Ions, low-MW precursors of cellular macromolecules, products of intermediary metabolism, & small intracellular signaling molecules can pass from cell to cell through gap junctions.

TLS Online TPP Program

#Id: 9350

#XL - T Zoology

RI and RII receptors are homodimeric proteins with serine/threonine kinases in their cytosolic domains. 

(RI and RII sufficient to serve as a functional hetero-tetrameric TGF-β receptor)

TLS Online TPP Program

#Id: 7051

#XL - T Zoology

Haldane’s rule: hybrid sterility or hybrid inviability is often limited to the heterogametic sex. 

TLS Online TPP Program

#Id: 5498

#XL - T Zoology

TLS Online TPP Program

#Id: 7044

#XL - T Zoology

Orthogenesis - “Straight-line evolution,” held that the variation that arises is directed toward fixed goals.

TLS Online TPP Program

#Id: 10310

#XL - Q Biochemistry

Regulation and function of T helper subtypes