Rapid Ventricular Filling

aortic pressure decreases as blood runs off from the aorta into the arterial tree, to the veins, and then back to the heart.

TLS Online TPP Program

#Id: 1634

#Unit 4. Cell Communication and Cell Signaling

C5b678 complex can create a small pore, 10 Å in diameter.

TLS Online TPP Program

#Id: 7157

#Unit 5. Developmental Biology

Gray Crescent 

The region opposite the point of sperm entry, where the greatest displacement of cytoplasm occurs (Gastrulation will begin)

Vegetal rotation: Vegetal cells asymmetrically press up against the inner blastocoel roof on the dorsal side.

Bottle cell formation and invagination: Localized apical constriction at the dorsal blastopore lip creates anisotropic forces that foster invagination.

Involution and cell migration: The leading edge of invaginating cells crawls up onto the blastocoel roof.

Convergence and extension: The targeted medial-to-lateral intercalation of cells on the midline (convergence) drives anterior-posterior axis elongation (extension).

TLS Online TPP Program

#Id: 673

#Unit 3. Fundamental Processes

Shelterin functions to protect telomeres from DNA damage repair pathways and to regulate telomere length control by telomerase

TLS Online TPP Program

#Id: 8471

#Unit 1. Molecules and their Interaction Relevant to Biology

poly(Pro) helix are stabilized by water molecule hydrogen bonding

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.