HW#2 Vocab

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Across
  1. 3. within a cell/organism
  2. 4. complex cell that has a nucleus
  3. 6. variable-the one variable that is altered
  4. 8. specialization-cells can develop in different ways to have different features to help them carry out a special task to help the organism function
  5. 12. Organized way of gathering and analyzing evidence about the natural world
  6. 13. interpretation based on what scientists already know
  7. 14. using senses to collect information about your surroundings
  8. 17. of cells that work together (same job)
  9. 20. variables-all other variables that are kept the same in a controlled experiment
  10. 21. experiment-An experiment where only one variable is changed.
  11. 23. system-groups of organs and tissues that work together
  12. 24. review-an expert analysis of experimental results, completed to allow for other scientists to look for flaws, re-test results, and evaluate validity of the results
  13. 26. of maintaining stable internal enadaptation-a trait that an organism has that allows for it to survive and reproduce at a greater rate
  14. 28. to which an organism responds
  15. 29. unit of life
Down
  1. 1. group-in a scientific experiment, group where no changes are made (used as a comparison group)
  2. 2. of tissues that work together
  3. 5. of a single cell
  4. 7. scientific explanation for a set of observations.
  5. 9. reproduction-reproduction in which a single parent produces offspring, identical to the parent and each other
  6. 10. variable- the variable that changes in response to the independent variable (can have several)
  7. 11. up of more than one cell
  8. 15. reproduction-reproduction in which two parents produce unique offspring, different from the parents and each other
  9. 16. well-tested explanation unifies a broad range of observations
  10. 18. genetic code found in all living organisms (deoxyribonucleic acid), and is responsible for determining the traits of that organism
  11. 19. group-in a scientific experiment, group where independent variable is altered
  12. 22. the chemical reactions within an organism that build or break down substances
  13. 25. single celled organism that lacks a nucleus
  14. 27. method- Series of steps that scientists follow to approach research