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12 Cards in this Set
- Front
- Back
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Which cell structure contains the cell's genetic material and controls many of the cell's activities? |
Nucleus |
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Cells fall into two broad categories, depending on whether they....... |
Have a nucleus |
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Which organelle makes proteins using coded instructions that come from the nucleus? |
Ribosome |
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Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use? |
Mitochondrion |
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What is a function of the cell membrane? |
Regulates which materials enter and leave the cell |
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An organ system is a group of organs that................. |
Work together to perform a specific function |
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Who was the first person to identify and see cells? |
Robert Hooke |
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The thin, flexible barrier around a cell is called the ___________. |
Cell membrane |
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What is the main function of the cell wall? |
Support and protect the cell |
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Molecules tend to move from an area where they are more concentrated to an area where they are less concentrated. This process is called __________. |
Diffusion |
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The cells in a multicellular organism have specific jobs. This is called __________. |
Cell specialization |
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Why are the 4 levels of organizations not used to describe unicellular organisms? |
Unicellular organisms only have one cell which is not enough to form tissue and without tissue you can't form organs or organ systems. |
