Four genes play an essential role in controlling apoptosis during C. elegans development: 

ced-3, ced-4, ced-9, and egl-1

TLS Online TPP Program

#Id: 7507

#Unit 4. Cell Communication and Cell Signaling

ZnA and ZnB on RAG1 are regions of the proteins that form zinc fingers, elongated protein domains stabilized by the coordination of a Zn ion.

TLS Online TPP Program

#Id: 1323

#Unit 4. Cell Communication and Cell Signaling

Positive and negative regulation of adenylyl cyclase activity-

Gαs-coupled receptors

Gαi-coupled receptors

TLS Online TPP Program

#Id: 2577

#Unit 7. System Physiology – Animal

Proximal tubular reabsorption

Reabsorbs 67% of the filtered Na+

Reabsorbs 67% of the filtered water

Reabsorbs 100% of the filtered glucose & amino acids 

Reabsorbs 85% of the filtered HCO3−

Reabsorbs most of the filtered phosphate, lactate, and citrate

TLS Online TPP Program

#Id: 2365

#Unit 5. Developmental Biology

Sigma neoblasts are highly proliferative and are the only stem cells directly responsive to injury.

TLS Online TPP Program

#Id: 10349

#Unit 4. Cell Communication and Cell Signaling