How does insulin travel around the body?

Insulin travels through the blood to your body's cells. It tells the cells to open up and let the glucose in. Once inside, the cells convert glucose into energy or store it to use later. Without insulin, your body can't use or store glucose for energy.

Explanation:

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The insulin circulates through the blood stream until it binds to an insulin receptor embedded in the cell membrane of a muscle, fat, or brain cell. Once the insulin binds to the receptor, phosphate groups are added to the intracellular domain of the receptor.

Explanation:

1. The bottom graph matches this statement, because it shows a drastic decrease in population.

2. The top graph matches this statement, because it shows most of the population surviving for quite some time.

3. The second graph matches this statement, because it shows a drastic increase in population.

4. This would be the third graph, because it shows a dramatic increase then a stabilization.