#Question id: 1331
#Unit 4. Cell Communication and Cell Signaling
Integrins are the principal receptors used by animal cells to bind to the extracellular matrix. They are heterodimers and function as transmembrane linkers between the extracellular matrix and the actin cytoskeleton. A cell can regulate the adhesive activity of its integrins from within. An example of an integrin containing cell junction is
#Question id: 527
#Unit 1. Molecules and their Interaction Relevant to Biology
What chemical species activates the GLUT4 protein to transport glucose into cells?
#Question id: 11238
#Unit 9. Diversity of Life Forms
If a bacterium regenerates from an endospore that did not possess any of the plasmids that were contained in its original parent cell, the regenerated bacterium will probably
#Question id: 4568
#Unit 11. Evolution and Behavior
In Darwinʹs thinking, the more closely related two different organisms are, the
#Question id: 987
#Unit 1. Molecules and their Interaction Relevant to Biology
Which is not a direct precursor of pyrimidines in their de novo biosynthesis?