Respiration Flashcards
What is respiration?
A process that releases energy (in the form of ATP) from the breakdown of organic compounds (e.g glucose).
What is ATP?
•short term energy store in all cells.
•universal energy carrier
What does ATP stand for?
Adenosine triphosphate
Why must respiration occur continuously in living cells?
Energy is required for many essential processes in living cells e.g. movement, homeostasis, and active transport.
What is aerobic respiration?
Series of enzyme- controlled reactions that form ATP from the breakdown of glucose in the prescence of oxygen
Write the word equation for aerobic respiration
Glucose+Oxygen—>carbon dioxide+ water +energy
What does aerobic respiration require?
Glucose
Or another respiratory substance e.g. lipids, proteins
Oxygen
What does aerobic respiration produce?
Carbon Dioxide
Water
Energy (ATP)
What is anaerobic respiration?
Respiration that takes place without oxygen and forms ATP from the breakdown of glucose
When may anaerobic respiration take place in muscle cells?
During vigorous exercise
Write the word equation for anaerobic respiration in muscle cells
Glucose—> lactic acid+energy
Why may anaerobic respiration in muscles eventually stop?
Lactic acid build-up inhibits anaerobic respiration
What are the symptoms of lactic acid build-up?
Cramps and fatigue
What is oxygen debt?
The extra volume of oxygen that must be taken in after anaerobic respiration to break down lactic acid
Is aerobic or anaerobic respiration more efficient? Explain why.
Aerobic respiration is more efficient as it produces more molecules of ATP than anaerobic respiration
Why does anaerobic release less energy than aerobic respiration?
Glucose is only partially broken down in anaerobic respiration
