A plot of the amount of ligand bound to the receptor

[RL] versus the amount of free ligand [L] called a

ligand-binding or saturation curve

TLS Online TPP Program

#Id: 7079

#Unit 3. Fundamental Processes

Selenocysteine, sometimes called the “twenty-first amino acid,”

is incorporated into proteins with the aid of a tRNA that interprets the UGA Stop codon as a Sec codon. tRNASec is initially charged with serine in a reaction catalyzed by the same SerRS that charges tRNASer.

TLS Online TPP Program

#Id: 10044

#Unit 4. Cell Communication and Cell Signaling

In Notch/Delta pathway, 

signaling molecule is Delta, an integral membrane protein bound to the surface of the signaling cell.

TLS Online TPP Program

#Id: 5850

#Unit 10. Ecological Principles

Island biogeography

TLS Online TPP Program

#Id: 1273

#Unit 7. System Physiology – Animal

ACTH stimulates the synthesis and secretion of cortisol by the activation of adenylyl cyclase via Gs.

TLS Online TPP Program

#Id: 633

#Unit 3. Fundamental Processes

Transition and Transversion showed up during replication only.