A2 Blood Glucose Control

What is the primary role of glucose in organisms?

• It serves as a signaling molecule.

• It acts as a structural component of cells.

• It is used primarily to synthesize proteins.

• It is a substrate for respiration providing energy.

Which organ is key in controlling blood glucose concentration?

• Pancreas

• Kidney

• Liver

• Heart

What hormone does the pancreas secrete to lower blood glucose levels?

• Glucagon

• Cortisol

• Adrenaline

• Insulin

What process converts excess glucose into glycogen in the liver?

• Glycogenolysis

• Gluconeogenesis

• Glycogenesis

• Lipogenesis

What triggers the secretion of insulin?

• A decrease in blood glucose levels.

• A rise in blood glucose levels.

• A decrease in blood pressure.

• A rise in blood adrenaline levels.

What is the effect of insulin on glucose transport proteins?

• It removes them from the cell surface.

• It deactivates them.

• It changes their shape to allow more glucose into cells.

• It decreases their number on the cell surface.

What is the role of glucagon when blood glucose levels are low?

• It stimulates glycogen synthesis.

• It decreases glucose uptake by cells.

• It stimulates glycogen breakdown and glucose release.

• It inhibits glucose production.

Which hormone is involved in the 'second messenger model'?

• Estrogen

• Adrenaline

• Glucagon

• Insulin

What is Type I diabetes caused by?

• Overproduction of insulin

• Lack of insulin production

• Overproduction of glucagon

• Lack of glucagon production

How is Type II diabetes initially treated?

• Insulin injections

• Dietary changes and exercise

• Glucagon injections

• Surgery