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