B9 - Respiration Flashcards
Respiration is the name given to the ___ reaction that happens inside every ___ of an animal’s body
a. Chloroplasts
b. Cell
What is respiration?
Respiration is the release of energy from food.
Is respiration exothermic or endothermic?
Exothermic
Word equation for respiration:
Glucose and Oxygen -> Carbon Dioxide, Water and Energy
The oxygen needed comes from the person ___
Breathing in
The ______ is removed from the body by the person ______
a. Carbon Dioxide
b. Breathing out
Breathing in and out is called?
Ventilation
Why do muscle cells have more mitochondria than fat cells?
Muscles cells have more mitochondria than fat cells because more mitochondria are in active cells.
What happens when you begin exercise?
You increase the demands on your body
What happens when we exercise?
- Heart rate increases
- Arteries supplying blood to your muscles dilate (widen)
- Breathing rate increases
- Glycogen in the muscles is converted back to glucose
Would the hear rate of a fit person be high or low?
Relatively low
Key Points of Anaerobic Respiration?
Releases less energy than aerobic respiration
Because it incompletely break down glucose
Makes lactic acid
And leaves an oxygen debt
What is one cause of muscle fatigue?
Build of lactic acid from anaerobic respiration
