AQA GCSE COMBINED SCIENCE: TRILOGY
8464/B/2F BIOLOGY PAPER 2F 8464/B/2F
PAPER & MARK SCHEME
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Which hormone is secreted when blood glucose is too high?.
Answer: Insulin
◍ Name three specialised animal cells.
Answer: Sperm, Nerve, Muscle
◍ What does adrenaline do to heart rate?.
Answer: Increases it
◍ Availability of food, new predators, mates are examples of.
Answer: biotic factors
◍ How much genetic material is present in cells produced by meiosis?.
Answer: Half of that in the parent cell.
◍ What does bile do?.
Answer: Neutralised hydrochloric acid in the stomach, emulsifies fats into
small droplets to increase surface area
◍ Receptors.
Answer: process stimuli
◍ What is phloem?.
Answer: A hollow tube that transports food between the roots and the stem
and leaves
,◍ What do platelets do?.
Answer: Help blood clot
◍ The scientific term for sperm and eggs.
Answer: gametes
◍ Is bile acidic or alkaline?.
Answer: Alkaline
◍ What is a malignant tumour?.
Answer: Cancers that invade neighbouring tissues and spread to different
parts of the body in blood
◍ What are the symptoms of salmonella poisoning?.
Answer: Fever, abdominal cramps, vomiting, diarrhoea
◍ H What is oxygen debt?.
Answer: The amount of extra oxygen a body needs after exercise to react to
with the accumulated lactic acid and remove it from the cells
◍ Inter uterine devices prevent.
Answer: a fertilised egg from implanting in the uterus
◍ How can bacteria make a person feel ill?.
Answer: By producing toxins that damage cells and tissues
◍ What are antibiotics?.
Answer: Medicines that help to cure bacterial disease by killing infective
bacteria inside the body
◍ Antibiotic resistance has been caused by.
Answer: overuse of antibiotics
◍ Type 2 diabetes can be controlled by.
Answer: diet
◍ What happens to proteins during metabolism?.
Answer: Broken down into urea for excretion
, ◍ Name the four defence systems in the human body.
Answer: Skin, nose, trachea and bronchi, stomach
◍ What is photosynthesis?.
Answer: An endothermic reaction in which energy is transferred from the
environment to the chloroplasts by light
◍ How is glucose stored in the body?.
Answer: As glycogen in the liver
◍ Hormones are secreted by.
Answer: glands
◍ Name five uses of glucose produced by photosynthesis.
Answer: Respiration, conversion into insoluble starch for storage, to produce
fat or oil for storage, to produce cellulose, to produce amino acids for
protein synthesis
◍ The geneotype has 2 different alleles.
Answer: heterozygous
◍ What is salmonella?.
Answer: Food poisoning spread by bacteria ingested in food or on food
prepared in unhygienic conditions
◍ Nerve cells have a long cell body to.
Answer: carry nervous impulses over long distances
◍ Gametes in a plant.
Answer: pollen and eggs
◍ A risk factor for type 2 diabetes is.
Answer: obesity
◍ What is a tissue?.
Answer: A group of cells with similar structure and function
◍ The gas taken in by plants.
Answer: carbon dioxide
8464/B/2F BIOLOGY PAPER 2F 8464/B/2F
PAPER & MARK SCHEME
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Which hormone is secreted when blood glucose is too high?.
Answer: Insulin
◍ Name three specialised animal cells.
Answer: Sperm, Nerve, Muscle
◍ What does adrenaline do to heart rate?.
Answer: Increases it
◍ Availability of food, new predators, mates are examples of.
Answer: biotic factors
◍ How much genetic material is present in cells produced by meiosis?.
Answer: Half of that in the parent cell.
◍ What does bile do?.
Answer: Neutralised hydrochloric acid in the stomach, emulsifies fats into
small droplets to increase surface area
◍ Receptors.
Answer: process stimuli
◍ What is phloem?.
Answer: A hollow tube that transports food between the roots and the stem
and leaves
,◍ What do platelets do?.
Answer: Help blood clot
◍ The scientific term for sperm and eggs.
Answer: gametes
◍ Is bile acidic or alkaline?.
Answer: Alkaline
◍ What is a malignant tumour?.
Answer: Cancers that invade neighbouring tissues and spread to different
parts of the body in blood
◍ What are the symptoms of salmonella poisoning?.
Answer: Fever, abdominal cramps, vomiting, diarrhoea
◍ H What is oxygen debt?.
Answer: The amount of extra oxygen a body needs after exercise to react to
with the accumulated lactic acid and remove it from the cells
◍ Inter uterine devices prevent.
Answer: a fertilised egg from implanting in the uterus
◍ How can bacteria make a person feel ill?.
Answer: By producing toxins that damage cells and tissues
◍ What are antibiotics?.
Answer: Medicines that help to cure bacterial disease by killing infective
bacteria inside the body
◍ Antibiotic resistance has been caused by.
Answer: overuse of antibiotics
◍ Type 2 diabetes can be controlled by.
Answer: diet
◍ What happens to proteins during metabolism?.
Answer: Broken down into urea for excretion
, ◍ Name the four defence systems in the human body.
Answer: Skin, nose, trachea and bronchi, stomach
◍ What is photosynthesis?.
Answer: An endothermic reaction in which energy is transferred from the
environment to the chloroplasts by light
◍ How is glucose stored in the body?.
Answer: As glycogen in the liver
◍ Hormones are secreted by.
Answer: glands
◍ Name five uses of glucose produced by photosynthesis.
Answer: Respiration, conversion into insoluble starch for storage, to produce
fat or oil for storage, to produce cellulose, to produce amino acids for
protein synthesis
◍ The geneotype has 2 different alleles.
Answer: heterozygous
◍ What is salmonella?.
Answer: Food poisoning spread by bacteria ingested in food or on food
prepared in unhygienic conditions
◍ Nerve cells have a long cell body to.
Answer: carry nervous impulses over long distances
◍ Gametes in a plant.
Answer: pollen and eggs
◍ A risk factor for type 2 diabetes is.
Answer: obesity
◍ What is a tissue?.
Answer: A group of cells with similar structure and function
◍ The gas taken in by plants.
Answer: carbon dioxide
