The tighter the binding of a ligand to its receptor,the lower the concentration of ligand needed to achieve binding to 50 percent of the receptors.

TLS Online TPP Program

#Id: 8149

#XL - Q Biochemistry

ARF and Sar1 similar to Ras

TLS Online TPP Program

#Id: 10346

#XL - Q Biochemistry

T1 cells are mIgMhi, mIgD -/lo, CD21-, CD23-, CD24+, and CD93+. 

T2 cells differ from T1 cells in having higher levels of mIgD and in expressing CD21 and CD23. 

TLS Online TPP Program

#Id: 9054

#XL - T Zoology

The activated β2-adrenergic receptor induces GDP-->GTP exchange on a stimulatory G protein (Gs).

TLS Online TPP Program

#Id: 10605

#XL - R Botany

III. Vascular plants  (pteridophyta)

EVOLUTION OF LEAVES

spore-bearing leaves called sporophylls

In terms of size and complexity, leaves can be classified as either microphylls or megaphylls

TLS Online TPP Program

#Id: 9978

#XL - T Zoology

β-catenin binds to TCF to displace the Gro repressor and recruits co-activator proteins Pygo, LGS, to activate target gene expression.