Reading an EKG is done by careful viewing of the EKG strip. This  includes assessment of rhythm regularity, calculating heart rate,  observing the form of various parts of tâ¦he EKG and their timing.
This process of cell culture or tissue culture requires a method to dissociate the cells from the container and each other. Trypsin, an enzyme commonly found in the digestive tract, can be used to digest the proteins that facilitate adhesion to the container and between cells.his process of cell culture or tissue culture requires a method to dissociate the cells from the container and each other. Trypsin, an enzyme commonly found in the digestive tract, can be used to digest the proteins that facilitate adhesion to the container and between cells.
1 If the amino acid tryptophan (Trp) is added to the culture, the bacteria soon stop producing the five enzymes previously needed to synthesize Trp from intermediates produced during the respiration of glucose. 2  In this case, the presence of the products of enzyme action represses enzyme synthesis.he genes encoding these are clustered together in a single operon with its own promoter and operator. In this case, however, the presence of tryptophan in the cell shuts down the operon. When Trp is present, it binds to a site on the Trp repressor and enables the Trp repressor to bind to the operator.