AQA Biology paper 1 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
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
, active transport—ANSWER-the movement of substances from a dilute
solution to a more concentrated solution against a concentration gradient,
requiring energy from respiration
algae—ANSWER-simple aquatic organisms (protista) that make their own
food by photosynthesis
alveoli—ANSWER-tiny air sacs in the lungs that increase the surface area
for gaseous exchange
bacteria—ANSWER-single-celled prokaryotic organisms
cell membrane—ANSWER-the membrane around the contents of a cell that
controls what moves in and out of the cell
cell wall—ANSWER-the rigid structure around plant and algal cells. It is
made of cellulose and strengthens the cell
cellulose—ANSWER-the complex carbohydrate that makes up plant and
algal cell walls and gives them strength
chlorophyll—ANSWER-the green pigment contained in the chloroplasts
chloroplasts—ANSWER-the organelles in which photosynthesis takes place
cytoplasm—ANSWER-the water-based gel in which the organelles of all
living cells are suspended and most of the chemical reactions of life take
place
diffusion—ANSWER-the spreading out of the particles of any substance in a
solution, or particles in a gas, resulting in a net movement of particles from
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
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
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
, active transport—ANSWER-the movement of substances from a dilute
solution to a more concentrated solution against a concentration gradient,
requiring energy from respiration
algae—ANSWER-simple aquatic organisms (protista) that make their own
food by photosynthesis
alveoli—ANSWER-tiny air sacs in the lungs that increase the surface area
for gaseous exchange
bacteria—ANSWER-single-celled prokaryotic organisms
cell membrane—ANSWER-the membrane around the contents of a cell that
controls what moves in and out of the cell
cell wall—ANSWER-the rigid structure around plant and algal cells. It is
made of cellulose and strengthens the cell
cellulose—ANSWER-the complex carbohydrate that makes up plant and
algal cell walls and gives them strength
chlorophyll—ANSWER-the green pigment contained in the chloroplasts
chloroplasts—ANSWER-the organelles in which photosynthesis takes place
cytoplasm—ANSWER-the water-based gel in which the organelles of all
living cells are suspended and most of the chemical reactions of life take
place
diffusion—ANSWER-the spreading out of the particles of any substance in a
solution, or particles in a gas, resulting in a net movement of particles from
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
