DNA Structure & Chromatin — DNA Replication, Repair & Gene Expression

DNA Structure & Chromatin MCQs: practice questions

Sample DNA Structure & Chromatin multiple-choice questions from DNA Replication, Repair & Gene Expression.

1. Which cellular or molecular component/process are present in most human body cells?

   • A. 44 chromosomes
   • B. DNA
   • C. 46 chromosomes
   • D. 92 chromosomes
   • E. 23 chromosomes

2. When comparing nucleic-acid processes, case 11: which option best identifies the component or process responsible for the described function?

   • A. DNA
   • B. chromosome
   • C. lysosome
   • D. vesicle
   • E. ribosome

3. When assessing a DNA-related cellular defect, case 8: which option best identifies the component or process responsible for the described function?

   • A. DNA
   • B. nitrogenous-base core
   • C. lipid bilayer
   • D. protein backbone
   • E. sugar-phosphate backbone

4. Which cellular or molecular component/process have sugar-phosphate backbones oriented in opposite directions?

   • A. antiparallel strands
   • B. single-stranded RNA
   • C. DNA
   • D. parallel strands
   • E. protein chains

5. In a study of gene expression, case 6: which option best identifies the component or process responsible for the described function?

   • A. thymine-guanine pairing
   • B. adenine-cytosine pairing
   • C. DNA
   • D. adenine-uracil pairing
   • E. guanine-cytosine pairing

6. Which cellular or molecular component/process are identical copies of a chromosome produced after DNA replication?

7. When interpreting a cell-biology result, case 5: which option best identifies the component or process responsible for the described function?

8. In a protein-synthesis experiment, case 9: which option best identifies the component or process responsible for the described function?

9. During a laboratory study of human cells, case 1: which option best identifies the component or process responsible for the described function?

10. In a study of cellular inheritance, case 12: which option best identifies the component or process responsible for the described function?

11. During examination of a dividing cell, case 13: which option best identifies the component or process responsible for the described function?

12. When evaluating a gene-expression pathway, case 14: which option best identifies the component or process responsible for the described function?

13. Which cellular or molecular component/process is the combination of DNA and proteins in chromosomes?

14. Which cellular or molecular component/process holds sister chromatids together until their separation during mitosis?

15. Which cellular or molecular component/process is a double helix composed of two polynucleotide strands?

16. In a clinical genetics discussion, case 15: which option best identifies the component or process responsible for the described function?

17. Which cellular or molecular component/process contains phosphate, deoxyribose, and a nitrogen-containing base?

18. Which cellular or molecular component/process is a segment of DNA containing instructions for a product?

19. Which cellular or molecular component/process is the sugar found in DNA nucleotides?

20. Which cellular or molecular component/process is a complementary base pair in DNA?

21. During analysis of chromosome organization, case 7: which option best identifies the component or process responsible for the described function?

22. In a normal eukaryotic cell, case 3: which option best identifies the component or process responsible for the described function?

23. Which cellular or molecular component/process forms the supports of the DNA ladder?

24. Which cellular or molecular component/process is the pyrimidine base present in DNA but replaced by uracil in RNA?

25. Which cellular or molecular component/process is stabilized by hydrogen bonding between complementary DNA bases?

26. During investigation of RNA production, case 10: which option best identifies the component or process responsible for the described function?

27. During examination of genetic material, case 4: which option best identifies the component or process responsible for the described function?

28. Which cellular or molecular component/process hold complementary DNA bases together?

29. When analyzing a molecular-biology experiment, case 2: which option best identifies the component or process responsible for the described function?

30. Which cellular or molecular component/process is a DNA-containing structure that organizes genetic information?