Chapter 2 - Cells

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Across
  1. 4. A random change in the DNA
  2. 6. A cell structure that performs a specific function for the cell
  3. 7. One of two identical strands of DNA that make up a chromosome
  4. 10. A cell that does not contain a nucleus or other membrane-bound organelles
  5. 12. A mass of cells that continue to grow and divide without any obvious function in the body
  6. 13. The structure that holds chromatids together as chromosomes
  7. 17. The phase of the cell cycle during which the cell performs its normal functions and its genetic material is copied in preparation for the cell division
  8. 19. The first stage of mitosis, in which the chromosomes become visible and the nuclear membrane dissolves
  9. 20. A transport mechanism for moving chemicals into and out of the cell, from an area of higher concentration to an area of lower concentration
Down
  1. 1. The third phase of mitosis, in which the centromere splits and sister chromatids separate into daughter chromosomes, and each moves toward opposite ends of the cell
  2. 2. A structure in the cell nucleus made up of a portion of the cell’s DNA, condensed into a structure that is visible under a light microscope
  3. 3. The material in the nucleus of a cell that contains all of the cell’s genetic information
  4. 5. The movement of a fluid, usually water, across a membrane toward an area of high solute concentration
  5. 8. The stage in the cell cycle when the cytoplasm divides to form two identical daughter cells
  6. 9. A broad group of diseases that result in uncontrolled cell division
  7. 11. The second stage of mitosis, in which the chromosomes line up in the middle of the cell
  8. 14. A cell that contains a nucleus and other organelles, each surrounded by a thin membrane
  9. 15. The process of cancer cells breaking away from the original (primary) tumour and establishing another (secondary) tumour elsewhere in the body
  10. 16. The final phase of mitosis, in which the chromatids unwind and a nuclear membrane reforms around the chromosomes at each end of the cell
  11. 18. The stage of the cell cycle in which the DNA in the nucleus is divided