Respiration (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is anaerobic respiration?
What is anaerobic respiration?
Energy release from molecules without O₂
Which respiratory pathway continues when oxygen is unavailable?
Which respiratory pathway continues when oxygen is unavailable?
Glycolysis only
What is the primary purpose of fermentation pathways?
What is the primary purpose of fermentation pathways?
To recycle NAD and keep glycolysis running
How many ATP molecules are produced per glucose in anaerobic respiration?
How many ATP molecules are produced per glucose in anaerobic respiration?
2
Which enzyme catalyses the conversion of pyruvate to lactate?
Which enzyme catalyses the conversion of pyruvate to lactate?
Lactate dehydrogenase
What happens when lactate accumulates in muscle cells?
What happens when lactate accumulates in muscle cells?
pH decreases, inhibiting muscle function
What happens to pyruvate in ethanol fermentation?
What happens to pyruvate in ethanol fermentation?
It undergoes decarboxylation, releasing CO₂
How many CO₂ molecules are released per glucose in lactate fermentation?
How many CO₂ molecules are released per glucose in lactate fermentation?
0
Where does ethanol fermentation occur?
Where does ethanol fermentation occur?
In yeast, fungi, and plant cells
How are anaerobic conditions created in a yeast respiration experiment?
How are anaerobic conditions created in a yeast respiration experiment?
Use boiled/cooled water and add oil layer