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.
The graph shows changes in a person's body temperature plotted against time. [Figure 22.1] What could cause the changes in body temperature in peri...
The diagram shows a cross-section of the human brain. [Figure 23.1] If structure X is damaged, which body functions may be affected?
Which diagram shows how light from a distant object is focused on the retina to form a clear image? [Figure 24.1]
The graph shows the changing blood glucose concentration in one person over 24 hours. [Figure 25.1] Which statement explains the shape of the graph?
What happens when the triceps muscle of the forelimb begins to contract?
A patient has a bacterial infection. A sample of the bacteria is taken to identify which antibiotic to use for this patient. The sample from the pa...
Which rows show some of the structures found in bacteria, fungi and viruses?
The graph shows the mass of Penicillium grown in a fermenter and the mass of antibiotic produced. [Figure 29.1] When is the Penicillium producing a...
The diagram shows the nitrogen cycle. [Figure 30.1] In which stages of the nitrogen cycle are nitrogen-fixing bacteria important?
Malaria is spread by the ......1...... which acts as a ......2...... for the disease. Which terms correctly complete the sentence?
What increases in the long term as a result of tropical deforestation?
The diagram shows a section through a bean seed. [Figure 33.1] Which labelled part is the testa?
Which row shows the two hormones that are necessary for ovulation to occur?
The diagram shows the female reproductive system. [Figure 35.1] Where does fertilisation take place?
The diagram shows a developing fetus in the uterus. [Figure 36.1] What is the liquid at X called?
Which human feature shows discontinuous variation?
Albinism is an inherited condition, caused by a recessive allele. The diagram shows a family tree for a family affected by this condition. [Figure ...
The number of weed plants in a grass field was counted at monthly intervals. The table shows the results. [Figure 39.1] Since August 2020, the fiel...
Human insulin genes can be inserted into bacteria. The bacteria can then be cultured and will produce human insulin as a by-product. What is an adv...
The diagram shows a plant cell. The cell is stained with iodine solution. After staining with iodine solution, what are the colours of the cell wal...
Xylem vessels are cells that have become adapted for conduction and support. Which two adaptations assist them in these functions?
What is diffusion?
Amylase is an enzyme that breaks down starch to maltose. Students set up an experiment to investigate the effect of different temperatures on the a...
Which statement identifies the optimum (best) temperature for enzyme activity?
Which row shows the effect of nitrate ions on plant growth and the reason for this effect?
The experiment shown was set up and left for 30 minutes. The membrane is permeable to sugar and water but not permeable to starch or protein. After...
Sometimes gall bladders become infected and have to be surgically removed. How will this affect the functioning of the body?
A student set up an experiment to investigate the rate of transpiration in a plant. The student set up two identical sets of apparatus. One was pla...
Which blood vessels, linked directly to the heart, transport deoxygenated blood?
The diagram shows the right side of the human heart when the ventricle is relaxed. Which row describes the positions of valve X and valve Y when th...
Which component of the blood stimulates the formation of fibres to help seal a wound?
The diagram shows a cell. Which process in the cell is represented by the movement of substances shown in the diagram?
The graphs show the depth and rate of breathing in an individual doing four different levels of activity. The same scale for volume is used in each...
Which graph shows the changes in concentration of urea and glucose in the blood during kidney dialysis?
The diagram shows a cross-section of the human skin. Which structures are involved in maintaining a constant body temperature?
The graph shows changes in a person's body temperature plotted against time. What could cause the changes in body temperature in periods 1 and 2?
The diagram shows a section through the human brain. Which part of the brain controls the rate of breathing?
Which condition causes an increased blood glucose concentration?
The diagram shows the bones of the human forelimb. Which row names the three bones?
Which short-term effect is caused by excessive consumption of alcohol?
Which row shows the characteristics of viruses?
The graph shows the mass of Penicillium grown in a fermenter and the mass of antibiotic produced. When is the Penicillium producing antibiotic most...
The diagram shows part of the carbon cycle. Which row identifies processes W, X, Y and Z?
An organism such as a mosquito can pass a disease-causing organism from one host to another. Which term describes the mosquito?
Which graph shows how the amount of DNA in a cell changes when the cell divides by mitosis?
The diagram shows the human male reproductive system. Which structure may contain sperm?
Some statements about the human immunodeficiency virus (HIV) are listed. 1 Its spread can be reduced by using condoms. 2 It can pass across the pla...
The diagram shows a developing fetus in the uterus. What is the liquid at X called?
Which row shows examples of continuous and discontinuous variation in humans?
The diagram shows a family tree for the inheritance of eye colour. The allele for brown eyes is dominant and the allele for blue eyes is recessive....