Biology Crossword

2. second stage of mitosis in which motor proteins pull sister chromatids to the cell´s equator
6. thrid main stage of the cell cycle, during which the cell´s cytoplasm divides, creating a new cell.
8. cancer-causing substance.
9. relaxed form of DNA in a nucleus of a cell
10. process of cellular reproduction, occurring in three main stages-interphase(growth), mitosis(nuclear division), and cytokinesis(cytoplasm division)
11. first stage of mitosis, during which the cell´s chromatin condenses into chromosomes.
13. last stage of mitosis in which nucleoli reappear. two new nuclear membranes begin to form, but the cell has not yet completely divided.
14. uncontrolled growth and division of cells that can be caused by changes in control of the cell cycle and also may be caused by environmental factors.
16. first stage of the cell cycle, during which a cell grows, matures and replicates its DNA.
17. stricture that contains identical DNA copies and is formed during DNA replication

1. cell structure that joins two sister chromatids.
3. unspecialized cell that can develop into a specialized cell under the right conditions.
4. programmed cell death.
5. thrid stage of mitosis in which sister chromatids are pulled apart and microtubes, along with motor proteins, move the chromosomes to opposite poles of the cell.
7. structure is made of spindle fibers, centrioles, and aster fibers that are involved in moving and organizing chromosomes before the cell divides.
12. second main stage of the cell cycle during which the cell´s replicated DNA divides and two genetically identical diploid daughter cells are produced.
15. DNA-containing structure that carries genetic materal from one generation to another.
18. one of the specific proteins that regulate the cell cycle