Cellular Respiration Flashcards
BE ABLE TO DRAW THE CELLULAR RESPIRATION DIAGRAM:
On whiteboard
What is glycolysis?
The breakdown of glucose to pyruvate in the cytoplasm
What happens in aerobic respiration?
Pyruvate is broken down to acetyl group and combined with coenzyme A forming acetyl coenzyme A
What happens in the citric acid cycle?
Acetyl coenzyme A combined with oxaloacetate to form citrate. A series of enzyme controlled steps happens and citrate is gradually converted back into oxaloacetete
Where does the citric acid cycle take place?
Matrix of the mitochondria
What is the electron transport chain?
It is a series of carrier proteins attached to the inner mitochondrial membrane
What removes hydrogen ions and electrons, and where do they go to form what?
Dehydrogenase enzymes removed hydrogen ions and electrons, and they pass them to the coenzyme NAD to form NADH
What is passed from the citric acid cycle to the electron transport chain?
Hydrogen ions and electrons from NADH are passed
Where does the electron transport chain occur?
Inner mitochondrial membrane
If oxygen is absent where does fermentation take place?
Cytoplasm
Draw fermentation in an animal cell:
Is it reversible or irreversible?
Glucose ➡️ Pyruvate ➡️ lactate
This is reversible
Draw fermentation in a plant and yeast cell:
Is it reversible or irreversible?
Glucose ➡️ pyruvate ➡️ ethanol ➕ CO2
What is ATP used for?
To transfer energy to cellular processes which requires energy
