Biology Crossword

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Across
  1. 4. between the 1st or 2nd phase of cell divisions of meiosis
  2. 7. made up of short micro-tubules that are involved in cell division
  3. 13. DNA for short
  4. 14. when bound to the endoplasmic reticulum it becomes referred to as rough
  5. 15. the second stage of cell division,,during which the chromosomes become attached to the spindle fibres.
  6. 16. a substance made from a polypeptide chain
  7. 19. the division of the nucleus
  8. 21. a protein structure that divides the genetic material in a cell
  9. 25. long strands of DNA
  10. 26. the final phase of cell division
  11. 28. a cell that contains 1 set of chromosomes
  12. 29. a gene that controls one function
Down
  1. 1. an organism whose cells have a cell nucleus and other organelles enclosed within membranes
  2. 2. a segment of DNA that codes for particular protein.
  3. 3. a visual representation of all the chromosomes found in organism
  4. 5. cells that reproduce by mitosis
  5. 6. the centre of the chromosome
  6. 8. a specialized type of cell division that reduces the chromosome number by half
  7. 9. are cells that reproduce by meiosis
  8. 10. the complete set of genes
  9. 11. the cell program of death
  10. 12. the first stage of nuclear divisions
  11. 17. contains the cell's genetic material, DNA
  12. 18. a female or male germ cell
  13. 20. specialised structures within a living cell.
  14. 22. a single celled organism is classified as
  15. 23. a cell that contains 2 sets of chromosomes
  16. 24. a structure surrounding the outside of a plasma membrane in most plant cells, bacteria and fungi
  17. 27. the building blocks of matter