| Term 
 
        | In 1665, who observed units of dead cork of plant and called these units cells? |  | Definition 
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        | Who observed the first living cell (his own sperm cell)? |  | Definition 
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        | About how many cells that are the body's building blocks do humans have? |  | Definition 
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        | What is another term for sex cells? |  | Definition 
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        | What are two of the sex cells? |  | Definition 
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        | What are all the cells in the body except for sex cells called? |  | Definition 
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        | What is the cell surrounded by? |  | Definition 
 
        | extracellular tissue fluid called interstitial fluid |  | 
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        | What is selectively permeable? |  | Definition 
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        | What does it mean to allow only certain things in and out? |  | Definition 
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        | What is a colloid with a consistency like almost gelled jello? |  | Definition 
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        | What has a lot of potassium (K+) ions? |  | Definition 
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        | Term 
 
        | What has a lot of sodium ions (Na+)? |  | Definition 
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        | Term 
 
        | What forms spindle apparatus that helps move DNA strands? |  | Definition 
 
        | two centrioles in animal cells that can divide |  | 
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        | Term 
 
        | What five body components don't have centrioles so they cannot divide? |  | Definition 
 
        | mature red blood cells, skeletal muscle cells, cardiac muscle cells, and typical neurons |  | 
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        | numerous extensions from cell's surface that grow from and are anchored to a basal body (function to move materials) |  | Definition 
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        | use info provided by DNA to carry out protein synthesis (free & fixed) |  | Definition 
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        | Term 
 
        | What is the transport system of the cell that can also store substances, transport, and synthesize? |  | Definition 
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        | Term 
 
        | What are the flattened sheets of the ER called? |  | Definition 
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