Memory Anchor:

• Most respiration happens in the mitochondria of a cell.

Super Challenge:

Stretch:

Challenge:

Key Questions:

1. Why do cells require energy?
   • Cells require Energy in order to fulfill their function.
2. How do cells obtain energy?
   • All Cells obtain Energy through respiration.
3. Where in a cell does most respiration happen in a cell?
   • Most respiration happens in the mitochondria of a Cell.
4. What is respiration in terms of particles?
   • Respiration is the breaking breakdown of large Particles which contain lots of Energy into smaller Particles containing less Energy. The extra Energy is released from the chemical reaction is used by the Cell.
5. In terms of energy, what type of reaction is respiration?
   • Respiration is an exothermic reaction.
6. What do cells need for respiration?
   • For respiration Cells need Glucose (sugar) and oxygen.
7. What is the most common type of respiration in plants and animals?
   • Most animals and plants do respiration using oxygen. This is called aerobic respiration.
8. What is the word equation for aerobic respiration?
   • Aerobic respiration can be represented as Glucose plus Oxygen => Carbon Dioxide plus Water ( plus Energy )
9. Why do cells switch the type of respiration they are doing?
   • When there isn't enough oxygen, Cells can't do aerobic Energy. Instead Cells do anaerobic respiration.
10. What is the word equation for anaerobic respiration?
    • Anaerobic respiration can be represented as Glucose => Lactic acid ( plus Energy )
11. Why do most plants and animals do aerobic respiration, rather than anaerobic?
    • Anaerobic respiration releases less Energy than aerobic Energy.
12. What effect does Lactic acid have?
    • Lactic acid causes a burning sensation in the muscle and possibly cramps.
13. How do we get rid of Lactic acid?
    • To get rid of the Lactic acid, it must be combined with oxygen to convert it back into water and carbon dioxide.