BIOLOGY UNIT 5 VOCABULARY

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Across
  1. 7. threadlike structure within the nucleus that contains genetic information that is passed on from one generation to the next
  2. 11. type of reproduction in which cells from two parents unite to form the first cell of a new organism
  3. 12. period of the cell cycle between cell divisions
  4. 15. division of the cytoplasm to form two separate daughter cells
  5. 17. substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones
  6. 18. treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing
  7. 19. phase of mitosis in which the chromosomes line up across the center of the cell
  8. 22. process of reproduction involving a single parent that results in offspring that are genetically identical to the parent
  9. 24. stage of early development in mammals that consists of a hollow ball of cells
  10. 25. developing stage of a multicellular organism
  11. 29. process in which cells become specialized in structure and function
  12. 30. structure in an animal cell that helps to organize cell division
  13. 31. abnormal cells which divide without control and can invade nearby tissues
  14. 32. network of microtubules that forms within a dividing eukaryotic cell; help to move chromosomes into the daughter cells during mitosis
Down
  1. 1. one of a group of external regulatory proteins that stimulate the growth and division of cells
  2. 2. series of events in which a cell grows, prepares for division, and divides to form two daughter cells
  3. 3. first and longest phase of mitosis in which the genetic material inside the nucleus condenses and the chromosomes become visible
  4. 4. part of eukaryotic cell division during which the cell nucleus divides
  5. 5. the process of programmed cell death
  6. 6. region of a chromosome where the two sister chromatids attach
  7. 7. process by which a cell divides into two new daughter cells
  8. 8. cell with limited potential to develop into many types of differentiated cells
  9. 9. disorder in which some of the body's cells lose the ability to control growth
  10. 10. phase of mitosis in which the distinct individual chromosomes begin to spread out into a tangle of chromatin
  11. 13. unspecialized cell that can give rise to one or more types of specialized cells
  12. 14. cells that are capable of developing into most, but not all, of the body's cell types
  13. 16. phase of mitosis in which the chromosomes separate and move to opposite ends of the cell
  14. 17. one of a family of proteins that regulates the cell cycle in eukaryotic cells
  15. 20. mass of rapidly dividing cells that can damage surrounding tissue
  16. 21. an abnormal, but non-cancerous collection of cells which do not invade other sites of the body
  17. 23. one of two identical "sister" parts of a duplicated chromosome
  18. 26. unstable form of a chemical element that releases radiation as it breaks down which can damage cells; used to diagnose and treat some types of cancer
  19. 27. type of asexual reproduction in which an organism replicates its DNA and divides in half, producing two identical daughter cells
  20. 28. cells that are able to develop into any type of cell found in the body (including cells that make up the extraembryonic membranes and placenta)