Acc Bio. Chapter 1
Terms
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- When did the first life forms emerge on Earth, and what were they?
- 3.5 billion years ago, and were single-celled organisms.
- What is Biology?
- The study of life
- What are the six major themes of biology?
- Cell structure and function, homeostasis, reproduction and inheritance, evolution, interdependence, and matter, energy and oragnization
- What characteristics do all living things share?
- Cells, organization, energy use, homeostasis, growth, reproduction
- What steps are in a basic scientific method?
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Observing a problem
Asking a question
Collecting Data
Hypothesizing
Experimenting
Drawing Conclusions - What falls under 'Collecting Data'?
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Observing
Measuring
Sampling
Oragnizing data - What is a microscope?
- An instrument that produces an enlarged image of an object
- How is a Compound Light Microscope used?
- Thinly sliced objects are placed on a glass slide and light passes through the object.
- How do you calculate magnification?
- Power of ocular lens times power of objective lens.
- What does an electron microscope use to view specimens?
- Electrons