What is biological control?
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When glucose is present, the lac genes are not fully expressed, even when lactose is present to repress the Lac repressor. (a) Why does it make biological sense to have the lac operon be sensitive to the presence of glucose? How is this accomplished? (b) Why does it make biological sense to have the lac operon be under the negative control of the Lac repressor?
Describe in DETAIL the biological reasons why a womanâs taking of the basic birth control pill cannot possibly be considered an abortion and why the âmorning after pillâ and the IUD might be.
1. What are the control mechanisms that regulate all of thedifferent biochemical reactions that take place in the cell?
2. How do proteins work? How does their structure influencetheir properties?
3. How are biological molecules synthesized and degraded?
4. How do cells and organisms grow, differentiate, andreproduce?