Most galaxies are not alone in the vast expanse of space, but are connected to one or more other galaxies by gravity. The same force that holds you onto the Earth can keep many individual galaxies bound together. How are galaxies held together? Galaxies are sprawling systems of dust, gas,Read More →

Fabs are a common form-factor for monoclonal antibodies designated for therapeutic use. The Fab abciximab, which inhibits blood clotting, works by disabling glycoprotein IIb/IIIa found on platelets. What is the constant region? Medical Definition of constant region : the part of the polypeptide chain of a light or heavy chainRead More →

A ligand that can bind to and alter the function of the receptor that triggers a physiological response is called a receptor agonist. Ligands that bind to a receptor but fail to activate the physiological response are receptor antagonists. What happens when a ligand binds to a receptor quizlet? BindingRead More →

The iron ion can form two additional bonds, one on each side of the heme plane. These binding sites are called the fifth and sixth coordination sites. In hemoglobin, the fifth coordination site is occupied by the imidazole ring of a histidine residue from the protein. What happens to ironRead More →