5.2- Respiration Flashcards
(22 cards)
What is oxidation
Oxygen loss of electrons/hydrogen
Nothing what is reduction
Loss of oxygen gain of electrons/hydrogen
What is the decarboxylation and dehydrogenation
Loss of carbon/hydrogen
Where does glycolysis occur draw
In the cytoplasm
Where does the link reaction occur draw
Mitochondria
Where does the Krebs cycle occur draw
In the matrix of the mitochondria
Where does oxidative phosphorylation occur draw
On the Christie of the mitochondria
• Reduced NAD and reduced FAD release electrons and H+ ions
• The electrons move down the electron transport chain (ETC) on the cristae of the mitochondria and lose energy
• The energy is used to pump H+ ions from the matrix into the intermembrane space
• This increases the concentration of H+ ions in the intermembrane space so they diffuse through ATP synthase back into the matrix
• This causes ADP + Pi to join together to form ATP
• Oxygen is the terminal electron and H+ ion acceptor that picks up the electrons at the end of the ETC
How does oxidative phosphorylation take place
Reduced NAD and reduced every day release electrons and H plus irons the electrons move down the electron transport chain on the Christie of the mitochondria and lose energy the energy is used to pump H plus irons from the matrix into the into membrane space this increases the concentration of H plus irons in the into membrane space so they refused to ATP synthase back into the matrix this causes 80p and paid for to join together to form ATP oxygen is the terminal electron and H plus I don’t accept that picks up the victims of the end of the ETEC
What’s the role of oxygen in respiration
It is the terminal electron and hydrogen ion excepted from water
In oxidative phosphorylation introduced energy equals 380p and reduced FID equals 280p
38
How many molecules of ATP are produced by anaerobic respiration
Two in glycolysis
Write an equation to summarise alcoholic fermentation
Glucose plus ethanol no glucose equals ethanol plus carbon dioxide +280p
Draw alcoholic fermentation
Drawing
What is the role of energy in alcoholic fermentation NAD
Provides the hydrogen to reduce pyruvic to ethanol this causes energy to be re-generated
It’s an organism was the switch from aerobic respiration to alcoholic fermentation what would happen to the amount of CO2 produced in a certain amount of time
Amount of CO2 would increase because I will pick respiration is more efficient than anaerobic respiration some more ATP is produced per molecule of glucose therefore in anaerobic respiration to produce enough ATP it has to respire more glucose into the total production of more CO2
Equation to summarise lacticFermentation
Glucose plus lactic acid sorry I mean equal
Draw lactic fermentation
During
Explain how the pyruvate in later steps of anaerobic respiration allows glycolysis to continue occurring
Regenerates and 80 so energy can be used again in glycolysis NAD
Explain why aerobic respiration produces more 80p per molecule of glucose then anaerobic
Oxygen is the terminal electron exceptor so in aerobic respiration oxidative phosphorylation takes place at the end of the electron transport chain but in anaerobic respiration only glycolysis occurs
Describe how you can use DCPIP to measure the rate of respiration in
Mix east with DC PIP busy Pip is blue when it is reduced it turns colourless when respiration takes place electric release reduced DCPIP the foster it turns colourless the faster the rate
What’s the controlled experiment
Mixing with Bhuyan to East confirms that it is living use that causes DCP to change colour and not any other factors like exposure to ear ear light
How could you measure the rate of respiration east by collecting CO2
Put the solution in conical flask connect conical flask to an inverted jury or gas syringe as respiration takes place carbon dioxide gas is produced and this Kalex if respiration is occurring Arabic lead in the volume of O2 gas used is equal to the volume of CO2 gas produced meaning no net production of gas if alcoholic fermentation is occurring the note you guessed it being used up with you to being produced so that we met production of gas
