Glucose homeostasis

Question 1

Glucose

Answer 1

Major fuel for cellular respiration and a key source of carbon skeletons for biosynthesis

Question 2

Hormones involved in glucose homeostasis

Answer 2

Insulin and glucagon

Question 3

Role of insulin and glucagon

Answer 3

Regulate the breakdown of glycogen into glucose

Question 4

Where does glucose homeostasis occur

Answer 4

Liver

Question 5

What triggers the synthesis of glycogen

Answer 5

A carbohydrate rich meal raises insulin levels which triggers synthesis of glycogen

Question 6

What causes the release of glucose

Answer 6

Low blood sugar causes glucagon to stimulate the breakdown of glycogen and release glucose

Question 7

What type of feedback is this

Answer 7

Negative

Question 8

Steps that happen when blood glucose levels fall

Answer 8

1. Secretion of glucagon by alpha cells of the pancreas

2. Breakdown of glycogen and release glucose into blood –> blood glucose level rises to normal

Question 9

Steps that happen when blood glucose levels raise

Answer 9

1. Secretion of insulin by beta cells of the pancreas

2. Transport of glucose into body cells and storage of glucose as glycogen –> blood glucose level falls to normal