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Ch. 26 - Bacteria and Archaea

Chapter 25, Problem 4

Explain how feedback inhibition regulates metabolic pathways.

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Welcome back. Let's look at our next question which of the following statements best describes the feedback inhibition process regulating metabolic pathways. So in feed back inhibition you have a chemical process, the results in a product and then that product itself. When there's a high concentration of the product or high amounts of the product, then that actually slows down or inhibits that chemical process. So the product itself serves to regulate the process. That makes it by inhibiting the process when its concentration or amount gets too high. So let's look at our answer choices here. Choice A. Says it uses the reaction product to regulate its own further production. This is correct. That is how it works. Choice B says it halts the synthesis process by eliminating the enzymes. Well, nothing happens to the enzymes. Um doesn't halt the process, just slows it down. Um If the product amount gets too high, Choice C. Says it produces the A. T. P. Used in the reaction. That's not the role of this. Again, it's just a regulation process and Choice D. It lowers the activation energy for the reaction to proceed. Well, that's again not the definition of feedback inhibition. So we have Which of the following statements best describes the feedback inhibition process regulating metabolic pathways. And again, we see that's when the product of a process causes an inhibitory effect, slowing down of the process itself. Choice A is our answer here. See you in the next video
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