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Respiration

Learn more about respiration

QuestionAnswer
Name the process where glucose is converted into pyruvate. glycolysis
State the location of glycolysis in the cell. cytoplasm
Does glycolysis need oxygen to occur. No
Describe the process of glycolysis. Glucose is converted to pyruvate.
Explain why the energy investment step of glycolysis is necessary 2 ATP is needed to phosphorylate glucose/intermediate.
Explain what is meant by the energy pay off step of glycolysis More ATP is produced than required.
State the net energy gain during glycolysis 2 ATP
During aerobic respiration pyruvate is converted into acetyl/acetyl co A
where is pyruvate converted into acetyl in the cell matrix of mitochondria
Name the molecule that combines with acetyl in the citric acid cycle oxaloacetate
When acetyl and oxaloacetate combine, state the molecule produced. citrate/citric acid.
Describe the citric acid cycle oxaloacetate combines with acetyl to form citrate which regenerates oxaloacetate through a series of enzyme controlled st
Name the 3 molecules produced by the citric acid cycle ATP, CO2 and NADH
State the location of the citric acid cycle matrix of mitochondria
Is pyruvate to acetyl part of the citric acid cycle No
Explain the role of dehydrogenases. Remove H ions and electrons from substances and pass to NAD to form NADH
State the stages of respiration where dehydrogenases are found. Glycolysis and citric acid cycle only.
Explain the role of NAD. Accepts H ions and electrons for NAD to form NADH. NADH then takes H ions and electrons to the electron transport chain.
State the stages of respiration where NAD is found. ALL of them - glycolysis, citric acid cycle and electron transport chain,.
Describe the electron transport chain A collection of membrane proteins in the inner mitochondrial membrane.
State the first step of the electron transport chain NADH releases H ions and electrons regenerating NAD
State the role of electrons in the electron transport chain They flow ALONG the electron carriers and release energy for hydrogen ions to be pumped across the membrane.
Explain how ATP is generated in the electron transport chain (2 marks) H ions are pumped ACROSS the membrane and flow back across ATP synthase generating ATP from ADP + Pi.
State the role of oxygen in aerobic respiration Final hydrogen and electron acceptor forming water.
State which stage of respiration produces the most ATP electron transport chain
State which stages of respiration need aerobic conditions citric acid cycle and electron transport chain
Location of electron transport chain cristae/inner mitochondrial membrane
In fermentation in muscle cells pyruvate is converted into lactate
In fermenting yeast or plant cells pyruvate is converted into ethanol + carbon dioxide
Which type of fermentation is reversible Muscle/animal
Created by: brightminds
 

 



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