L4 Sciences Blood Glucose

Which hormone directly lowers blood glucose by promoting its uptake into cells?

• Glucagon

• Insulin

• Andrenaline

• Cortisol

Glucagon is secreted by the:

• Beta (β) cells of the pancreas

• Alpha (α) cells of the pancreas

• Delta (δ) cells of the pancreas

• Adrenal medulla

The synthesis of new glucose from non-carbohydrate sources is called:

• Glycogenesis

• Gluconeogenesis

• Glycogenolysis

• Lipolysis

Type I diabetes is characterised by:

• Overproduction of insulin

• Insulin resistance
  

• Autoimmune destruction of β-cells

• Excess glucagon production

In the human body, glycogen is mainly stored in the:

• Pancreas

• Large intestine

• Liver and muscles

• Kidneys

Which “Fight or Flight” hormone can raise blood glucose levels during stress?

• Glucagon

• Insulin

• Cortisol

• Adrenaline

Glycogenesis refers to the process of:

• Breaking down glycogen to glucose

• Forming glycogen from excess glucose

• Creating new glucose molecules from proteins/fats

• Converting glucose into fatty acids

A key action of insulin in muscle and fat cells is:

• Increasing glycogen breakdown

• Blocking glucose entry

• Stimulating alpha receptor activity

• Promoting GLUT4 transporters to move to the cell membrane

Which of the following is NOT typically associated with high insulin levels?

• Lower blood glucose

• Increased glucose uptake by cells

• Enhanced glycogen storage

• Increased lipolysis

Negative feedback in blood glucose control means:

• Continual increases in hormone levels regardless of glucose concentration

• High glucose triggers even higher insulin release without limit

• A response that counteracts the initial change, returning levels to normal

• Blood glucose remains constant at one exact value