Biology - Human Cells Revision

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Across
  1. 4. site of transcription
  2. 5. a molecule with a similar shape to a substrate and bonds to the active site of an enzyme
  3. 11. one nucleotide is replaced by another and amino acids change to a stop codon
  4. 15. site of the krebs cycle in the mitochondria
  5. 16. where cells have only few mitochondria
  6. 17. hydrogen ions and electrons are released by this enzyme
  7. 18. the 3' end of the original DNA strand
  8. 20. adult tissue stem cells are describes as what?
Down
  1. 1. when part of a chromosome flips itself around
  2. 2. first stage of cellular respiration
  3. 3. the name given to a cancerous tumour
  4. 6. prevents excess end products being made and wasting valuable resources
  5. 7. the peak conditions for an enzyme
  6. 8. metabolic pathway that releases energy and involved in the breakdown of molecules
  7. 9. division of a germline cell that produces gametes
  8. 10. use of the genome for choosing the best drug for treatment
  9. 12. process by which introns are removed and exons joined together
  10. 13. type of bond that joins amino acids together
  11. 14. deletion and insertion are described as what mutations
  12. 19. what is pyruvate converted to during the krebs cycle