Across
- 4. a factor that changes an experiment
- 7. 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.
- 9. a microscope that passes a beam of electrons over the surface of a specimen
- 12. a factor that is manipulated or changed in an experiment to find the results
- 16. a factor that is measured or recorded in an experiment as the result
- 17. 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
- 19. organisms that eat both plants and other organisms
- 22. organisms that eat only organisms
- 23. A suggested, testable answer to a well-defined scientific question or a possible, testable explanation for observations.
- 24. the process by which physical and biological characteristics are transmitted from the parent to the offspring
- 25. living creatures that are too small to see with the naked eye
- 26. process by which a single organism produces offspring (offspring receives all DNA from one parent)
- 28. special structures that are lining organisms to sense the conditions of their internal or external environment
- 29. organisms that depend on other organisms for their food
- 30. organisms that eat only plants
- 31. organisms that are able to make their own food
Down
- 1. 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
- 2. the idea that long ago, very simple life forms spontaneously appeared through chemical reactions
- 3. the process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food
- 5. the group in an experiment that is manipulated (contains the independent variable)
- 6. an abrupt and marked change in the DNA of an organism compared to that of its parents
- 8. the sum total of all processes in an organism that break down chemicals to produce energy and simple chemical building blocks
- 10. a description of a natural relationship or principle, often expressed in mathematical terms, and supported by a significant amount of evidence
- 11. process by which two parents produce genetically different offspring
- 13. a microscope that transmits a beam of electrons through a thinly sliced specimen
- 14. a microscope that shines light through a specimen using two lenses to magnify an image
- 15. the metric system, which is the most widely used system of measurement in science
- 18. organism that is internally warmed by a heat-generating metabolic process
- 20. organisms that lacks an internal mechanism for regulating body heat
- 21. the maintenance of stable internal conditions
- 27. the group in an experiment that experiences no manipulation(does not contain the independent variable)