GCSE BIOLOGY AQA Respiration. EXAM REVISION QUESTIONS WITH
VERIFIED SOLUTIONS LATEST 2025 UPDATE.
Carbon Dioxide - ANSWER- The gas needed in photosynthesis and given off in respiration
Oxygen - ANSWER- The gas used in respiration and given off in photosynthesis
Glucose - ANSWER- This is needed in respiration and produced in photosynthesis and is then
used as a food source by the plant
Water - ANSWER- This is taken up by the roots of a plant and used in photosynthesis and it is
given off in respiration
Respiration - ANSWER- A chemical reaction that takes place in the mitochondria of all cells
in all living things to provide them with energy
Aerobic - ANSWER- Respiration that requires oxygen, this gives out more energy than
anaerobic respiration
Anaerobic - ANSWER- Respiration that does not require oxygen, this gives out LESS energy
that aerobic respiration
Mitochondria - ANSWER- Structures in cells where respiration takes place
Word Equation - ANSWER- An equation shown only with the names of the chemical in it -
e.g. oxygen + glucose carbon dioxide + water
CO2 - ANSWER- The chemical symbol for carbon dioxide - in the equation for photosynthesis
or respiration it always has a 6 at the front
VERIFIED SOLUTIONS LATEST 2025 UPDATE.
Carbon Dioxide - ANSWER- The gas needed in photosynthesis and given off in respiration
Oxygen - ANSWER- The gas used in respiration and given off in photosynthesis
Glucose - ANSWER- This is needed in respiration and produced in photosynthesis and is then
used as a food source by the plant
Water - ANSWER- This is taken up by the roots of a plant and used in photosynthesis and it is
given off in respiration
Respiration - ANSWER- A chemical reaction that takes place in the mitochondria of all cells
in all living things to provide them with energy
Aerobic - ANSWER- Respiration that requires oxygen, this gives out more energy than
anaerobic respiration
Anaerobic - ANSWER- Respiration that does not require oxygen, this gives out LESS energy
that aerobic respiration
Mitochondria - ANSWER- Structures in cells where respiration takes place
Word Equation - ANSWER- An equation shown only with the names of the chemical in it -
e.g. oxygen + glucose carbon dioxide + water
CO2 - ANSWER- The chemical symbol for carbon dioxide - in the equation for photosynthesis
or respiration it always has a 6 at the front