Key Biology Terms

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Across
  1. 1. a group of proteins that makes sure the cell moves on to the next stage of the cycle when appropriate
  2. 2. the synthesis of mRNA copied from the DNA base sequences by RNA polymerase
  3. 3. this strand is made continuously in DNA (2 words)
  4. 5. woman who provided evidence using x-ray diffraction to show that DNA was a helix (2 words)
  5. 9. full name of DNA (2 words)
  6. 11. when the cell membrane forms a pocket around what it wants to ingest and engulfs it forming a vesicle
  7. 13. the breakdown of complex molecules into simpler molecules
  8. 14. a fatty acid with single bonds between all of its carbon atoms (3 words)
  9. 17. the synthesis of complex molecules from simpler molecules
  10. 19. when things go through a cell membrane using energy from the cell; proceeds against the concentration gradient (2 words)
  11. 20. when the concentration of a substance is lower outside a cell; causes the cell to swell up
  12. 21. two individuals that created the first model of the structure of DNA (3 words)
  13. 23. where DNA is stored in the cell
  14. 24. phase of mitosis where daughter chromosomes separate
  15. 25. "water-fearing"
  16. 26. number of parts a nucleotide consists of
  17. 27. the organelle that breaks things down so that their parts can be reused by the cell
Down
  1. 1. the process of cell division
  2. 2. helps to explain the evolution of eukaryotic cells (3 words)
  3. 4. a chain of amino acids
  4. 6. binding site in membranes
  5. 7. enzyme that links nucleotides together to form a new strand
  6. 8. an example of a carbohydrate
  7. 10. the organelle that puts proteins together
  8. 12. one of the four bases of DNA
  9. 15. the synthesis of polypeptides on ribosomes
  10. 16. the structure of two DNA strands wound together (2 words)
  11. 18. the web of all the enzyme catalyzed reactions in a cell
  12. 22. these aid in the process of supercoiling DNA
  13. 25. an enzyme that unwinds the double helix and separates the two strands