| Front | How does the ringing expermine show that the phloem transports sugar? |
| Back | A ring of bark and phloem is removed from a plant. The trunk swells above the ring and the swelling contains sugar. This shows that when phloem is removed, the tree can't transport sugars. |
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| Front | Describe the process of binary fission. |
| Back | First the circular DNA molecule replicates. Then the plasmids replicate. Then the parent cell divides into two cells. The two daughter cells each contain one copy of the circular DNA, but can have a variable number of plasmids. |
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| Front | What is the induced-fit model of enzyme action? |
| Back | As the substrate enters the active site of the enzyme, the active site changes shape. This puts a strain on the substrate and distorts some of the bonds, so less energy is needed to break them. |
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