13. Select the best statement that describe on how enzyme catalyses chemical reactions in living organisms

Enzyme provides additional energy to start the chemical reaction

Enzyme supplies substrate for the chemical reaction to occur

Enzyme removes inhibitors that attach to substrates

Enzyme lowers activation energy of a chemical reaction​

How had the study of mitosis affected scientists knowledge of cancer

The dna in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. for example, consider these two proteins: phosphofructokinase (pfk) is an enzyme that functions in the cytoplasm during glycolysis. insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations. for each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?