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Berries…with a side of DNA?
Towson University’s Center for STEM Excellence
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Exploring… What is DNA? What does DNA do? Where is DNA found?
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Exploring DNA: Modeling
Build your own model of DNA & label the parts How does your model accurately depict DNA? What are the limits to your model?
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Exploring DNA: Functioning
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Exploring DNA: Where is it?
Where would you find the DNA in each cell? What layers do you have to get through to get to the DNA?
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Where can you find cells?
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If living things consist of cells and cells have DNA, then where in the cell is the DNA?
How do we extract and isolate DNA to test this?
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Getting through the layers to find DNA
How do you get through Cell wall (plants) Cell membrane Nuclear membrane How do you get the DNA out of solution?
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If living things consist of cells and cells have DNA, then does our food have DNA in it?
Write a hypothesis, make a prediction!
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DNA Extraction Procedures
What food samples are available? What are controls? How might we use them today? Construct the protocol for DNA extraction.
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Making Observations Carefully note what happens after each step of the procedure. Does what you see make sense with what you expected to happen based on the reading?
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Results: Is DNA in food? State your claim. What is your evidence?
Defend with your reasoning.
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