Unit 3 Vocabulary

6. a form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
7. division of the cytoplasm during cell division
9. series of events that cells go through as they grow and divide
13. 4th phase of cell division. the chromosomes become longer, thinner, and less distinct. the nuclear membrane forms. The nucleolus reappears and cell division is nearly complete
14. a reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents
19. a protein that catalyzes (speeds up) a reaction without being changed by it
20. cells that are able to develop into any type of cell found in the body.
21. cells that are capable of developing into most, but not all, of the body's cell types
22. chromosomes become visible, nuclear envelope dissolves, spindle forms
23. chromosomes line up in the middle of the cell
24. period of the cell cycle between cell divisions
25. unspecialized cells that retain the ability to become a wide variety of specialized cells

1. cell organelle that aids in cell division in animal cells only
2. proteins that regulate the cell cycle
3. mass of rapidly dividing cells that can damage surrounding tissue
4. cell elongates and sister chromatids are pulled apart toward the poles
5. a reproductive process that involves only one parent and produces offspring that are identical to the parent.
8. stage of early development in mammals that consists of a hollow ball of cells
10. one of two identical "sister" parts of a duplicated chromosome
11. part of eukaryotic cell division during which the cell nucleus divides
12. programmed cell death
15. threadlike structures made of DNA molecules that contain the genes
16. granular material visible within the nucleus; consists of DNA tightly coiled around proteins
17. cell with limited potential to develop into many types of differentiated cells
18. area where the chromatids of a chromosome are attached