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CELL CYCLE TEST REVIEW PAP Biology 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. List the three parts of a nucleotide (the monomer of DNA). Which two parts make up the backbone of DNA? What are the base pairing rules for the nitrogen bases? What type of bond holds the N-bases together? What is helicase? What is DNA polymerase? When and why does DNA replication occur in the cell cycle? Which two scientists are credited with the discovery of the structure of DNA? List the phases in the correct sequence of the cell cycle beginning with G1 of interphase. Draw and describe what is happening in each phase. Which phase occupies most of the cell’s life? Compared to the parent cell, how many chromosomes are in each daughter cell after it divides by mitosis? What is a cleavage furrow and when does it form? What is the purpose of checkpoints in the cell cycle? Describe cancer cells.