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Feedback Inhibition

Feedback Inhibition

Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!

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In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

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Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore, it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
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Gap Junctions
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Related Experiment Video

Updated: May 15, 2026

Light/dark Transition Test for Mice

Light/dark Transition Test for Mice

Published on: November 13, 2006

Authors' reply

Rajaraman Durai¹, Philip Cheng Hin Ng

¹Department of Surgery, University Hospital Lewisham, London, SE13 6LH, UK.

Journal of Minimal Access Surgery

|December 19, 2012

Summary

No abstract available in PubMed .

Related Experiment Videos

Last Updated: May 15, 2026

Light/dark Transition Test for Mice

Light/dark Transition Test for Mice

Published on: November 13, 2006