This unit explores in more detail the processes by which the nutrients in food become available, and how the body uses them. We will begin with digestion and absorption, and then use biochemistry to understand how the body shuttles energy and nutrients into and out of storage. A major emphasis of this unit is the concept of homeostasis with respect to blood glucose levels. We will see that the body is in a constant quest to make sure that glucose is available, and at adequate levels. We will explore the pathways the body can use to maintain homeostasis of glucose and we will understand the impacts fasting and feasting have on weight loss and weight gain.
- 2.1: What is food and where does it come from?
- 2.2: Metabolism: Glucose is the middleman for ATP
- 2.3: Glucose homeostasis in the blood (1) – Storing energy
- 2.4: Glucose homeostasis in the blood (2) – Storing energy
- 2.5: Fasting, feasting and exercise: how does it relate to homeostasis?
- 2.5 extension: Maintaining homeostasis as the demands on the body change
- Assessment opportunity: Unit 2 Quest