As individual cells come into contact with blood, and the blood glucose therein, they use the hormone ____ to help transport the glucose from the bloodstream into the cell, where it is then used as an energy source.

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Insulin is the hormone responsible for regulating the uptake of glucose by cells. When blood glucose levels rise, beta cells in the pancreas release insulin into the bloodstream, which stimulates cells to take up glucose and use it for energy. Without insulin, cells would be unable to use the glucose in the bloodstream, leading to high blood sugar levels and a range of health problems.

As Individual Cells Come into Contact with Blood, and the Blood