biology

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Across
  1. 2. a layer lying outside the plasma membrane of plants, fungi, and bacteria
  2. 4. the first stage of cell division
  3. 7. second stage of cell division
  4. 9. one of several structures with specialized functions, suspened in the cytoplasm of a eukaryotic cell
  5. 11. cell division that results in 4 daughter cells, each with half the number of chromosomes of the parent cell
  6. 12. the death of cells which occurs as a normal and controlled part of an organisms growth or development
  7. 16. region of a chromosome to which the microtubules of the spindle attach
  8. 18. the number of visual appearance of chromosomes in the cell nuclei of an organism or species
  9. 21. the complete set of genes or genetic material present in a cell or organism
  10. 22. the division of a cell into 2 identical cells
  11. 23. DNA
  12. 24. non reproductive cell
  13. 26. organisms consisting of cell/s in which genetic maerial is dna in the form of chromosomes contained within a distict nucleus
  14. 28. each of a pair of minute cylindrical organelles near the nucleus in animal cells
  15. 29. a mature haploid male or female germ cell
Down
  1. 1. the finial phase of cell division
  2. 3. a molecule composed of polymers of amino acids joined together by peptide bonds
  3. 5. contains dna within a cell
  4. 6. containing 1 set of chromosomes
  5. 8. a single-celled organism
  6. 10. unit of heredity
  7. 13. the popularion of its bodily cells
  8. 14. form a protein structure that divides the genetic material in a cell
  9. 15. the resting phase between successive mitotic divisions of a cell
  10. 17. a thread like structure of nucleic acids and protein
  11. 19. a minute particle consisting of rna
  12. 20. containing 2 sets of chromosomes
  13. 25. the smallest structural and functional unit of an organism
  14. 27. each of two or more alternative forms of a gene