I just took the test and the answer was B
E fdg dgr dgr d gd rgdrg dhh
The correct answer is option B. Purkinje fibers.
The Purkinje Fibers are responsible for the conduction of the electrical impulses in the heart muscles. They carry the contraction impulses from both right and left bundle branch to the myocardium of ventricles. They response to the electrical discharge, which takes place in the SA (Sinoatrial) Nodes.
There are three major structures that are found in plant cells that aren't found in animal cells. These are chloroplasts, (which is where the process photosynthesis takes place), a cell wall (which keeps the structure of the cell), and a large central vacuole, (which stores extra food/water). Don't make the mistake, though. Animal cells have vacuoles, but they are just smaller and not as important, because they have a different way of excreting waste, which plant cells cannot do.
D because they cannot produce their own food