Energy drinks have become increasingly popular. Somebody's trying to contain large amounts of caffeine which is known to increase heart rate in most individuals. This effect on the heart rate can be Dangerous because it can lead to

significantly increases risk of stroke, sudden cardiac arrest, and death.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.