U3 AOS1 P6 Cellular Respiration Flashcards
Name the 3 stages of Aerobic Respiration in order
1) Glycolysis
2) The Krebs Cycle
3) Electron Transport Chain
What is the purpose of Glycolysis?
To break down Glucose molecules into 2 Pyruvate molecules for the next stage which also releases 2 ATP.
What is the purpose of The Krebs Cycle?
To obtain mass amounts of high energy electrons from hydrogen ions for the next stage
What is the purpose of The Electron Transport Chain?
To use the hydrogen ions and high energy electrons to phosphorylate ADP molecules into ATP molecules
What is Cellular Respiration?
The process of transferring energy from organic compounds like glucose into usable energy for cells ATP.
What are the 2 types of Cellular Respiration?
Aerobic Respiration and Anaerobic Respiration
What is Aerobic Respiration?
Form of Cellular Respiration which requires oxygen to be present in order for it to occur.
What briefly happens in Aerobic Respiration?
Glucose molecules are oxidised to form Carbon Dioxide and Water,
What are Mitochondria?
They are organelles which contain 2 membranes, the inner of which folds to form cristae, and the matrix contains enzymes.
What occurs in Mitochondria?
They are the site of Aerobic Respiration
Name 3 pieces of evidence which suggest Mitochondria came to be as a result of Endosymbiosis.
1) Mitochondria have their own ribosomes, suggesting they are their own organism.
2) Mitochondrial has its own DNA which is circular, like bacterial DNA.
3) Reproduce via binary fission, not from the cells genetics.
Where does Glycolysis occur?
Cytosol of Cells
What are the 3 INPUTS of Glycolysis?
Glucose
NAD+
ADP + P
What are the 3 OUTPUTS of Glycolysis?
Pyruvate
NADH
2 ATP (net)
What is the Krebs Cycle also known as?
The Citric Acid Cycle
