T_x (total years lived) is calculated by summing the values of Lx in age class x and all subsequent (older) age classes.

TLS Online TPP Program

#Id: 8988

#XL - T Zoology

TLS Online TPP Program

#Id: 9537

#XL - T Zoology

Proximate causes - The subject of cell biology, neurobiology, and many other biological disciplines.

Ultimate causes - Their historical causes, especially the action of natural selection.

TLS Online TPP Program

#Id: 7916

#XL - Q Biochemistry

Energy inputs are needed to Import proteins into mitochondria

Chaperone proteins (Hsp70& Hsp90)

An H+ electrochemical gradient, or proton-motive force

TLS Online TPP Program

#Id: 9664

#XL - T Zoology

Activated RTKs and cytokine receptors initiate another phosphoinositide pathway by recruiting PI-3 kinase to the cytosolic surface of the plasma membrane.

TLS Online TPP Program

#Id: 9535

#XL - T Zoology