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Investigation 6.5
Getting from the Intestines to the Cell |
Think back to your investigations on digestion. Where did the glucose come from? |
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We have seen that the glucose needs to get to the cell through the blood stream. But how does it do this? How does it get out of the intestines and into the blood and then to the cell once the circulatory system carries it to the cell? Draw your ideas. |
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In this section we are going to discuss how the blood gets glucose from the intestines to be carried into the cells. Later we will look only at how the blood gets oxygen to be carried to the cells. |
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Remember from your study of digestion that glucose is very small. What kind of blood vessels could the glucose may go through? How close would these blood vessels need to be to the intestine to get the glucose? |
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After you have your own idea about this question, discuss it with your group. Share your drawing and ideas with your group. If your ideas are different than others in your group, try asking them questions that will get them to defend their model. Can you defend your model? |
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Share your group's ideas with the rest of the class. Remember to listen carefully to other group's ideas. Do they make sense? |
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Do some of the ideas seem possible? |
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Now, going back to how glucose gets out of the intestines and into the bloodstream, try to come up with ideas about how all the activities you have just completed might relate to the movement of substances into the blood from the small intestines and into the cells from the blood vessels. |
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Now compare your ideas with those of your group. Draw a group model on your whiteboard to share with the class. |
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