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.
A person is sitting in a darkened room. After five seconds, a light is turned on. Five seconds after that, the light is turned off again. Which gra...
Which is an antibiotic?
The diagram shows an industrial fermenter. [Diagram for Q27] Why is sterile air essential for the microorganisms in the fermenter?
Which statement is correct for the flow of energy through an ecosystem?
The diagram shows a pyramid of biomass. [Diagram for Q29] Which percentage of biomass is passed from the primary consumer to the secondary consumer?
In which process is atmospheric nitrogen absorbed in root nodules and combined with other compounds?
Why does the oxygen concentration in a river decrease when sewage is discharged into it?
The diagram shows the development of a pollen tube and its entry into the ovule. [Diagram for Q33] Which part develops into the testa after fertili...
The diagram shows a broad bean seedling. [Diagram for Q34] From which part of the seed did structure X develop?
The diagram shows part of the male reproductive and urinary systems. [Diagram for Q35] What is X?
What are the functions of the amniotic sac and the amniotic fluid?
The inheritance of the ABO blood groups depends on three alleles I^, IB and Iº. What are the possible genotypes for a person of blood group A?
The diagram shows a pair of chromosomes from the same cell. [Diagram for Q40] What do the lines labelled P point to?
Fig. 1.1 shows a model that a student made to represent the human breathing system. clay drinking straw rubber band balloon rigid plastic cup rubbe...
Fig. 2.1 shows a magnified pollen grain from each of two plant species, A and B. magnification x830 magnification x200 pollen grain from plant spec...
Fig. 3.1a is a diagram of the human skeleton. Fig. 3.1b is an X-ray that shows damage to part of a person's skeleton. [Figure 3.1a] [Figure 3.1b] (...
Table 4.1a shows some of the recommended dietary allowances for a child under the age of six months. Table 4.1b shows part of the composition of bo...
Complete the paragraph below by writing the most appropriate word in each of the spaces. A ..................................................... in...
Syphilis is an infectious disease.
Define the term hormone.
Answer either question 8 or question 9. (a) Describe the double circulation of blood in the human circulatory system and the different functions of...
Answer either question 8 or question 9. (a) Discuss reasons for the conservation of species with reference to the management of fisheries. (b) Desc...
Two separate strains, A and B, of the same species of microorganism are used in the making of bread and beer (a drink that contains alcohol).
Fig. 2.1 shows part of the flowering head of a small tree that grows in tropical rainforests. [Figure 2.1]
Table 3.1 shows the percentage of smokers in a particular country and the number of deaths from lung cancer in that country during the years 1920 t...
Fig. 4.1 shows a section through a heart connected to what is described as an LV Assist Device. [Figure 4.1]
Sweet clover is a member of the pea and bean family (leguminous plants) that grows amongst grass in fields used for cattle feed.
As a person gets older, the lens of the eye loses its elasticity.
Describe and explain the benefits to a person of the changes that occur in the body during a physical activity such as a 400m running race.
Describe the similarities and differences between the absorption of ions in plants and the uptake of glucose in humans.
Describe the role of the mosquito in the spread of disease.
The diagram shows the direction of water movement from one cell to another in a plant root. Which cell has the higher water potential, and how does...
According to the lock and key hypothesis, what is the lock and what is the key for the enzyme lipase?
Which characteristic is the result of a deficiency of magnesium in plants?
When is carbon dioxide absorbed, and when is it released, by an ecosystem such as a tropical rainforest?
Which is essential for the healthy growth of teeth in a baby?
The diagram shows part of the alimentary canal and associated organs. Which part would contain high concentrations of glucose and amino acids, four...
After eating, the pH in the mouth decreases. Which statement explains this decrease?
The diagram shows a cut plant shoot in a container of water. What will stop the movement of water up this stem?
What are the effects of the following activities on pulse rate, when compared to resting pulse rate?
The diagram shows capillaries with the direction of movement of materials. What is happening at points 1 and 2?
Anaerobic respiration takes place when there is a lack of which substance?
Which row shows the state of the muscles when breathing out as deeply as possible?
Men sometimes develop an enlarged prostate gland. How might this affect urination?
The diagram shows the brain in vertical section. Which part is the hypothalamus?
Which structure does not have its muscles arranged antagonistically?
How do bacteria change milk into yoghurt?
Which statement describes relationships in ecosystems?
In a fish tank, bacteria recycle animal waste for plants to use. The diagram shows some of the stages in this process. What are compounds 1, 2 and 3?
Which is an example of direct action taken to maintain biodiversity?