Cambridge & Pearson Edexcel Past Paper Questions
Browse 35,704 questions from Cambridge O-Level & A-Level and Pearson Edexcel IGCSE & IAL exams. Click any question to practice.
During a sunny day, which substance is excreted from a leaf?
Which process is not a result of negative feedback?
What is an example of a reflex arc?
Which structures cover the pupil at the front of a human eye?
The diagram shows a vertical section through the human brain. [Figure 24.1] Which structure controls balance and muscular coordination?
The graphs show changes in the percentage of smokers and number of lung cancer deaths in a country between 1950 and 2000. [Figure 25.1] What could ...
Where is penicillin produced?
Which type of organism depends directly on light energy for its nutrition?
The diagram shows the flow of substances within an ecosystem. The circles represent trophic levels. [Figure 29.1] Which circle represents herbivores?
The diagram shows part of the carbon cycle. [Figure 30.1] What are the processes X and Y?
How is malaria usually transmitted from human to human?
The diagram shows a river that flows down from the mountains to the sea. Trees are cut down and removed from the shaded area. [Figure 32.1] After a...
Which statements describe self-pollination?
A diploid cell produces further cells with a haploid number of chromosomes. Which type of cell division is involved and what is the purpose of the ...
Which row correctly pairs a hormone with its function in the menstrual cycle?
Genetic engineering can be used to introduce new characteristics into animals and plants. Which characteristic is not likely to be introduced into ...
In the ABO blood group system, which alleles are codominant?
Two black female mice were mated with the same black male. One female had nine offspring, all of which were black. The other female had six black a...
Which statement is evidence that genes are copied and passed on to the next generation?
Which organelles are found in both animal and plant cells? 1 cell membrane 2 cell wall 3 nucleus 4 sap vacuole
Which processes can only occur through a membrane? [Figure showing a table with active transport, diffusion, osmosis, and a key for yes/no]
The diagrams show a cylindrical net packed with rubber balloons full of air. The structure is used by a teacher to explain wilting. [Figure showing...
Amylase solution is tested with Benedict's solution, biuret solution and iodine solution. Which colours are obtained?
The diagram shows a magnified cross-section of part of a leaf. [Figure with leaf cross-section labeled A, B, C, D] Where does photosynthesis take p...
A leaf was picked from a plant that had been in sunlight for eight hours. [Figure showing a leaf, part white, part green] What does this leaf look ...
What is correct for the formation of urea?
The diagram shows part of the alimentary canal and associated organs. [Figure of alimentary canal with parts labeled 1, 2, 3, 4, 5] Which row corre...
What shows how the rate of transpiration changes when conditions in the atmosphere change?
What is the main cause of water moving up to the leaves in xylem vessels?
Some factors associated with coronary heart disease are listed. 1 high blood pressure 2 high intake of fruit and vegetables 3 high intake of satura...
Which statements about arteries are correct? 1 All arteries carry oxygenated blood. 2 Arteries carry blood at high pressure. 3 All arteries carry b...
The diagram shows part of the human gas exchange system. [Figure with parts labeled 1, 2, 3, 4] What are the labelled structures?
The diagram represents some of the muscles involved with breathing. [Figure with ribs, breastbone, spine, and muscles P, Q, R] Which muscles are co...
Which of these processes rely on respiration? 1 movement of water into cells 2 muscle contraction 3 protein synthesis
How do the biceps and triceps muscles cause movement at the elbow joint?
The diagram shows the human urinary system. [Figure of human urinary system with parts labeled A, B, C, D] Which labelled structure is the ureter?
What is a role of adrenaline, and where is it destroyed in the body?
The diagram shows a vertical section through the human brain. [Figure of brain section with parts labeled A, B, C, D] Which structure controls bala...
The diagram shows the equipment used in the industrial production of penicillin. [Figure of a fermenter with parts labeled X, vent, nutrients and m...
A farmer is growing wheat in a field. The farmer uses insecticides to kill insect pests and chemicals to kill weeds in the field. Which statements ...
The diagram shows some structures, Q, on the roots of a bean plant. [Figure of plant roots with structures Q] Which chemical change fixes nitrogen ...
How is malaria normally transmitted from person to person?
Which greenhouse gas is released from factory chimneys and by herbivores?
Which process in a developing seedling needs light energy?
A number of new plants are growing from pieces of a plant that have become detached and have rooted in soil. Which statement is correct about these...
Compared with the few days before ovulation, which hormone is released in increased quantities three days after ovulation?
Which statements describe an allele?
Which statements about genetic engineering to produce human insulin are correct? 1 The human insulin gene is cut out of human DNA. 2 The insulin ge...
The diagram shows the pattern of inheritance of dark hair and red hair in two families. [Figure with pedigree charts for family 1 and family 2, and...
Fig. 1.1 shows a plant with a magnified transverse section (TS) of the root and an incomplete, magnified transverse section (TS) of the stem. [Figu...