Answer:
Aggregates
Explanation:
Aggregates are thin flat plates that lie horizontally. Usually present in compacted soils, or clay deposits. This type of structure stimulates slow water infiltration.
(copied from wikihow)
In biochemistry, aligand is a substance that forms a complex with a biomolecule to serve abiological purpose. In protein-ligandbinding, the ligand is usually a molecule which produces a signal by binding to a site on a target protein.
Receptor mediated endocytosis is an endocytotic mechanism in which specific molecules are ingested into the cell. The specificity results from a receptor-ligand interaction. Receptors on the plasma membrane of the target tissue will specifically bind to ligands on the outside of the cell. An endocytotic process occurs and the ligand is ingested.
A very well studied example of receptor mediated endocytosis involves the metabolism of cholesterol.
Well silly we would all be dead if it wasnt bonded right
B.) Inversion.
I'm not quite sure, so might wanna double check, but I think that's correct. Hope I helped, if not I apologize.
Cell-surface receptors are involved in most of the signaling in multicellular organisms. There are three general categories of cell-surface receptors: ion channel-linked receptors, G-protein-linked receptors, and enzyme-linked receptors.