Aerobic respiration — Paper 1 · IGCSE Biology (9-1) 0970

21 Which row describes anaerobic respiration? energy oxygen waste products released required A a little no lactic acid B a little yes carbon dioxide and water C a lot no lactic acid D a lot yes carbon dioxide and water

1 marks

Answer: A

This question in 0970/11 May/June 2018

11 The diagram shows an experiment to investigate the balance between respiration and photosynthesis. In which tube are photosynthesis and respiration taking place at the same time? A B C D black water polythene to keep snail out light light light light pond weed

1 marks

Answer: C

This question in 0970/11 May/June 2019

22 Potted plants are left for a week in a tank of water as shown. tank water soil permeable plant pot Why do the plants die? A The roots do not have enough oxygen. B The roots do not have enough water. C The roots have too much oxygen. D The roots have too much carbon dioxide.

1 marks

Answer: A

This question in 0970/11 May/June 2019

23 The diagram shows two experiments investigating gas exchange in small aerobic crustaceans. Soda lime absorbs carbon dioxide. P Q coloured coloured liquid marker liquid marker small aerobic crustaceans wire gauze soda lime glass beads instead of soda lime Which way does the liquid marker move? P Q A left right B left stays still C right left D right stays still

1 marks

Answer: B

This question in 0970/11 May/June 2019

21 Which process releases the most energy from one molecule of glucose? A aerobic respiration B anaerobic respiration in muscle C anaerobic respiration in yeast D photosynthesis

1 marks

Answer: A

This question in 0970/12 Oct/Nov 2019

10 Four test-tubes are set up as shown. Which test-tube contains the least carbon dioxide after one hour? A B C D black water polythene to keep aquatic out light animal light light light aquatic plant

1 marks

Answer: C

This question in 0970/11 May/June 2020

20 What happens during respiration in germinating seeds? A Seed temperature decreases. B Carbon dioxide is taken up by the seeds. C Glucose is used up by the seeds. D Oxygen is given out by the seeds.

1 marks

Answer: C

This question in 0970/11 May/June 2020

19 The substances listed are associated with aerobic respiration. 1 carbon dioxide 2 glucose 3 oxygen 4 water Which substances are the products of aerobic respiration? A 1 and 3 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: B

This question in 0970/12 May/June 2020

12 The diagram shows a cell with groups of bacteria around its edge. cell cytoplasm spiral-shaped chloroplast bacteria The bacteria move to areas of high oxygen concentration. Which process in the cell causes the bacteria to form these groups? A digestion B photosynthesis C reproduction D respiration

1 marks

Answer: B

This question in 0970/12 Oct/Nov 2020

23 Which chemicals are needed to release energy in aerobic respiration? A carbon dioxide and glucose B carbon dioxide and water C oxygen and glucose D oxygen and water

1 marks

Answer: C

This question in 0970/12 Oct/Nov 2021

23 Substances involved in aerobic respiration are listed. 1 carbon dioxide 2 glucose 3 oxygen 4 water Which substances are used during aerobic respiration? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: C

This question in 0970/11 May/June 2022

24 The diagram shows the oxygen uptake by germinating seeds at two different temperatures. 0.4 key 0.3 10 °C 20 °C oxygen uptake 0.2 / cm3 0.1 0.0 0 5 10 15 20 time / minutes At which time is the oxygen uptake at 20 C four times greater than at 10 C? A 5 minutes B 10 minutes C 15 minutes D 20 minutes

1 marks

Answer: D

This question in 0970/11 May/June 2022

22 The photographs show a positive test for the presence of carbon dioxide gas. test-tube at the start test-tube at the end Which reagent is being used in the test-tube? A Benedict’s B biuret C DCPIP D limewater

1 marks

Answer: D

This question in 0970/12 May/June 2022

24 A student used this apparatus to investigate the rate of aerobic respiration in woodlice. syringe containing air scale closed tap coloured liquid test-tube woodlice granules of a chemical that absorbs carbon dioxide Which statement describes and explains the movement of the coloured liquid when the woodlice are respiring? A The coloured liquid moves towards the test-tube because the woodlice are using carbon dioxide. B The coloured liquid moves towards the test-tube because the woodlice are using oxygen. C The coloured liquid moves away from the test-tube because the woodlice are using carbon dioxide. D The coloured liquid moves away from the test-tube because the woodlice are using oxygen.

1 marks

Answer: B

This question in 0970/12 May/June 2022

24 What is the word equation for aerobic respiration? A carbon dioxide + water → glucose + oxygen B glucose + oxygen → carbon dioxide + water C glycogen + oxygen → carbon dioxide + water D water + oxygen → glucose + carbon dioxide

1 marks

Answer: B

This question in 0970/11 May/June 2023

22 Which chemical can be used to show the presence of carbon dioxide gas? A Benedict’s solution B biuret solution C ethanol D limewater

1 marks

Answer: D

This question in 0970/12 May/June 2023

23 The diagram represents the exchange of gases during breathing and during respiration in the body. oxygen oxygen in blood X Y carbon carbon dioxide dioxide in blood What is represented by X? A heart B kidneys C liver D lungs

1 marks

Answer: D

This question in 0970/12 May/June 2023

12 The diagram shows a cell with groups of bacteria around its edge. cell cytoplasm spiral-shaped chloroplast bacteria The bacteria have moved to areas of high oxygen concentration. Which process in the cell causes the bacteria to form these groups? A digestion B photosynthesis C reproduction D respiration

1 marks

Answer: B

This question in 0970/12 Oct/Nov 2023

26 What is the word equation for aerobic respiration? A carbon dioxide + glucose →oxygen + water B carbon dioxide + water →oxygen + glucose C oxygen + glucose →carbon dioxide + water D oxygen + water →carbon dioxide + glucose

1 marks

Answer: C

This question in 0970/11 May/June 2024

33 Which adaptive feature of sperm provides the energy that enables it to swim? A the acrosome B the cell membrane C the flagellum D the mitochondria

1 marks

Answer: D

This question in 0970/11 May/June 2024

5 Heart muscle cells have a high rate of metabolism. Which structure do they require to be present in high numbers? A chloroplasts B mitochondria C cell walls D vacuoles

1 marks

Answer: B

This question in 0970/12 May/June 2024

23 Which statement describes anaerobic respiration? A Anaerobic respiration in humans produces lactic acid and carbon dioxide. B Anaerobic respiration in yeast produces water and carbon dioxide. C Anaerobic respiration releases energy from glucose without using oxygen. D Anaerobic respiration releases more energy per glucose molecule than aerobic respiration.

1 marks

Answer: C

This question in 0970/12 May/June 2024

9 What is a correct statement about active transport? A Particles move into cells, using energy released by photosynthesis. B Particles move across a cell wall without using energy. C Particles move from a region of higher concentration to a region of lower concentration. D Particles move across a cell membrane, using energy released by respiration.

1 marks

Answer: D

This question in 0970/12 Oct/Nov 2024

21 The diagram shows apparatus that was used to investigate germination in seeds. wire mesh ruler coloured liquid seeds chemical which absorbs the gas produced Which other substances must be present in the test-tube for the seeds to germinate? A carbon dioxide and chlorophyll B carbon dioxide and water C chlorophyll and oxygen D oxygen and water

1 marks

Answer: D

This question in 0970/11 May/June 2025

21 Which statement is a correct comparison of aerobic respiration and anaerobic respiration in yeast? A Only aerobic respiration produces carbon dioxide. B Only anaerobic respiration produces alcohol. C They both produce water. D They both use the reactants glucose and oxygen.

1 marks

Answer: B

This question in 0970/12 May/June 2025

35 The diagram shows part of the carbon cycle. carbon dioxide 2 in atmosphere 1 waste products 4 and dead plants organisms animals 3 Which two numbered arrows represent respiration? A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4

1 marks

Answer: C

This question in 0970/12 May/June 2025

9 Which processes in plants transfer energy from light into energy in chemicals? photosynthesis respiration A yes yes B yes no C no yes D no no

1 marks

Answer: B

This question in 0970/12 Oct/Nov 2025