AQA GCSE COMBINED SCIENCE: TRILOGY
8464/B/1H BIOLOGY PAPER 1H PAPER
& MARK SCHEME COMPREHENSIVE
STUDY GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ anaerobic respiration.
Answer: Respiration in the absence of oxygen. This produces lactic acid.
◍ Stem call research could possibly treat:.
Answer: -Spinal cord injuries-Diabetes-Eyesight-Heart damage-Damaged
bone and cartilage
◍ Bacteria vs Virus.
Answer: Bacteria are living organisms and virus are not
◍ Amalyse.
Answer: breaks down carbs
◍ meristematic tissue.
Answer: plant tissue found only in the tips of shoots and roots; responsible
for plant growth
◍ Stage 3- Cell Cycle.
Answer: -Cytoplasm and Cell membrane split-Two identical daughter cells
◍ Alveoli.
Answer: air sacs in the lungs
◍ Malaria.
Answer: This disease is commonly associated with poverty and is spread by
, mosquitos.
◍ The site of respiration.
Answer: mitochondria
◍ limiting factors.
Answer: Conditions in the environment that put limits on where an organism
can live
◍ Photosynthesis equation.
Answer: carbon dioxide and water--- oxygen and glucose
◍ Function of muscular walls of the small intestine.
Answer: Squeeze undigested food into your large intestine
◍ aerobic respiration.
Answer: Respiration that requires oxygen
◍ Ventricles.
Answer: the two lower chambers of the heart
◍ Ph affects on enzyme activity.
Answer: interferes with the forces between proteins (where the enzyme
comes from), therefore the shape changes, and can no longer act on that site
◍ Organ Systems in our body.
Answer: Digestive system, respiratory system, and the circulatory system
◍ Enzyme activity is affected by.
Answer: temperature and pH
◍ Anaerobic respiration equation.
Answer: glucose --> lactic acid + energy
◍ palisade mesophyll.
Answer: photosynthetic tissue
◍ Stage 1- Cell Cycle.
Answer: -Longest stage-Grows bigger-Increased mass-Duplicate their
DNA-Increase number of ribosomes, mitochondria, etc. for cell divide
, ◍ Temperature factor.
Answer: the higher the temperature the higher the rate of photosynthesis, but
too much heat denature enzymes which are key in photosynthesis
◍ Alexander Flemming.
Answer: discovered penicillin
◍ Cloning.
Answer: Producing identical offspring
◍ Small intestine.
Answer: absorption of molecules into your blood
◍ Glycogen.
Answer: a substance deposited in bodily tissues as a store of carbohydrates.
◍ jobs of proteins.
Answer: structural components of tissues e.g muscleshormones e.g
insulinantibodiesenzymes
◍ Pathogen.
Answer: An organism that causes disease e.g bacteria
◍ Metabolism.
Answer: All of the chemical reactions that occur within an organism
◍ temperatures affects on enzyme activity.
Answer: Higher temperatures denature the enzyme and change the shape of
the active site
◍ needs for respiration.
Answer: -living cells need it to function-in animals, energy need to make
muscles contract-mammals and birds need to maintain their body
temperature- which they do through respiration- in plants to move minerals
and nitrates to the plant
◍ How antibiotics work.
Answer: kill bacteria while they're in your body
8464/B/1H BIOLOGY PAPER 1H PAPER
& MARK SCHEME COMPREHENSIVE
STUDY GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ anaerobic respiration.
Answer: Respiration in the absence of oxygen. This produces lactic acid.
◍ Stem call research could possibly treat:.
Answer: -Spinal cord injuries-Diabetes-Eyesight-Heart damage-Damaged
bone and cartilage
◍ Bacteria vs Virus.
Answer: Bacteria are living organisms and virus are not
◍ Amalyse.
Answer: breaks down carbs
◍ meristematic tissue.
Answer: plant tissue found only in the tips of shoots and roots; responsible
for plant growth
◍ Stage 3- Cell Cycle.
Answer: -Cytoplasm and Cell membrane split-Two identical daughter cells
◍ Alveoli.
Answer: air sacs in the lungs
◍ Malaria.
Answer: This disease is commonly associated with poverty and is spread by
, mosquitos.
◍ The site of respiration.
Answer: mitochondria
◍ limiting factors.
Answer: Conditions in the environment that put limits on where an organism
can live
◍ Photosynthesis equation.
Answer: carbon dioxide and water--- oxygen and glucose
◍ Function of muscular walls of the small intestine.
Answer: Squeeze undigested food into your large intestine
◍ aerobic respiration.
Answer: Respiration that requires oxygen
◍ Ventricles.
Answer: the two lower chambers of the heart
◍ Ph affects on enzyme activity.
Answer: interferes with the forces between proteins (where the enzyme
comes from), therefore the shape changes, and can no longer act on that site
◍ Organ Systems in our body.
Answer: Digestive system, respiratory system, and the circulatory system
◍ Enzyme activity is affected by.
Answer: temperature and pH
◍ Anaerobic respiration equation.
Answer: glucose --> lactic acid + energy
◍ palisade mesophyll.
Answer: photosynthetic tissue
◍ Stage 1- Cell Cycle.
Answer: -Longest stage-Grows bigger-Increased mass-Duplicate their
DNA-Increase number of ribosomes, mitochondria, etc. for cell divide
, ◍ Temperature factor.
Answer: the higher the temperature the higher the rate of photosynthesis, but
too much heat denature enzymes which are key in photosynthesis
◍ Alexander Flemming.
Answer: discovered penicillin
◍ Cloning.
Answer: Producing identical offspring
◍ Small intestine.
Answer: absorption of molecules into your blood
◍ Glycogen.
Answer: a substance deposited in bodily tissues as a store of carbohydrates.
◍ jobs of proteins.
Answer: structural components of tissues e.g muscleshormones e.g
insulinantibodiesenzymes
◍ Pathogen.
Answer: An organism that causes disease e.g bacteria
◍ Metabolism.
Answer: All of the chemical reactions that occur within an organism
◍ temperatures affects on enzyme activity.
Answer: Higher temperatures denature the enzyme and change the shape of
the active site
◍ needs for respiration.
Answer: -living cells need it to function-in animals, energy need to make
muscles contract-mammals and birds need to maintain their body
temperature- which they do through respiration- in plants to move minerals
and nitrates to the plant
◍ How antibiotics work.
Answer: kill bacteria while they're in your body
