NPP of different ecosystem  Swamp and marsh ecosystems, can produce more biomass annually than tropical forests. In Open ocean, Nutrients are scarce in the sunlit surface waters, where low nutrient levels limit productivity to a tenth that of temperate forests

TLS Online TPP Program

#Id: 10509

#Unit 4. Cell Communication and Cell Signaling

CED-4 in C. elegans = Apaf-1 in Mammals

TLS Online TPP Program

#Id: 10510

#Unit 4. Cell Communication and Cell Signaling

The principal caspase in C. elegans is CED-3

TLS Online TPP Program

#Id: 10511

#Unit 4. Cell Communication and Cell Signaling

CED-3 in C. elegans = Caspase-9 in mammals

TLS Online TPP Program

#Id: 10512

#Unit 4. Cell Communication and Cell Signaling

EGL-1 protein binds to CED-9, alters its conformation, and catalyzes the release of CED-4 from CED-9

TLS Online TPP Program

#Id: 10513

#Unit 4. Cell Communication and Cell Signaling

Four freed CED-4 dimers combine to form a CED-4 octamer, which binds two molecules of the CED-3 zymogen (an enzymatically inactive precursor) triggers the formation of the active CED-3 protease

TLS Online TPP Program

#Id: 10514

#Unit 4. Cell Communication and Cell Signaling

In mammals

XIAP (inhibitor of apoptosis proteins) restrain both initiator and effector caspases