Question

1. fill in the blanks. if blood sugar is too high, the hormone ____ is released. if blood sugar is too low, ____ is released.

a. glucose; glucagon
b. glucagon; insulin
c. insulin; glucagon

Explanation:

To solve this, we recall the roles of insulin and glucagon:

• When blood sugar (glucose) is too high, the pancreas releases insulin to lower blood sugar (by promoting glucose uptake, storage, etc.).
• When blood sugar is too low, the pancreas releases glucagon to raise blood sugar (by breaking down glycogen into glucose).

Now let's analyze the options:

• Option a: "glucose; glucagon" – Glucose is the blood sugar, not the hormone released when blood sugar is high. So this is incorrect.
• Option b: "glucagon; insulin" – Glucagon raises blood sugar (released when low), insulin lowers it (released when high). This swaps their roles, so incorrect.
• Option c: "insulin; glucagon" – Insulin is released when blood sugar is high (to lower it), glucagon when low (to raise it). This matches the correct hormonal responses.

Answer:

c. insulin; glucagon