B7.2· 51 questions · 51 marks · 61 min · 2005–2025· Multiple choice
Every Cambridge IGCSE Science - Combined Paper 1 question on digestive system, laid out as 16 A4 pages with the mark scheme below. Nothing is left out. Free to read, no account.

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16 / 16Answers below. Sit the paper first if you are practising.
Pastlit
Science - Combined 0653 · Digestive system — Paper 1
IGCSE · topical answer key — answer key (teacher use)
Question
Answer
Marks
Pastlit
Science - Combined 0653 · Digestive system — Paper 1
IGCSE · topical answer key — answer key (teacher use)
Question
Answer
Marks
| Question | Answer | Marks | From |
|---|---|---|---|
| 1 | A | 1 | 0653/11 Oct/Nov 2005 |
| 2 | A | 1 | 0653/11 May/June 2006 |
| 3 | A | 1 | 0653/11 May/June 2007 |
| 4 | B | 1 | 0653/11 Oct/Nov 2010 |
| 5 | B | 1 | 0653/13 Oct/Nov 2010 |
| 6 | A | 1 | 0653/11 May/June 2011 |
| 7 | A | 1 | 0653/12 May/June 2011 |
| 8 | B | 1 | 0653/12 May/June 2012 |
| 9 | B | 1 | 0653/13 May/June 2012 |
| 10 | C | 1 | 0653/12 May/June 2013 |
| 11 | A | 1 | 0653/11 Oct/Nov 2013 |
| 12 | A | 1 | 0653/12 Oct/Nov 2013 |
| 13 | A | 1 | 0653/13 Oct/Nov 2013 |
| 14 | B | 1 | 0653/12 May/June 2014 |
| 15 | A | 1 | 0653/12 May/June 2015 |
| 16 | C | 1 | 0653/13 May/June 2015 |
| 17 | B | 1 | 0653/12 Feb/March 2017 |
| 18 | C | 1 | 0653/11 Oct/Nov 2017 |
| 19 | C | 1 | 0653/12 Oct/Nov 2017 |
| 20 | C | 1 | 0653/13 Oct/Nov 2017 |
| 21 | B | 1 | 0653/12 Feb/March 2018 |
| 22 | A | 1 | 0653/12 May/June 2018 |
| 23 | A | 1 | 0653/13 May/June 2018 |
| 24 | A | 1 | 0653/11 Oct/Nov 2018 |
| 25 | B | 1 | 0653/12 Oct/Nov 2018 |
| 26 | D | 1 | 0653/12 Feb/March 2019 |
| 27 | B | 1 | 0653/11 May/June 2019 |
| 28 | B | 1 | 0653/12 May/June 2019 |
| 29 | B | 1 | 0653/13 May/June 2019 |
| 30 | A | 1 | 0653/11 Oct/Nov 2019 |
| 31 | C | 1 | 0653/11 Oct/Nov 2019 |
| 32 | C | 1 | 0653/12 Oct/Nov 2020 |
| 33 | C | 1 | 0653/13 Oct/Nov 2020 |
| 34 | B | 1 | 0653/12 May/June 2021 |
| 35 | B | 1 | 0653/13 May/June 2021 |
| 36 | A | 1 | 0653/12 Feb/March 2022 |
| 37 | D | 1 | 0653/13 May/June 2022 |
| 38 | C | 1 | 0653/12 May/June 2023 |
| 39 | C | 1 | 0653/13 May/June 2023 |
| 40 | C | 1 | 0653/12 Oct/Nov 2023 |
| 41 | D | 1 | 0653/12 Oct/Nov 2023 |
| 42 | C | 1 | 0653/13 Oct/Nov 2023 |
| 43 | D | 1 | 0653/13 Oct/Nov 2023 |
| 44 | A | 1 | 0653/12 May/June 2024 |
| 45 | A | 1 | 0653/11 Oct/Nov 2024 |
| 46 | D | 1 | 0653/12 Feb/March 2025 |
| 47 | A | 1 | 0653/12 May/June 2025 |
| 48 | B | 1 | 0653/13 May/June 2025 |
| 49 | A | 1 | 0653/11 Oct/Nov 2025 |
| 50 | A | 1 | 0653/12 Oct/Nov 2025 |
| 51 | A | 1 | 0653/13 Oct/Nov 2025 |
5 Which diagram represents the digestion of food molecules in the alimentary canal? A B C D
1 marks
Answer: A
4 The diagram shows a section through a decaying tooth. decayed region of tooth Which parts of the tooth have decayed? A dentine and enamel B enamel and pulp cavity C pulp cavity and root D root and dentine
1 marks
Answer: A
4 The diagram shows a vertical section through an incisor in the jaw. X What is the name of the part labelled X? A cement B dentine C enamel D pulp
1 marks
Answer: A
9 What is the stimulus for insulin secretion and what is the effect of insulin on the liver? stimulus for secretion effect on the liver A high blood glucose decreased glucose uptake B high blood glucose increased glucose uptake C low blood glucose decreased glucose uptake D low blood glucose increased glucose uptake
1 marks
Answer: B
8 What is the stimulus for insulin secretion and what is the effect of insulin on the liver? stimulus for secretion effect on the liver A high blood glucose decreased glucose uptake B high blood glucose increased glucose uptake C low blood glucose decreased glucose uptake D low blood glucose increased glucose uptake
1 marks
Answer: B
8 The statements describe events that occur when glucose is absorbed from the alimentary canal. 1 Blood sugar level falls. 2 Blood sugar level rises. 3 Insulin is released. 4 Liver removes glucose from the blood. Which is the correct order of events? A 2 → 3 → 4 → 1 B 2 → 4 → 3 → 1 C 3 → 2 → 4 → 1 D 4 → 1 → 3 → 2
1 marks
Answer: A
7 The statements describe events that occur when glucose is absorbed from the alimentary canal. 1 Blood sugar level falls. 2 Blood sugar level rises. 3 Insulin is released. 4 Liver removes glucose from the blood. Which is the correct order of events? A 2 → 3 → 4 → 1 B 2 → 4 → 3 → 1 C 3 → 2 → 4 → 1 D 4 → 1 → 3 → 2
1 marks
Answer: A
5 The diagram shows the human alimentary canal. 1 2 3 4 5 6 Which numbered structures secrete chemicals that are involved in fat digestion? A 1 and 3 B 2 and 4 C 3 and 5 D 5 and 6
1 marks
Answer: B
5 The diagram shows the human alimentary canal. 1 2 3 4 5 6 Which numbered structures secrete chemicals that are involved in fat digestion? A 1 and 3 B 2 and 4 C 3 and 5 D 5 and 6
1 marks
Answer: B
5 What is a function of the small intestine? A It allows food to be stored. B It cuts food into small pieces. C It provides a large surface area for absorption. D It provides space for the storage of faeces.
1 marks
Answer: C
5 The diagram shows a section through a human tooth. Which part is made of the hardest material? A B C D
1 marks
Answer: A
5 The diagram shows a section through a human tooth. Which part is made of the hardest material? A B C D
1 marks
Answer: A
5 The diagram shows a section through a human tooth. Which part is made of the hardest material? A B C D
1 marks
Answer: A
4 The diagram shows part of the digestive system. Where does egestion occur? A D C B
1 marks
Answer: B
5 The table names some places where processes involved in animal nutrition may take place. Which row is correct? ingestion digestion A mouth mouth cavity B mouth pancreas C oesophagus ileum D oesophagus stomach
1 marks
Answer: A
9 Where in the body are hormones destroyed? A gall bladder B kidney C liver D pancreas
1 marks
Answer: C
5 Which row shows where starch is digested in the alimentary canal? duodenum liver pancreas A digested digested digested B digested not digested not digested C not digested digested not digested D not digested not digested digested
1 marks
Answer: B
6 In which order does food pass through parts of the alimentary canal? A oesophagus → colon → small intestine B small intestine → oesophagus → rectum C small intestine → rectum → anus D stomach → colon → small intestine
1 marks
Answer: C
6 In which order does food pass through parts of the alimentary canal? A oesophagus → colon → small intestine B small intestine → oesophagus → rectum C small intestine → rectum → anus D stomach → colon → small intestine
1 marks
Answer: C
5 In which order does food pass through parts of the alimentary canal? A oesophagus → colon → small intestine B small intestine → oesophagus → rectum C small intestine → rectum → anus D stomach → colon → small intestine
1 marks
Answer: C
6 The diagram shows the alimentary canal. Which label shows where bile is stored? A B C D
1 marks
Answer: B
5 The diagram shows a section through a human tooth. Which part is made of the hardest material? A B C D
1 marks
Answer: A
5 The diagram shows a section through a human tooth. Which part is made of the hardest material? A B C D
1 marks
Answer: A
6 The diagram shows part of the human alimentary canal. Where is bile made? A D B C
1 marks
Answer: A
4 The diagram shows the human alimentary canal. The labels state the functions of four of its parts. Which label is correct? A ingestion and fat digestion B short term storage and protein digestion C egestion and carbohydrate digestion D absorption and short term storage
1 marks
Answer: B
5 Which process is defined as taking substances into the body through the mouth? A absorption B digestion C egestion D ingestion
1 marks
Answer: D
5 What is a function of the small intestine? A It cuts food into small pieces. B It provides a large surface area for absorption. C It provides space for the storage of faeces. D It stores food.
1 marks
Answer: B
5 What is a function of the small intestine? A It cuts food into small pieces. B It provides a large surface area for absorption. C It provides space for the storage of faeces. D It stores food.
1 marks
Answer: B
4 What is a function of the small intestine? A It cuts food into small pieces. B It provides a large surface area for absorption. C It provides space for the storage of faeces. D It stores food.
1 marks
Answer: B
4 What is not absorbed from the alimentary canal into the blood? A fibre B glucose C mineral salts D vitamin C
1 marks
Answer: A
5 Which row shows where digestion occurs? mouth intestine intestine stomach A x v v x B v v v v Cc v x v v D v v x v
1 marks
Answer: C
7 Some undigested food passes out of the digestive system as faeces. What is this process? A absorption B digestion C egestion D ingestion
1 marks
Answer: C
4 Which label gives the correct function of that region of the alimentary canal and its associated organs? A absorption B ingestion C digestion D egestion
1 marks
Answer: C
6 Which part of the alimentary canal carries out digestion and absorption? A C B D
1 marks
Answer: B
5 Most food molecules need to be digested to allow them to be absorbed into the blood. Which row shows the type of digestion and the change needed to allow absorption to happen? type of digestion change to food molecules A chemical large molecules to small, insoluble molecules B chemical large molecules to small, soluble molecules C mechanical large molecules to small, soluble molecules D mechanical large molecules to small, insoluble molecules
1 marks
Answer: B
6 The diagram shows the alimentary canal. X Which processes take place in the region marked X? A absorption and digestion B digestion and egestion C egestion and ingestion D ingestion and absorption
1 marks
Answer: A
6 The diagram shows the human alimentary canal and associated organs. Where does egestion occur? A B C D
1 marks
Answer: D
5 In which order does food pass through parts of the alimentary canal? A oesophagus anus large intestine B small intestine oesophagus stomach C small intestine large intestine anus D stomach large intestine small intestine
1 marks
Answer: C
5 Which row matches the part of the alimentary canal to its function? part of the function of part alimentary canal A anus absorption B oesophagus digestion C mouth ingestion D small intestines egestion
1 marks
Answer: C
4 Which row correctly matches an organ of the alimentary canal with its functions? organ absorption digestion egestion ingestion A large intestine yes no no yes B oesophagus no yes yes no C small intestine yes yes no no D stomach no no yes yes
1 marks
Answer: C
5 Which process is defined as taking substances into the body through the mouth? A absorption B digestion C egestion D ingestion
1 marks
Answer: D
4 Which row correctly matches an organ of the alimentary canal with its functions? organ absorption digestion egestion ingestion A large intestine yes no no yes B oesophagus no yes yes no C small intestine yes yes no no D stomach no no yes yes
1 marks
Answer: C
5 Which process is defined as taking substances into the body through the mouth? A absorption B digestion C egestion D ingestion
1 marks
Answer: D
6 Which region of the alimentary canal carries out ingestion? A D B C
1 marks
Answer: A
5 What are the functions of the small intestine? A absorption and digestion B absorption and egestion C ingestion and digestion D ingestion and egestion
1 marks
Answer: A
7 The diagram shows the human digestive system. 1 2 3 Which row identifies structures 1, 2 and 3? 1 2 3 A trachea liver small intestine B trachea stomach large intestine C oesophagus liver large intestine D oesophagus stomach small intestine
1 marks
Answer: D
7 The diagram shows the alimentary canal and associated organs. Q P R S Which row shows the labels for parts P, Q, R and S? P Q R S A liver stomach large intestine small intestine B stomach liver small intestine large intestine C liver stomach pancreas large intestine D stomach liver pancreas small intestine
1 marks
Answer: A
8 The diagram shows part of the human alimentary canal and associated organs. W What is the organ labelled W? A gall bladder B liver C oesophagus D stomach
1 marks
Answer: B
7 Which part of the digestive system carries out both digestion and absorption? B C A D
1 marks
Answer: A
8 In the alimentary canal, chemical digestion breaks down … 1 … , … 2 … molecules. Which words complete gaps 1 and 2? 1 2 A large insoluble B large soluble C small soluble D small insoluble
1 marks
Answer: A
8 In the alimentary canal, chemical digestion breaks down … 1 … , … 2 … molecules. Which words complete gaps 1 and 2? 1 2 A large insoluble B large soluble C small soluble D small insoluble
1 marks
Answer: A