Brenda florio review

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Across
  1. 1. – atoms of the same element that have different numbers of neutrons
  2. 3. web- network of feeding interaction (two words)
  3. 7. site: is where the chemical reaction occurs (two words)
  4. 8. – no charge bound to nucleus
  5. 10. Chromosomes: Single, circular chromosome in the cytoplasm (two words)
  6. 13. : are inorganic molecules that speed up chemical reactions
  7. 14. – small, swimming animals that feed off algae
  8. 16. reproduction – production of genetically identical offspring from a single parent (two words)
  9. 17. – oldest cells
  10. 20. energy: the energy required to start a chemical reaction (two words)
  11. 21. Descent – all living organisms are related to one another (two words)
  12. 22. reproduction – the fusion of two separate parents cells to produce offspring with some genetic information from each parent (two words)
  13. 23. – negative charge, are in constant motion in the space surrounding the nucleus
  14. 24. a record of the history of life on Earth
  15. 25. Selection: Organisms that are best adapted to an environment survive and reproduce more than others (two words)
Down
  1. 2. – positive charge bound to the nucleus along with neutrons
  2. 4. cell = more demand on it’s DNA (two words)
  3. 5. Organs: “leftover” traces of evolution that serve no purpose (two words)
  4. 6. – the portion of the cell outside the nucleus
  5. 9. newer cells
  6. 11. an inherited trait that increases an organism’s chances of survival
  7. 12. – genetic information bundled into packages of DNA
  8. 15. – “little organs” each have specialized function like organs
  9. 18. : the molecule that the enzyme acts on.
  10. 19. cycle – process of cell growth and division (two words)