A dynamic character is a character who consciously does a lot of  things in order to make things happen- i.e is a catalyst for  other events. They could be described as ha â¦ ving a lot of get up  and go; they are motivated.
Hemagglutinin, any of a group of naturally occurring glycoproteins that cause red blood cells (erythrocytes) to agglutinate, or clump together. These substances are found in plants, invertebrates, and certain microorganisms.
Hemagglutinin is very important for the virus to bind to animal cells, for example, a human red blood cell. This causes agglutination which is the clumping of the red blood cells. Tests based on this simple clumping of the red blood cells is useful to determine if one has influenza.