A clathrin molecule,

called a triskelion, is composed of : 

Three heavy chains

Three light chains

TLS Online TPP Program

#Id: 1971

#XL - T Zoology

The number alive during an age class can be estimated by the relationship:

TLS Online TPP Program

#Id: 9630

#XL - T Zoology

Other EGF family receptors HER2, HER3, and HER4 do not undergo internalization after exposure to ligand

TLS Online TPP Program

#Id: 9769

#XL - R Botany

NADPH oxidases respiratory burst oxidase homolog (Atrboh) genes

TLS Online TPP Program

#Id: 7058

#XL - T Zoology

The Forces of Evolution

mutation, 

genetic drift

gene flow or migration

selection.

TLS Online TPP Program

#Id: 8347

#XL - Q Biochemistry

To nucleate the assembly of branched actin filaments, Arp2/3 needs to be activated by a nucleation promoting factor (NPF)