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Definition
| An explanation for a very general class of phenomena or observations. |
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The cell theory and the theory of evolution provide a foundation for the development of modern biology because they focus on two of the most general questions possible.
What are these two questions? |
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Definition
1. What are organisms made of
2. Where did they come from |
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| Who used a crude microscope to examine the structure of cork (a bark tissue) from an oak tree? |
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Who was the first person to observe small, pore-like compartments in bark that were invisible to the naked eye?
In what year? |
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| Who whas the first person to observe and describe single celled organisms as well as human blood and sperm cells? |
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| what is a highly organized compartment that is bounded by a thin, flexible structure called a plasma membrane that contains concentrated chemicles in an aqueous solution? |
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| Where do most chemical reactions that sustain life take place? |
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Definition
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| Most scientific theories have 2 components, what are they? |
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Definition
1. The first describes a pattern in the natural world
2. The second identifies a mechanism or process that is responsible for creating that pattern. |
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| The complete cell theory can be stated as follows... |
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Definition
| All organisms are made of cells, and all cells come from preexisting cells. |
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Definition
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| Which Scientist tested the spontanious generation and all-cells-from-cells hypothesis? |
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| Something that can be measured and that must be correct if a hypothesis is valid... |
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The sucess of the cell theory's process component had an important implication...
what was it? |
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Definition
If all cells come from preexisting cells, it follows that all individuals in a population of single-celled organisms are related by common ancestry.
The same is true of Multicellular organisms |
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