AQA Biology paper 1 megaset
Exam Questions and Answers
100% PASS
aerobic respiration—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—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
endothermic reaction—ANSWER-a reaction that requires a transfer of energy
from the environment
exothermic reaction—ANSWER-a reaction that transfers energy to the
environment
glycogen—ANSWER-carbohydrate store in animals
lactic acid—ANSWER-the end product of anaerobic respiration in animal
cells
, oxygen debt—ANSWER-the extra oxygen that must be taken into the body
after exercise has stopped to complete the aerobic respiration of lactic acid
Mitochondria—ANSWER-Organelle that is the site of respiration
Responses to exercise—ANSWER-Heart rate increases, Breathing rate
increases, glycogen in muscles is converted to glucose
endothermic reaction—ANSWER-a reaction that requires a transfer of energy
from the environment
glucose—ANSWER-a simple sugar
limiting factors—ANSWER-limit the rate of a reaction, for example
photosynthesis
photosynthesis—ANSWER-the process by which plants make food using
carbon dioxide, water, and light
Reactants for photosynthesis—ANSWER-water and carbon dioxide
Products of photosynthesis—ANSWER-glucose and oxygen
Site of photosynthesis—ANSWER-Chloroplast
Pigment required for photosynthesis—ANSWER-Chlorophyll
Leaf adaptions for photosynthesis—ANSWER-Thin, large surface area,
spongy layer, cells with large numbers of chloroplasts.
Energy source for photosynthesis—ANSWER-light
aorta—ANSWER-the artery that leaves the heart from the left ventricle and
carries oxygenated blood to the body
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
Exam Questions and Answers
100% PASS
aerobic respiration—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—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
endothermic reaction—ANSWER-a reaction that requires a transfer of energy
from the environment
exothermic reaction—ANSWER-a reaction that transfers energy to the
environment
glycogen—ANSWER-carbohydrate store in animals
lactic acid—ANSWER-the end product of anaerobic respiration in animal
cells
, oxygen debt—ANSWER-the extra oxygen that must be taken into the body
after exercise has stopped to complete the aerobic respiration of lactic acid
Mitochondria—ANSWER-Organelle that is the site of respiration
Responses to exercise—ANSWER-Heart rate increases, Breathing rate
increases, glycogen in muscles is converted to glucose
endothermic reaction—ANSWER-a reaction that requires a transfer of energy
from the environment
glucose—ANSWER-a simple sugar
limiting factors—ANSWER-limit the rate of a reaction, for example
photosynthesis
photosynthesis—ANSWER-the process by which plants make food using
carbon dioxide, water, and light
Reactants for photosynthesis—ANSWER-water and carbon dioxide
Products of photosynthesis—ANSWER-glucose and oxygen
Site of photosynthesis—ANSWER-Chloroplast
Pigment required for photosynthesis—ANSWER-Chlorophyll
Leaf adaptions for photosynthesis—ANSWER-Thin, large surface area,
spongy layer, cells with large numbers of chloroplasts.
Energy source for photosynthesis—ANSWER-light
aorta—ANSWER-the artery that leaves the heart from the left ventricle and
carries oxygenated blood to the body
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
