Le Lesson 3.3

8 Questions  I  By Ionca
These questions deal with hormones, receptors, neutrotransmitters, and feedback mechanisms.  Use your notes. REMEMBER:  PERIOD # followed by FIRST & LAST NAME.

  
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1.  After a hormone enters the bloodstream, it is transported throughout the body, but the hormone affects only certain cells. The reason only certain cells are affected is that the membranes of these cells have specific
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2.  The virus that causes bird flu can attach to the cells of the lower part of the respiratory system in humans, but not to the cells of the upper part of the respiratory system. The most likely reason for this is that these two groups of cells have different
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3.  The diagram below represents two molecules that can interact with each other to cause a biochemical process to occur in a cell.  Molecules A and B most likely represent
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D.
4.  A process that occurs in the human body is rep- resented in the diagram below.  Which statement is most closely associated with the diagram?
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5.  Which statement best explains why some cells in the reproductive system only respond to certain hormones?
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6.  Which substances are found on cell surfaces and respond to nerve and hormone signals?
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7.  The diagram below represents an interaction between parts of an organism.  The term chemicals in this diagram represents
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D.
8.  Many viruses infect only a certain type of cell because they bind to certain
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