During apoptosis

caspase-3 cleaves the inactive phospholipid scramblase XKR8. 

TLS Online TPP Program

#Id: 6614

#Unit 7. System Physiology – Animal

TLS Online TPP Program

#Id: 10292

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 8098

#Unit 1. Molecules and their Interaction Relevant to Biology

The surfaces of the cells that form the alveoli (small air spaces of the lung) are coated with surfactant, which decreases the alveolar surface tension. 

Lung surfactant contains 80 to 90% phospholipid by weight, and 70 to 80% of the phospholipid is phosphatidylcholine, mostly the dipalmitoyl species.

TLS Online TPP Program

#Id: 9370

#Unit 4. Cell Communication and Cell Signaling

SnoN and Ski trigger abnormal cell proliferation by blocking the Smad-complex.

TLS Online TPP Program

#Id: 8858

#Unit 2. Cellular Organization

Cohesin-mediated cohesion between sister chromatids is established by a two-step process:

1.Loading and unloading of cohesins

2. Stabilization of cohesins