Link Reaction & Krebs Cycle (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Where do the link reaction and Krebs cycle both occur in eukaryotic cells?
Where do the link reaction and Krebs cycle both occur in eukaryotic cells?
Mitochondrial matrix
How many carbon atoms does pyruvate contain before decarboxylation in the link reaction?
How many carbon atoms does pyruvate contain before decarboxylation in the link reaction?
3 carbon atoms
What molecule combines with acetate to form acetyl CoA?
What molecule combines with acetate to form acetyl CoA?
Coenzyme A (CoA)
How many CO molecules are produced per pyruvate through link reaction and Krebs cycle?
How many CO molecules are produced per pyruvate through link reaction and Krebs cycle?
3 CO molecules
What is the primary hydrogen carrier in respiration that works with dehydrogenase enzymes?
What is the primary hydrogen carrier in respiration that works with dehydrogenase enzymes?
NAD
What forms when 2-carbon acetyl CoA combines with a 4-carbon molecule in the Krebs cycle?
What forms when 2-carbon acetyl CoA combines with a 4-carbon molecule in the Krebs cycle?
A 6-carbon compound
What is regenerated at the end of each Krebs cycle to allow the process to continue?
What is regenerated at the end of each Krebs cycle to allow the process to continue?
4-carbon acceptor molecule
How is ATP produced directly during the Krebs cycle?
How is ATP produced directly during the Krebs cycle?
Substrate-level phosphorylation
What represents the main energy yield from the Krebs cycle?
What represents the main energy yield from the Krebs cycle?
Reduced coenzymes (NAD and FAD)
Which molecules can be manufactured from Krebs cycle intermediates?
Which molecules can be manufactured from Krebs cycle intermediates?
Fatty acids, amino acids, chlorophyll