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All living things are composed of cells.
Cells are the basic units of structure and function in living things.
New cells are produced from existing cells. |
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| Difference between Eukaryotes and Prokaryotes |
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| Eukaryotes contain nuclei; prokaryotes do not |
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| prokaryotic cells have have genetic material that is not contained in a nucleus |
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| Eukaryotic celss contain a nucleu in which their genetic material is spearated form the rest of the cell. |
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| small tructures act like specialized organs; little organs |
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| nearly all of the cell's DNA and with it the coded instructions for making proteins and other important molecules. |
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| where proteins are assembled |
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| The endoplasmic reticulum is... |
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| the site where lipid components of the cell membrane are assembled along with proteins and other materials that are exported from the cell. |
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| The function of the Golgi apparatus is to... |
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| modify, sort and package proteins and other materials from the ER for storage in the cell or for secretion out of the cell. |
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| convert chemical energy stored in food into compounds taht are convenient for the cell to use. |
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| Chloroplasts are organelles that... |
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| capture energy from sunlight and convert it into chemical energy in a process known as photosynthesis. |
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| The cytoskeleton is a network... |
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Definition
of protein filaments that help the cell maintain its shape. It is also involved in movement.
Microfilaments
Microtubules 9+2 cilia and flagella |
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| regulates what enters and leaves the cell and provides protection and support. |
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| provide support and protection for the cell. |
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| Because diffusion depends upon random movements.... |
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| substances difuse across membranes without requiring the cell to use energy. |
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| the diffusion of water trough a selectively permeable membrane. |
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| same strength (same dilution) |
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| above strength - more concentrated |
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| below strength - more dilute |
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