During growth, unicellular D. discoideum monitor their cell density relative to that of their bacterial food source by secreting a glycoprotein called prestarvation factor at a constant rate.

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#Id: 5626

#Unit 7. System Physiology – Animal

When the magnitude of the generator potential reaches about 10 mV, an action potential is produced at the first node of Ranvier.

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#Id: 1358

#Unit 4. Cell Communication and Cell Signaling

GH, prolactin, G-CSF, thrombopoietin, and Epo evolved from a common ancestral protein.

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#Id: 8607

#Unit 2. Cellular Organization

Cdk1 

=Cdc2 (vertebrates and fission yeast)

= Cdc28  (budding yeast)

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#Id: 9032

#Unit 4. Cell Communication and Cell Signaling

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#Id: 2109

#Unit 8. Inheritance Biology

Deletion includes the centromere, then the chromosome will not segregate in meiosis or mitosis and will usually be lost.