Biology Chapter 1 Vocabuary

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Across
  1. 3. system: group of organs that work together to do a certain job
  2. 5. all of the populations of different species that live in the same area
  3. 7. structure composed of more than one type of tissue that performs a particular function
  4. 8. variable: variable in a scientific experiment that is manipulated by the researcher to investigate its affect on another variable, called the dependent variable.
  5. 11. all the living things in a given area together with the physical factors of the nonliving environment
  6. 13. part of Earth where all life exists, including land, water, and air
  7. 15. the variety of life and its processes; including the variety of living organisms, the genetic differences among them, and the communities and ecosystems in which they occur
  8. 17. possible answer to a scientific question; must be falsifiable
  9. 19. process of maintaining a stable environment inside a cell or an entire organism
  10. 20. basic unit of structure and function of living things
  11. 22. group of similar ecosystems with the same general type of physical environment
  12. 23. method: the process of a scientific investigation
  13. 24. law: statement describing what always happens under certain conditions in nature.
Down
  1. 1. all the organisms of the same species that live in the same area
  2. 2. process by which living things give rise to offspring
  3. 4. group of cells of the same kind that perform a particular function in an organism
  4. 6. variable: variable in a scientific experiment that is affected by another variable, called the independent variable.
  5. 9. anything that is detected with the senses
  6. 10. an individual living thing
  7. 12. theory: broad explanation that is widely accepted as true because it is supported by a great deal of evidence.
  8. 14. science of life, study of life
  9. 16. relationship between living things that depend on the same resources in the same place and at the same time
  10. 18. close relationship between organisms of different species in which at least one of the organisms benefits from the relationship
  11. 20. theory: theory that all living things are made up of cells, all life functions occur within cells, and all cells come from already existing cells.
  12. 21. theory: Theory that the characteristics of living things are controlled by genes that are passed from parents to offspring.