Latrunculin, 

a toxin secreted by sponges, binds and sequesters G-actin

TLS Online TPP Program

#Id: 9266

#Unit 6. System Physiology – Plant

N2 constitutes about 80% of the earth’s atmosphere, but the stability of its triple bond renders it inert and metabolically inaccessible to most organisms.

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#Id: 4237

#Unit 12. Applied Biology

Hayflick limit of animal cell culture

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#Id: 5208

#Unit 7. System Physiology – Animal

The endothelium of the blood vessels also plays an active role in preventing the extension of clots. 

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#Id: 7735

#Unit 1. Molecules and their Interaction Relevant to Biology

The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

TLS Online TPP Program

#Id: 1737

#Unit 4. Cell Communication and Cell Signaling

Class I MHC, glycoproteins expressed on the surface of nearly all nucleated cells; the major function of the class I is presentation of endogenous peptide antigens to CD8+ T cells.