UNIT 2: Key area 2 - cellular respiration Flashcards
Describe the role which ATP plays in the transfer of energy
Energy is released from ATP when the end phosphate is removed
One ATP has released energy it becomes ADP which is a low energy molecule
What is cellular respiration
The breakdown of glucose and other respiratory substrates make energy carrying molecules (ATP)
What is ATP
Transfer energy to cellular process which require energy
What is the main substrate within the respiration pathway
Glucose
Glucose is what in terms of metabolic pathways of cellular respiration
main substrate within the respiration pathway
Name the three metabolic pathways involved in respiration
Glycolysis
Citric acid cycle
Electron transport chain
What occurs in the cytoplasm
Glycolysis
Where does glycolysis occur
Cytoplasm
What occurs in the matrix of the mitochondria
Citric acid cycle
Where does the citric acid cycle occur
Matrix of mitochondria
Electron transport chain where does this occur
Inner membrane of mitochondria
Electron transport chain where does this occur
Inner montane of mitochondria
What occurs in the inner membrane of mitochondria
Electron transport chain
What is glycolysis
Breakdown of glucose into two pyruvate molecules in the cytoplasm
Does glycolysis require oxygen
No
The production of pyruvate from glucose involves what ?
Production of several intermediate molecules
What is required for glycolysis
2 ATP
Break down of glucose into pyruvate results in what
Nat gain of 2 ATP
Dehydrogenase enzymes remove hydrogen ions and electrons from intermediates of this cycle
Which are passed to ?
Coenzyme NAD
Dehydrogenase enzymes remove what ?
Hydrogen ions and electrons from intermediates of this circle
What is reduced during glycolysis
2NADH
What happens after glycolysis if oxygen is available
Pyruvate molecules progress into the citric acid cycle
What happens after
Glycolysis if no oxygen is available
Pyruvate undergoes fermentation
What is the first stage in glycolsis called
Energy investment phase
