Respirtation Flashcards
What are the four stages of respiration?
Glycolysis, Link reaction, Krebs cycle and Oxidative phosphorylation
What is produced in The Link reaction?
2 x acetyl coA, 2 x CO2, 2 x Reduced NAD
What is produced in the krebs cycle?
1 x reduced FAD, 3 x reduced NAD, 1 x coenzyme A, 1 x ATP, 1 x 4 carbon molecule
What is produced in Glycolysis?
2 x ATP, 2 x pyruvate and 2 x reduced NAD
What happens in glycolysis?
glucose is phosphorylated into glucose phosphate. Then again into hexose bisphosphate, then split into 2 x triose phosphate. Then converted into 2 x pyruvate.
What happens in the Link reaction?
Pyruvate is oxidised to form acetate. The acetate links with CoA to form acetyl coA, NAD is reduced.
What happens in the Krebs cycle?
Acetyl coA is joined with a 4C molecule to from citrate (6C). CoA is sent back to Link reaction. Citrate is converted into a 5C molecule. Decarboxylation occurs forming CO2. Dehydrogenation occurs forming H which reduces NAD. Then 5C mol converted into 4C mol. Decarboxylation and dehydrogenation occurs producing 2 x rNAD and 1 x RFAD. ATP is produced.
Where does glycolysis happen?
Cytoplasm
Where does Link, Krebs and OP happen?
Matrix of the mitochondria
What type of molecule is NAD and FAD?
A Coenzyme
Why do Krebs and Link happen twice for every glucose molecule?
Because each glucose molecule produces 2 x pyruvate.
What is decarboxylation?
Removal of Carbon.
What is dehydrogenation?
Removal of Hydrogen.
In anaerobic respiration, what is pyruvate converted into in plants and yeast?
Ethanol
In anaerobic respiration, what is pyruvate converted into in animals?
Lactate
