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Chapter 1 - The Science of Biology
Across
1. device that produces magnified images of structures that are too small to see with the unaided eye
5. a test of the effect of a single variable by changing it while keeping all other variables the same; called a(n) _?_ experiment.
6. possible explanation for a set of observations or possible answer to a scientific question
8. logical interpretation based on prior knowledge and experience
10. decimal system of measurement based on certain physical standards and scaled on multiples of 10
11. microscope that allows light to pass through a specimen and uses two lenses to form an image
14. hypothesis (disproven) stating that life could arise from nonliving matter; called _?_ generation
15. well-tested explanation that unifies a broad range of observations
16. factor in an experiment that a scientist purposely keeps the same; called a(n) _?_ variable.
Down
2. technique in which cells are broken into pieces and the different cell parts are separated
3. use of one or more of the senses—sight, hearing, touch, smell, and sometimes taste—to gather information
4. organized way of using evidence to learn about the natural world; also, the body of knowledge that scientists have built up after years of using this process
5. group of cells grown in a nutrient solution from a single original cell
7. factor in an experiment that a scientist purposely changes; also known as independent variable; called a(n) _?_ variable.
9. microscope that forms an image by focusing beams of electrons onto a specimen
12. evidence; information gathered from observations
13. science that seeks to understand the living world