Question

directions: match the events with the correct phase they occur in.
a. interphase b. prophase c. metaphase
d. anaphase e. telophase f. cytokinesis

1. the spindle fibers pull the sister chromatids to the opposite sides of the cell.
2. the nuclear envelope begins to disintegrate.
3. a new nuclear membrane forms around the chromosomes at both ends of the cell.
4. the cytoplasm of the cell is being divided.
5. the chromosomes line up along the equator (middle) of the cell.
6. the division (cleavage) furrow appears.
7. the chromosomes are moving towards the poles (ends) of the cell.
8. spindle fibers are formed.
9. spindle fibers attach to the centromeres of the chromosomes lined up along the equator (middle) of the cell.
10. chromosomes are replicated.
11. the organization/growth phase.
12. chromatin condenses into chromosomes.

Explanation:

• 1: Anaphase is when sister chromatids are pulled apart by spindle fibers to opposite sides of the cell.
• 2: In prophase, the nuclear envelope begins to disintegrate.
• 3: Telophase is characterized by the formation of a new nuclear membrane around chromosomes at cell ends.
• 4: Cytokinesis is the process where the cytoplasm of the cell is divided.
• 5: Metaphase has chromosomes line up along the equator (middle) of the cell.
• 6: The division (cleavage) furrow appears during cytokinesis in animal cells.
• 7: Anaphase also involves chromosomes moving towards the poles (ends) of the cell.
• 8: Spindle fibers are formed in prophase.
• 9: In metaphase, spindle fibers attach to the centromeres of chromosomes lined up along the equator.
• 10: Chromosomes are replicated in interphase.
• 12: Interphase is the organization/growth phase.
• 13: Chromatin condenses into chromosomes in prophase.

Answer:

1. D. Anaphase
2. B. Prophase
3. E. Telophase
4. F. Cytokinesis
5. C. Metaphase
6. F. Cytokinesis
7. D. Anaphase
8. B. Prophase
9. C. Metaphase
10. A. Interphase
11. A. Interphase
12. B. Prophase