The synthesis and secretion of steroid hormones by the adrenal cortex depend on the stimulation of cholesterol desmolase by ACTH.

TLS Online TPP Program

#Id: 9090

#Unit 4. Cell Communication and Cell Signaling

This results in continuous activation of the AC of intestinal epithelial cells, chronically active PKA which phosphorylates the CFTR Cl- channel and a Na-H exchanger in the intestinal epithelial cells. 

TLS Online TPP Program

#Id: 2362

#Unit 5. Developmental Biology

Zeta and Sigma neoblasts are morphologically indistinguishable, but they express different gene regulatory networks.

TLS Online TPP Program

#Id: 6797

#Unit 3. Fundamental Processes

Dicer is constructed of three modules: two RNase III domains and a dsRNA-binding domain called the PAZ domain (named for three proteins that contain this domain: Piwi, Argonaute, and Zwille).

TLS Online TPP Program

#Id: 9854

#Unit 6. System Physiology – Plant

Phototropins (phots) are involved in directing organ, chloroplast, and nuclear movements, solar tracking, and stomatal opening

TLS Online TPP Program

#Id: 9139

#Unit 10. Ecological Principles

Kleptoparasitism, meaning parasitism by theft, is a form of feeding where one animal takes food that another has caught.