Pearson Edexcel International GCSE in Biology · 4BI1 · Free · no account needed
Respiration and ATP — exam questions
10 original Incandio exam-style questions on Respiration and ATP, 24 marks, about 24 minutes of writing. Each one carries the command word, the tariff and the specification statement it assesses, exactly as a paper presents them. This is an original Incandio practice question, written to reflect the structure and demands of the qualification. It is not an official Pearson Edexcel past-paper question.
This is the practice set for Respiration and ATP — the lesson that teaches it. Read the lesson first if the idea is new; come here when you want to find out whether you can turn it into marks. Completely free, no account needed to read.
What these questions ask of you
8 command words run through this set, and on Pearson Edexcel International GCSE Biology each one means something precise. Answering the wrong command is the commonest way a candidate who understands the lesson still loses the mark.
- Which (1 mark)
- one option chosen from the set given
- State (1 mark)
- one precise fact, no justification
- Complete (1–5 marks)
- the missing entries in a table, diagram or sentence
- Give (1–2 marks)
- a short factual answer drawn from recall or from the data
- Explain (2–4 marks)
- a causal chain — WHY it happens, each link a separate marking point Misread as: describing what happens without giving the reason it happens
- Suggest (1–3 marks)
- a plausible answer applying taught biology to a situation not taught
- Calculate (1–3 marks)
- a numerical answer, with working where the tariff implies steps
- Design (4–6 marks)
- a workable method: variables, control, measurement, repeats
Assessed on Paper 1 (4BI1/1B) and Paper 2 (4BI1/2B), against AO1, AO2, AO3.
Where these sit in the specification
Pearson Edexcel International GCSE Biology (4BI1) — statements 2.34 · 2.35 · 2.37. Incandio is aligned to this specification; it is not published by, endorsed by or affiliated with Pearson, and it reproduces none of Pearson's wording.
The 10 questions
Answer them on paper, then open the lesson's exam practice to have them marked. The mark scheme, the accepted and rejected answers and the annotated model answer are in Incandio and are not printed here — an answer beside its question is not practice.
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A runner's oxygen consumption is measured while she runs on a treadmill. At a gentle pace she uses 1.2 dm³ of oxygen per minute. When the treadmill speed is doubled she uses 2.9 dm³ per minute, and her muscles feel warmer.
(a)
(2)Calculate
Calculate the percentage increase in the runner's oxygen consumption when the treadmill speed is doubled. Give your answer to 3 significant figures.
A runner's oxygen consumption is measured while she runs on a treadmill. At a gentle pace she uses 1.2 dm³ of oxygen per minute. When the treadmill speed is doubled she uses 2.9 dm³ per minute, and her muscles feel warmer.
percentage increase = ............................ %
(b)
(2)Explain
Explain why the runner's oxygen consumption rises when she runs faster.
A runner's oxygen consumption is measured while she runs on a treadmill. At a gentle pace she uses 1.2 dm³ of oxygen per minute. When the treadmill speed is doubled she uses 2.9 dm³ per minute, and her muscles feel warmer.
(c)
(2)Suggest
Suggest why her muscles feel warmer while she is running.
A runner's oxygen consumption is measured while she runs on a treadmill. At a gentle pace she uses 1.2 dm³ of oxygen per minute. When the treadmill speed is doubled she uses 2.9 dm³ per minute, and her muscles feel warmer.
(Total for Question 1 = 6 marks)
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(1)Which
Which organisms carry out respiration?
Organisms A animals only B animals and fungi only C all living organisms D all organisms except plants (Total for Question 2 = 1 mark)
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(1)State
State what the letters ATP stand for.
(Total for Question 3 = 1 mark)
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(2)Complete
Complete the word equation for aerobic respiration: glucose + __________ → __________ + __________
(Total for Question 4 = 2 marks)
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(2)Give
Give the balanced symbol equation for aerobic respiration.
(Total for Question 5 = 2 marks)
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(3)Explain
Explain why a cell makes ATP rather than using the energy in glucose directly.
(Total for Question 6 = 3 marks)
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(3)Suggest
A poison stops mitochondria working but leaves the rest of the cell undamaged. Suggest why a cell treated with it dies within minutes.
(Total for Question 7 = 3 marks)
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(6)Design
Design an experiment to compare the rate of respiration of germinating peas at two different temperatures.
(Total for Question 8 = 6 marks)
Have them marked, then defend the answer
Practice tells you the mark; teaching it back tells you whether you understand it. On Incandio a topic counts as mastered only once you have taught it and defended it.
- Mark these questions — 10 questions, marked on Incandio against the authored scheme, with the mistake you actually made named.
- Teach it — explain Respiration and ATP to Ember, an AI pupil who does not have it yet and asks the awkward question.
- Defend it — argue it against Antoine Lavoisier over three rounds, marked against descriptors you can read first.
Completely free. No subscriptions, no paywalls, no account needed to start.
Back to the lesson
- Respiration and ATP — What respiration is actually for, why every living cell does it every second, and why breathing is not the same thing at all.
- All of Incandio Biology · Incandio Exam Practice