In the fruit fly, gene sizes have a bimodal distribution—many are short but some are quite long

TLS Online TPP Program

#Id: 10513

#Unit 4. Cell Communication and Cell Signaling

Four freed CED-4 dimers combine to form a CED-4 octamer, which binds two molecules of the CED-3 zymogen (an enzymatically inactive precursor) triggers the formation of the active CED-3 protease

TLS Online TPP Program

#Id: 8322

#Unit 2. Cellular Organization

Steady-state phase

G-actin monomers exchange with subunits at the filament ends, but there is no net change in the total length of filaments.

TLS Online TPP Program

#Id: 1938

#Unit 4. Cell Communication and Cell Signaling

Diverse Functions of Complement

TLS Online TPP Program

#Id: 8477

#Unit 1. Molecules and their Interaction Relevant to Biology

Each single strand of the b-sheet structure can be pictured as a twofold helix, that is, a helix with two residues per turn.

The arrangement of successive amide planes has a pleated appearance due to the tetrahedral nature of the Ca atom.

TLS Online TPP Program

#Id: 5724

#Unit 10. Ecological Principles