The LexA repressor is inactivated when it catalyzes its own cleavage at a specific Ala–Gly peptide bond.

TLS Online TPP Program

#Id: 1927

#Unit 4. Cell Communication and Cell Signaling

Lectin pathway

TLS Online TPP Program

#Id: 4030

#Unit 7. System Physiology – Animal

Positive chronotropic effects are increases in heart rate.

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#Id: 8248

#Unit 1. Molecules and their Interaction Relevant to Biology

Van der Waals interaction is the weakest of all intermolecular attractions between molecules.

TLS Online TPP Program

#Id: 7816

#Unit 10. Ecological Principles

Animals use behavior to survive in cold temperatures

Curling up into a ball to reduce the exposed surface area. 

Penguins may huddle together to conserve heat. 

Bears hibernate, spending the winter in a deep sleep.

TLS Online TPP Program

#Id: 2601

#Unit 13. Methods in Biology

A modification of overlap extension PCR may also be used to construct directed mutations; this is termed megaprimer PCR .