Lisa eats a banana with her breakfast. as she digests the banana, her blood glucose level increases, which causes the pancreas to produce . a few hours later, her blood glucose level decreases, signaling the pancreas to produce .

The correct answer in blank 1. Insulin, and 2. Glucagon.

Explanation:

The pancreas secretes the insulin hormone from the beta cells that lowers the blood sugar level by converting sugar to other forms.

Glucagon also released by the pancreas which has an antagonist function of insulin which is increasing the sugar level in blood. As Lisa eats banana her blood sugar level rises that signals pancreas to increase of insulin.

After a couple of hours, blood sugar level falls due to insulin that signals glucagon production which leads to an increase in the glucose level in blood.

Thus, the correct answer is - insulin and glucagon

the scientific method.