AQA Biology paper 1 Exam With
Complete Solution Graded A+
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
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
Chloroplast - Answer Site of photosynthesis
, white blood cells - Answer Blood cells that perform the function of destroying disease-
causing microorganisms
Sperm cells - 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 - Answer energy source for photosynthesis
aorta - Answer the artery that leaves the heart from the left ventricle and carries
oxygenated blood to the body
arteries - Answer blood vessels that carry blood away from the heart. They usually carry
oxygenated blood and have a pulse
atria - Answer the upper chambers of the heart
capillaries - Answer the smallest blood vessels. They run between individual cells and
have a wall that is only one cell thick
coronary arteries - Answer the blood vessels that supply oxygenated blood to the heart
muscle
double circulatory system - Answer the circulation of blood from the heart to the lungs is
separate from the circulation of blood from the heart to the rest of the body
epidermal - Answer the name given to cells that make up the epidermis or outer layer of
an organism
guard cells - Answer surround the stomata in the leaves of plants and control their
opening and closing
haemoglobin - Answer the red pigment that carries oxygen around the body in the red
blood cells
palisade mesophyll - Answer the upper layer of the mesophyll tissue in plant leaves
made up of closely packed cells that contain many chloroplasts for photosynthesis
phloem - Answer the living transport tissue in plants that carries dissolved food (sugars)
around the plant
plasma - Answer the clear yellow-liquid part of the blood that carries dissolved
substances and blood cells around the body
platelets - Answer fragments of cells in the blood that play a vital role in the clotting
mechanism of the blood
Complete Solution Graded A+
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
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
Chloroplast - Answer Site of photosynthesis
, white blood cells - Answer Blood cells that perform the function of destroying disease-
causing microorganisms
Sperm cells - 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 - Answer energy source for photosynthesis
aorta - Answer the artery that leaves the heart from the left ventricle and carries
oxygenated blood to the body
arteries - Answer blood vessels that carry blood away from the heart. They usually carry
oxygenated blood and have a pulse
atria - Answer the upper chambers of the heart
capillaries - Answer the smallest blood vessels. They run between individual cells and
have a wall that is only one cell thick
coronary arteries - Answer the blood vessels that supply oxygenated blood to the heart
muscle
double circulatory system - Answer the circulation of blood from the heart to the lungs is
separate from the circulation of blood from the heart to the rest of the body
epidermal - Answer the name given to cells that make up the epidermis or outer layer of
an organism
guard cells - Answer surround the stomata in the leaves of plants and control their
opening and closing
haemoglobin - Answer the red pigment that carries oxygen around the body in the red
blood cells
palisade mesophyll - Answer the upper layer of the mesophyll tissue in plant leaves
made up of closely packed cells that contain many chloroplasts for photosynthesis
phloem - Answer the living transport tissue in plants that carries dissolved food (sugars)
around the plant
plasma - Answer the clear yellow-liquid part of the blood that carries dissolved
substances and blood cells around the body
platelets - Answer fragments of cells in the blood that play a vital role in the clotting
mechanism of the blood
