What is the difference between lactose tolerance and lactose intolerance? Be specific.
The difference between them is intolerance is when the lactose doesn’t get paired to a
lactase enzyme to pass through. There is a T instead of a C in lactase persistence on
chromosome 2.
2. Why is lactose tolerance also called lactase persistence?
They are able to persist and digest lactose even after infancy.
3. In which cells or tissues is lactase produced and what is its role?
Cells that line the wall of the small intestine and the role is to absorb the nutrients that
pass through the intestine.
4. What normally happens to the levels of lactase produced throughout a person’s lifetime?
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5. In general, why is it important for a cell to regulate protein production?
6. What are the steps in gene expression that ultimately affect protein levels in a eukaryotic
cell?
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7. What is the role of general transcription factors and where do they bind?
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- Fall '19
- DNA, Cell nucleus
