The document discusses metabolism and the absorption of nutrients. It states that sugars are the major fuel for making ATP in cells, with excess being stored as glycogen or fat. Fats are used to make ATP, build myelin sheaths, and insulate organs. Proteins are rarely used for energy and are broken down into amino acids to make enzymes and structural proteins. It also describes the different types of transport involved in nutrient absorption, including passive transport mechanisms like diffusion and facilitated diffusion, as well as active transport which requires energy.

1. Metabolism (pg 12)
• Sugars: major fuel used for making ATP in
cells. Excess is stored as glycogen or fat

2. Metabolism (pg 12)
• Sugars: major fuel used for making ATP in
cells. Excess is stored as glycogen or fat
• Fats: used to make ATP, build myelin sheaths
and cell membranes, insulate and cushion
organs

3. Metabolism (pg 12)
• Sugars: major fuel used for making ATP in
cells. Excess is stored as glycogen or fat
• Fats: used to make ATP, build myelin sheaths
and cell membranes, insulate and cushion
organs
• Proteins: rarely used to make ATP. Broken
apart into amino acids which are reassembled
into enzymes and structural proteins (muscle
fibers, keratin, etc.)

4. Absorption of Nutrients (pg 12)
• Passive Transport: Does not require energy.
Substances move from high concentration to
low concentration

5. Absorption of Nutrients (pg 12)
• Passive Transport: Does not require energy.
Substances move from high concentration to
low concentration
– Diffusion: Move through cell membrane

6. Absorption of Nutrients (pg 12)
• Passive Transport: Does not require energy.
Substances move from high concentration to
low concentration
– Diffusion: Move through cell membrane
– Facilitated diffusion: Move through a channel
protein in the cell membrane

7. Absorption of Nutrients (pg 12)
• Passive Transport: Does not require energy.
Substances move from high concentration to
low concentration
– Diffusion: Move through cell membrane
– Facilitated diffusion: Move through a channel
protein in the cell membrane
• Active Transport: Requires energy. Uses carrier
proteins to move substances from low
concentration to high concentration

8. Output (pg 13)
Paste in Diagram: absorption of nutrients
Color code the Arrows
• Active transport: Purple
• Facilitated diffusion: Blue
• Diffusion: Orange
• Capillary: Red
• Lacteal: Yellow