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livestrong136 livestrong136
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12 years ago
- Discuss the role of metabolic processes between the biotic and abiotic components of your topic
- Explain the research behind your topic and its dependency on cell knowledge
- Analyze the research – is it relevant, is it effective and is it needed?
- Give your opinion on the topic and the related research and discuss which areas you think research should be focused on.

Also, i put the files in a rar folder because the site only allows four at a time. There are 22 assignments in total, but most of them are easy and very fast to go through.  Thnx once again and ill wait for u reply.
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12 years ago
It looks good, but I think there may be an issue with the lac operon question. Generally speaking, without lactose in the cell, the repressor protein binds to the operator and prevents the read through of RNA polymerase into the three structural genes. With lactose in the cell, lactose binds to the repressor. This causes a structural change in the repressor and it loses its affinity for the operator. Thus, RNA polymerase can then bind to the promoter and transcribe the structural genes. In this system, lactose acts as an effector molecule.
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