AQA Biology paper 1 Question And Answers 2025\2026
aerobic respiration - CORRECT ANSWER-an exothermic reaction in which glucose is broken down
using oxygen to produce carbon dioxide and water and release energy for the cells
anaerobic respiration - CORRECT ANSWER-an exothermic reaction in which glucose is broken
down in the absence of oxygen to produce lactic acid in animals and ethanol and carbon dioxide
in plants and yeast. A small amount of energy is transferred for the cells
exothermic reaction - CORRECT ANSWER-a reaction that transfers energy to the environment
glycogen - CORRECT ANSWER-carbohydrate store in animals
lactic acid - CORRECT ANSWER-the end product of anaerobic respiration in animal cells
oxygen debt - CORRECT ANSWER-the extra oxygen that must be taken into the body after
exercise has stopped to complete the aerobic respiration of lactic acid
Mitochondria - CORRECT ANSWER-Organelle that is the site of respiration
Responses to exercise - CORRECT ANSWER-Heart rate increases, Breathing rate increases,
glycogen in muscles is converted to glucose
, endothermic reaction - CORRECT ANSWER-a reaction that requires a transfer of energy from the
environment
glucose - CORRECT ANSWER-a simple sugar
limiting factors - CORRECT ANSWER-limit the rate of a reaction, for example photosynthesis
photosynthesis - CORRECT ANSWER-the process by which plants make food using carbon
dioxide, water, and light
Reactants for photosynthesis - CORRECT ANSWER-water and carbon dioxide
Products of photosynthesis - CORRECT ANSWER-glucose and oxygen
Chloroplast - CORRECT ANSWER-Site of photosynthesis
white blood cells - CORRECT ANSWER-Blood cells that perform the function of destroying
disease-causing microorganisms
Sperm cells - CORRECT ANSWER-It has a long tail and a streamlined head to help it swim. There
are a lot of mitochondria in the cell to provide the energy needed. It also carries enzymes in its
head to digest through the egg cell membrane.
light - CORRECT ANSWER-energy source for photosynthesis
aorta - CORRECT ANSWER-the artery that leaves the heart from the left ventricle and carries
oxygenated blood to the body
aerobic respiration - CORRECT ANSWER-an exothermic reaction in which glucose is broken down
using oxygen to produce carbon dioxide and water and release energy for the cells
anaerobic respiration - CORRECT ANSWER-an exothermic reaction in which glucose is broken
down in the absence of oxygen to produce lactic acid in animals and ethanol and carbon dioxide
in plants and yeast. A small amount of energy is transferred for the cells
exothermic reaction - CORRECT ANSWER-a reaction that transfers energy to the environment
glycogen - CORRECT ANSWER-carbohydrate store in animals
lactic acid - CORRECT ANSWER-the end product of anaerobic respiration in animal cells
oxygen debt - CORRECT ANSWER-the extra oxygen that must be taken into the body after
exercise has stopped to complete the aerobic respiration of lactic acid
Mitochondria - CORRECT ANSWER-Organelle that is the site of respiration
Responses to exercise - CORRECT ANSWER-Heart rate increases, Breathing rate increases,
glycogen in muscles is converted to glucose
, endothermic reaction - CORRECT ANSWER-a reaction that requires a transfer of energy from the
environment
glucose - CORRECT ANSWER-a simple sugar
limiting factors - CORRECT ANSWER-limit the rate of a reaction, for example photosynthesis
photosynthesis - CORRECT ANSWER-the process by which plants make food using carbon
dioxide, water, and light
Reactants for photosynthesis - CORRECT ANSWER-water and carbon dioxide
Products of photosynthesis - CORRECT ANSWER-glucose and oxygen
Chloroplast - CORRECT ANSWER-Site of photosynthesis
white blood cells - CORRECT ANSWER-Blood cells that perform the function of destroying
disease-causing microorganisms
Sperm cells - CORRECT ANSWER-It has a long tail and a streamlined head to help it swim. There
are a lot of mitochondria in the cell to provide the energy needed. It also carries enzymes in its
head to digest through the egg cell membrane.
light - CORRECT ANSWER-energy source for photosynthesis
aorta - CORRECT ANSWER-the artery that leaves the heart from the left ventricle and carries
oxygenated blood to the body
