Replication
D) Transcription
  • 20. What enzyme is responsible for unwinding the DNA double helix during replication?
A) Ligase
B) Polymerase
C) Helicase
D) Primase
  • 21. In a DNA molecule, which nitrogenous base pairs with guanine?
A) Cytosine
B) Thymine
C) Uracil
D) Adenine
  • 22. Which technique is used to amplify a specific segment of DNA?
A) Gel Electrophoresis
B) PCR (Polymerase Chain Reaction)
C) Southern Blotting
D) DNA Sequencing
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