James Watson and Francis Crick Multiple Choice Questions and Answers for Practice

16. What type of bonds hold the base pairs together in DNA?

1. Covalent bonds
2. Hydrogen bonds
3. Ionic bonds
4. Metallic bonds

17. What was the title of Watson’s book about the discovery of DNA?

1. The Double Helix
2. DNA: A New Frontier
3. Cracking the Code
4. Genes and Us

18. What discovery technique was key to the DNA model?

1. X-ray diffraction
2. Gel electrophoresis
3. PCR
4. Centrifugation

19. What kind of molecule is DNA?

1. Protein
2. Carbohydrate
3. Nucleic acid
4. Lipid

20. What is the full form of DNA?

1. Deoxyribonucleic acid
2. Dicarboxylic nucleic acid
3. Deoxyribose nitrogen acid
4. Deoxyribose nucleotide acid

21. Which Nobel category did Watson and Crick win?

1. Physics
2. Chemistry
3. Medicine
4. Peace

22. What does DNA store in cells?

1. Energy
2. Genetic information
3. Proteins
4. Carbohydrates

23. What shape did Watson and Crick describe DNA as?

1. Double helix
2. Single strand
3. Triple helix
4. Quadruple helix

24. Which scientist initially proposed a triple helix structure for DNA?

1. Linus Pauling
2. Francis Crick
3. Rosalind Franklin
4. James Watson

25. How many strands make up the DNA double helix?

1. 1
2. 2
3. 3
4. 4

26. Watson and Crick used data from which scientist without direct permission?

1. Rosalind Franklin
2. Erwin Chargaff
3. Maurice Wilkins
4. Linus Pauling

27. What is the significance of complementary base pairing in DNA?

1. Provides stability
2. Allows replication
3. Enables translation
4. Inhibits mutation

28. Which sugar is found in DNA?

1. Glucose
2. Ribose
3. Deoxyribose
4. Sucrose

29. Watson and Crick’s model of DNA helped explain which cellular process?

1. Mitosis
2. Genetic replication
3. Protein degradation
4. Lipid synthesis

30. What was one of Watson and Crick’s key insights about DNA?

1. It is circular
2. It is self-replicating
3. It has identical strands
4. It lacks directionality