The right answer for the question that is being asked and shown above is that: "C. Blood flow would be temporarily blocked between heartbeats."Arteries gradually constrict between each heartbeat. This would allow for blood flow would be temporarily blocked between heartbeats.
The heart is an organ (rather than a tissue) because it has an important (and complex) function. Tissues don't have nearly as many things in it as the heart does.
Hope this helps! :)
Chemically straightening hair changes the shape of disulfide bonds, which alpha keratin protein; this is the second protein structure. However, as the hair continues to grow out, this keratin protein grows with it, thus outlasting the effects of the chemicals which change the shape of the protein.
