Across
- 2. the sum total of all processes in an organism that convert energy and matter from outside sources and use that energy and matter to sustain the organism's life functions
- 4. a suggested, testable answer to a well-defined scientific question or a possible, testable explanation for observations
- 6. an explanation of some part of the natural world that has been thoroughly tested and is supported by a significant amount of evidence from observations and experiments
- 8. the variable manipulated by the experimenter
- 9. special structures that allow living organisms to sense the conditions of their internal or external environment
- 11. The collected body of data from experiments and observations
- 12. the group in an experiment that experiences no manipulation (does not contain the independent variable)
- 15. observations that are not easily counted or measured, such as color or texture
- 16. organisms that are able to make their own food
- 18. organisms that eat only plants
- 20. organism that is internally warmed by a heat-generating metabolic process
- 21. the sum total of all processes in an organism that break down chemicals to produce energy and simple chemical building blocks
- 23. the maintenance of stable internal conditions
- 27. process by which two parents produce genetically different offspring (offspring receives a combination of DNA from two parents)
- 28. the variable responding to the manipulated variable
- 31. an abrupt and marked change in the DNA of an organism compared to that of its parents
- 32. a microscope that passes a beam of electrons over the surface of a specimen
- 34. the process by which physical and biological characteristics are transmitted from the parent (or parents) to the offspring
- 35. observations involving numbers, such as counting or measuring
Down
- 1. a factor that changes an experiment
- 3. living creatures that are too small to see with the naked eye
- 5. logical interpretation based on prior knowledge, experience, or evidence
- 7. the metric system (abbreviated SI), which is the most widely used system of measurement in science
- 10. a microscope that transmits a beam of electrons through a thinly sliced specimen
- 13. organisms that eat both plants and other organisms
- 14. organisms that depend on other organisms for their food
- 17. the process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food
- 19. organism that lacks an internal mechanism for regulating body heat
- 22. a microscope that shines light through a specimen using two lenses to magnify an image
- 24. the sum total of all processes in an organism that use energy and simple chemical building blocks to produce large chemicals and structures necessary for life
- 25. process by which a single organism produces genetically identical offspring (offspring receives all DNA from one parent)
- 26. organisms that only organisms other than plants
- 29. the group in an experiment that is manipulated (contains the independent variable)
- 30. the idea that long ago, very simple life forms spontaneously appeared through chemical reactions
- 33. a description of a natural relationship or principle, often expressed in mathematical terms, and supported by a significant amount of evidence