Gap junctions permit the passage of molecules as large as 1.2 nm in diameter (molecules smaller than 1200 Da).

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#Id: 772

#Unit 3. Fundamental Processes

In the core polymerase active site, Process of the nucleotide addition cycle and undergoing translocation takes place by a Brownian ratchet mechanism.

 

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#Id: 9894

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 7748

#Unit 1. Molecules and their Interaction Relevant to Biology

Zeff=Z –S

Chlorine would have a Z value of 17 (the atomic number of Chlorine). Continuing to use Chlorine as an example, the 10 inner electrons (S) would screen out the positive charge of ten protons. Therefore there would be and effective nuclear charge of 17-10 or +7.

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#Id: 7808

#Unit 10. Ecological Principles

                                                                                              

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#Id: 1431

#Unit 4. Cell Communication and Cell Signaling

Integrins can mediate outside-in and inside-out signaling