Respiration Flashcards
What is ATP?
The molecule that the energy from our food is trapped inside of
What does ATP do
ATP provides the energy for many different processes in living organisms
What is the symbol equation for aerobic respiration (aerobic meaning with oxygen)
C6H12O6 + 6O2 = 6CO2 + 6H2O
Why do the muscles start using anaerobic respiration instead of aerobic respiration?
Despite increase in breathing and heart rate, the muscles do not recieve sufficient oxygen
What is the word equation for anaerobic respiration?
Glucose = lactic acid (+energy)
What are two main disadvantages that anaerobic respiration holds over aerobic respiration?
- the lactic acid made by anaerobic respiration builds up in muscles, causing pain and fatigue
- anaerobic respiration releases much less energy per glucose molecule than aerobic does
What is oxygen debt?
The incomplete breakdown of glucose resulting in the build up of lactic acid
Why during recovery, do the breathing and the heart rate stay high?
- as the rapid blood flow can carry the lactic acid away to the liver
- extra oxygen can be supplied - enabling the liver to break down the lactic acid
How can we measure the rate of respiration?
- measuring how much oxygen is used up - faster it is consumed, the faster the reaction rate
- the rate at which carbon dioxide is made
What does the equation carbon dioxide produced/oxygen used calculate?
The respiratory quotient
What is the metabolic rate?
The sum of all the reaction that are occuring in the body
What does it mean when the metabolic rate is high?
More oxygen is needed
Why can changes in temperature and pH also affect respiration rates?
Because they effect enzymes and respiration is controlled by enzymes
Why is respiration important as what is its job?
Respiration releases energy from food
