Question

1. if a person has diabetes and cannot make insulin, what part of the cycle would fail?

1. how do insulin and glucagon work together to keep healthy blood sugar levels?

Explanation:

1. Insulin normally promotes glucose uptake/storage. Without it, this blood sugar-lowering step fails.
2. They are antagonistic: insulin reduces high blood sugar, glucagon increases low blood sugar, maintaining balance.

Answer:

The part where insulin lowers blood sugar levels (e.g., glucose uptake by cells or conversion to glycogen) would fail.
Insulin lowers blood sugar; glucagon raises it, balancing levels.