Across
- 2. The disease caused by an uncontrolled division of abnormal cells in a part of the body.
- 3. A minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers.
- 5. Factor A group of external regulators that stimulate growth, embryonic developement and healing.
- 6. A state of early development of mamals that consists of an empty ball of cells.
- 7. The material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed; small, thin strands.
- 8. A threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of DNA.
- 9. The second stage of cell division during which the chromosomes line up along the equator of the cell, and become attached to the spindle fibers.
- 10. Capable of giving rise to several different cell types.
- 12. A swelling or enlargement of a part of the body, generally due to uncontrolled cell growth, whether benign or malignant.
- 14. The normal process by which a less specialized cell develops or matures to become more distinct in form and function.
- 17. An unborn or unhatched offspring in the process of development.
- 21. The chromatids gather at either end of the cell and two new nuclear membranes begin to form.
- 22. reproduction Production of new living organisms by combining genetic information from two individuals of different types.
- 23. The sister chtomstids separate and are pulled apart.
Down
- 1. Cycle The cell cycle, or cell-division cycle, is the series of events that takes place in a cell leading to its division.
- 2. Each of the two threadlike strands into which a chromosome divides.
- 3. The point on a chromosome by which it is attached to a spindle fiber during cell division.
- 4. A type of cell death in which the cell uses specialized cellular signals to kill itself.
- 7. The cytoplasmic division of a cell at the end of mitosis.
- 9. Having the ability to differentiate to a limited number of cell types or into a closely related family of cells.
- 11. The resting phase between successive mitotic divisions of a cell; the cell preformes its specialized function in this phase.
- 13. Reoroduction Reproduction without the fusion of gametes; reproduction of exact genetic coppies with one parent organism.
- 15. Capable of giving rise to any cell type.
- 16. The first stage of cell division, during which the chromosomes become visible as paired chromatids and the nuclear membrane disolves.
- 18. The dividing of a cell; consists of 5 phases.
- 19. Cell An undifferentiated cell of a multicellular organism that is capable of giving rise to indefinitely more types of cells; the first few cells in all mammals.
- 20. Any of a number of proteins associated with the cycle of cell division that are thought to initiate certain processes of mitosis.