When cellular iron concentrations return to normal levels, IRP1 is converted to aconitase, and IRP2 undergoes proteolytic degradation, ending the low-iron response.

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#Id: 7969

#Unit 10. Ecological Principles

Biogeochemical cycles can be divided into two broad types:

Local cycles, which involve elements with no atmospheric mechanism for long-distance transfer. Ex- The phosphorus cycle

Global cycles, which involve an interchange between the atmosphere and the ecosystem. Ex- The carbon, Nitrogen, Sulfur, and Water

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#Id: 7583

#Unit 5. Developmental Biology

Negative membrane potential may allow calcium channels to be opened and permit calcium to enter the sperm. 

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#Id: 2241

#Unit 11. Evolution and Behavior

Neutral theory of molecular evolution developed by Motoo Kimura

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#Id: 1367

#Unit 4. Cell Communication and Cell Signaling

All STAT proteins contain: 

An N-terminal DNA-binding domain

An SH2 domain

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#Id: 9826

#Unit 6. System Physiology – Plant

phyA is rapidly degraded as Pfr and controls plant responses to VLFRs and the far-red HIRs.