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.
An experiment on the growth of a young plant shoot was set up, as shown. What does the shoot look like after 48 hours?
A scientist takes four pairs of samples from a wild cherry tree. In which pair of samples could there be cells with different genotypes?
The diagram shows how a large number of carrot plants can be produced from small pieces of carrot root. Which row is correct for this method of pla...
In plant reproduction, the following processes occur. 1 fertilisation 2 growth of a pollen tube 3 pollination 4 seed germination In which order do ...
Which hormone causes the release of an egg cell from the ovary?
The diagram shows a baby about to be born. Which labelled structures are the cervix and uterus?
In a DNA molecule, bonds between pairs of bases hold the strands together. Which pairs of bases are found in DNA? 1 A-C 2 A-G 3 A-T 4 C-G 5 C-T 6 T-G
The antibiotic penicillin is produced by a fungus called Penicillium. The graph shows the changes in the masses of Penicillium fungus, penicillin a...
The diagram shows a food chain. mahogany tree → caterpillar → songbird → hawk Which organisms are present in the largest numbers in this food chain?
Some bacteria and fungi are decomposers. What is produced when decomposers break down plant and animal protein?
What is the definition of a community?
Which structures have both cytoplasm and cell walls?
Which statement defines a species?
The diagram shows an experiment. [Figure 3.1] Why has the starch suspension changed colour?
The table shows the relative concentrations of two mineral ions in a root cell and in the water in the soil around the plant root. [Table 4.1] What...
Some health problems can be detected using chemical tests for protein and glucose in the urine. Which row shows the results for a person with prote...
Which statement describes enzyme-catalysed reactions?
The diagram shows an aphid feeding on sugar in a leaf. [Figure 7.1] When the aphid feeds, in which order do its mouthparts pass through the tissues...
For which processes do plants need either nitrate ions or magnesium ions? [Table 8.1]
Which row shows the processes involved when nitrate ions and water, from soil, enter a root hair cell? [Table 9.1]
Which change in conditions will decrease the rate of transpiration?
What are the correct definitions of digestion and assimilation? [Table 11.1]
Which organ produces an acid that kills the bacteria in ingested food?
Which table shows muscle movement during inspiration? [Table 14.1]
The diagram represents the equation for aerobic respiration. ...1... + ...2... → ...3... + ...4...... Which words correctly complete gaps 1-4?
Which row shows the names of blood vessels that transport blood to and from the liver and the kidney? [Table 18.1]
What is a pathogen?
Malaria can be controlled by the use of mosquito nets treated with insecticide, placed over beds. The use of these bed nets reduces the number of b...
Against which type of infection or disease are antibiotics effective?
The graph shows the antibody concentration in a child's blood over a period of time. It shows what happens to the antibody concentration after a ch...
Which label shows the location for the production of urea? [Figure 23.1]
A student was asked to compare a typical spinal reflex action with a voluntary action. He has made one mistake in his comparison. Which row shows t...
Descriptions of the body's response to changes in temperature are listed. 1 Arterioles in the skin surface constrict. 2 Arterioles in the skin surf...
The diagram shows how the concentration of glycogen stored in the liver of a human changes over time. The changes help to maintain a constant conce...
The diagram shows some seedlings grown in the light. [Figure 28.1] Which statement describes the distribution of auxin in the seedlings?
A plant has 20 chromosomes in its leaf cells. The plant reproduces both sexually and asexually. What is the correct number of chromosomes in the ga...
What are features of sexual reproduction? 1 fusion of diploid nuclei 2 fusion of haploid nuclei 3 production of clones 4 production of genetically ...
Which flower structure produces pollen?
The diagram shows the female reproductive system. [Figure 32.1] Which row correctly labels the diagram?
The diagram shows a fetus in the uterus. [Figure 33.1] Which structures are essential for feeding the fetus, and which structures are essential for...
Which statements are correct? 1 Each chromosome contains one molecule of DNA. 2 A gene is a section of DNA on a chromosome. 3 A gene contains small...
Three flasks were set up as shown at 35 °C. Each flask had a balloon attached to the top. [Figure 36.1] The amount of inflation of each balloon was...
The fossil fuels used as energy sources today developed from animal and plant remains buried millions of years ago. What was the initial source of ...
Which term describes the number of different species that live in an area?
Human blood has many different components and functions. [Figure 1.1]
Fig. 2.1 shows the life cycle of the plant Coffea arabica. This plant produces seeds which are used to make coffee. [Figure 2.1]
The bar chart in Fig. 3.1 shows the percentage of total human body mass for the five most common elements found in the human body. [Figure 3.1]
A sneeze can be triggered by dust irritating receptor cells in the lining of the nose or throat. During a sneeze, air is exhaled from the lungs wit...
Fig. 5.1 shows two structures found in the human digestive system. [Figure 5.1]
Fig. 6.1 shows a biological molecule. [Figure 6.1]