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| 1 |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0072919264/63062/mc0101.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (26.0K)</a>]]>
In the figure above, which structure represents the simplest unit of life? |
 | A) | the organism |
| B) | the tissue |
| C) | the organelle |
| D) | the cell |
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| 2 | Which structure represents more than one cell type sharing a common function? |
| A) | the organism |
| B) | the cell |
| C) | the tissue |
| D) | the organ system |
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| 3 | Complex, multicellular organisms usually consist of multiple |
| A) | tissues |
| B) | organs |
| C) | organ systems |
| D) | all of the above |
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| 4 |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0072919264/63062/mc0104.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (33.0K)</a>]]>
The above illustration best demonstrates: |
| A) | a non-biological positive feedback mechanism |
| B) | a non-biological negative feedback mechanism |
| C) | a biological negative feedback mechanism |
| D) | none of the above |
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| 5 | In the picture, the thermostat represents: |
| A) | an effector |
| B) | a receptor |
| C) | a control center |
| D) | an output pathway |
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| 6 | The furnace acts as: |
| A) | an effector |
| B) | a receptor |
| C) | a control center |
| D) | an output pathway |
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| 7 |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0072919264/63062/mc0107.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (33.0K)</a>]]>
The process in this illustration can best be described as: |
| A) | a biological negative feedback mechanism |
| B) | a biological positive feedback mechanism |
| C) | a non-biological negative feedback mechanism |
| D) | a non-biological positive feedback mechanism |
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| 8 | In step 2 of the above process, the nerve impulses transmitted to the brain are an example of: |
| A) | an input pathway to the control center |
| B) | an output pathway from the control center |
| C) | a sensor |
| D) | a receptor |
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| 9 | Oxytocin acts as: |
| A) | a sensor |
| B) | an input pathway |
| C) | a control center |
| D) | an effector |
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| 10 | The brain acts as: |
| A) | a sensor |
| B) | an input pathway |
| C) | a control center |
| D) | an effector |