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All Subject Study Guide for 7th Grade Comprehinsive (Physics, biology, chemistry, math, english, and spanish) Exam Questions and Answers Update
Homeostasis âœâ€Ã¢Å“â€When organisms maintain a stable internal environment even
when external conditions change
Metabolism âœâ€Ã¢Å“â€Combination of chemical reactions taking place within an
organism
Stimulus âœâ€Ã¢Å“â€A signal to which an organism responds
Biosphere âœâ€Ã¢Å“â€Means "living planet"
Robert Hooke âœâ€Ã¢Å“â€Scientist who looked at cork through a microscope and gave
the name to cells
Light Microscope âœâ€Ã¢Å“â€A type of microscope
Can magnify 1000x
Not as strong as other microscopes
Uses light
Scanning Electron Microscope âœâ€Ã¢Å“â€A type of microscope
Can magnify 100,000x
Uses electron beams focused by magnetic fields
Used to see surface of objects
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