All proteins found in the nucleus, histones, transcription factors,  DNA & RNA polymerases are synthesized in the cytoplasm and imported into the nucleus through nuclear pore complexes.

TLS Online TPP Program

#Id: 9327

#Unit 4. Cell Communication and Cell Signaling

The binding of arrestin to rhodopsin speeds up the inactivation process.

TLS Online TPP Program

#Id: 954

#Unit 5. Developmental Biology

When sulfated polysaccharide binds to its receptor on the sperm, activates 3 sperm membrane proteins: 

(1) A calcium transport channel

(2) A sodium-hydrogen exchanger

(3) A phospholipase enzyme (IP3)

TLS Online TPP Program

#Id: 1187

#Unit 7. System Physiology – Animal

Types of retinal ganglion cells:

  large ganglion cells (magno, or M cells)

  small ganglion cells (parvo, or P cells)

TLS Online TPP Program

#Id: 7058

#Unit 11. Evolution and Behavior

The Forces of Evolution

mutation, 

genetic drift

gene flow or migration

selection.

TLS Online TPP Program

#Id: 609

#Unit 2. Cellular Organization

Major enzyme is Tryptophan Synthase whose activity is reduced when trp concentration is high.