Biology 1

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Across
  1. 3. The process where a cell develops certain features so that it is specialised to carry out a certain function.
  2. 6. The seventh stage of meiosis where the chromatids are pulled apart to opposite poles of the cell.
  3. 7. The division of a cell to produce two genetically identical daughter cells.
  4. 11. A type of epithelium which has many fine protrusions known as cilia and is specialised for sweeping dirt and debris out of the body.
  5. 13. The fifth stage of meiosis where the nuclear envelope breaks down, the spindle fibres form and the chromosomes condense.
  6. 15. The chromosomes produced by the crossing over and exchange of genes during metaphase 1.
  7. 17. The production of genetically identical offspring from one parent through the process of mitosis.
  8. 20. Cells with only one copy of each chromosome.
  9. 21. A type of cell division used to produce gametes that produces four genetically different haploid daughter cells from one parent cell.
  10. 22. A type of white blood cell with a multi-lobed nucleus which is specialised to engulf and destroy pathogens.
Down
  1. 1. The third stage of meiosis where the chromosomes that make up the bivalent are pulled apart to the poles of the cell by the spindle fibres.
  2. 2. The checkpoint occurring at the end of metaphase during mitosis which ensures all of the chromosomes have correctly attached to the spindle fibres and aligned at the metaphase plate.
  3. 4. An organelle found in the head of sperm cells which is specialised to digest the outer coating of an egg cell during fertilisation.
  4. 5. A type of plant tissue which contains stem cells and is usually found in the growing regions of the plant.
  5. 8. The final stage of mitosis where new nuclear envelopes begin to form around the separated sets of chromosomes.
  6. 9. A pair of homologous chromosomes.
  7. 10. A type of cell usually found in pairs that is specialised to control the opening and closing of stomata.
  8. 12. A type of cell found in the leaves of plants which contains many chloroplasts and is specialised to carry out photosynthesis.
  9. 14. The division of the cytoplasm at the end of mitosis to produce two new daughter cells.
  10. 15. A type of cell that is found in the roots of cells which has a large surface area and is specialised for the uptake of water and ions from the soil.
  11. 16. The fourth stage of meiosis where the nuclear envelopes reform around the separated chromosomes and they uncoil.
  12. 18. A tissue found in plants which is specialised for the transport of assimilates from their site of production to different parts of the plant where they are needed.
  13. 19. A type of stem cell which has the ability to differentiate into any cell type within a certain tissue in the body.