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.
Blood from the ileum is carried in the hepatic portal vein to the liver. Why is this an advantage to the body?
The table shows the compositions of four foods. Which food provides the most energy per gram? [Figure 9.1]
Which statements about root hairs are correct? 1 They increase the surface area for the plant to take up water. 2 They increase the surface area fo...
The diagram shows a section through a plant stem. Which process is responsible for moving substances in region Z? [Figure 12.1]
The diagram shows cross-sections of two blood vessels, P and Q. What types of blood vessel are they? [Figure 14.1]
The diagram shows a section of capillary. Which arrow represents tissue fluid formation? [Figure 15.1]
What is not a feature of alveoli?
Which structures contract to cause us to breathe out with force when sneezing?
The diagram shows the human gas exchange system. What are the labelled parts? [Figure 18.1]
The diagram shows a simplified dialysis machine. How do the urea concentrations in the blood and dialysis fluid change as they pass through the app...
The diagram shows a section through the human brain. Which part is the cerebellum? [Figure 21.1]
A person is reading a book in dim light. Which row shows the state of the eye muscles? [Figure 22.1]
Which statement about the ulna is correct?
Which of these structures would be the first to receive nicotine absorbed into the blood from tobacco smoke?
Some characteristics of microorganisms are listed. 1 can be killed by antibiotics 2 cell wall made of chitin 3 genetic material is DNA or RNA 4 hav...
The diagram shows the carbon cycle. During which stage in the cycle is oxygen excreted by living organisms? [Figure 30.1]
The diagram shows some ways in which human activities affect the environment. Which activity is most likely to lead to acid rain? [Figure 32.1]
Which statements about meiosis are correct? [Figure 33.1]
Which conditions are needed for the germination of most seeds? [Figure 34.1]
The diagram shows a fetus in the uterus. Which of the labelled structures are essential for feeding the fetus, and which for supporting it and prot...
The diagram shows the changes in thickness of the uterus lining during one menstrual cycle. When would the levels of progesterone and LH be highest...
Two brothers had different blood groups. One was blood group A and the other was group B. What can be concluded about their parents' blood group ge...
What is a potential danger of growing genetically engineered crops?
Fig. 1.1 shows four types of human teeth A, B, C and D. [Figure 1.1] Fig. 1.2 below shows the arrangement of teeth in the lower jaw of a human.
Fig. 2.1 shows a section through a human kidney and its associated structures. [Figure 2.1]
Fig. 3.1 shows the flow of energy within a biological system. [Figure 3.1]
Fig. 4.1 shows a human cell. [Figure 4.1]
Fig. 5.1 shows the fruits of two plants, A and B. Both fruits are animal-dispersed. [Figure 5.1] With reference to the features shown in Fig. 5.1, ...
Fig. 6.1a shows the right eye of a person before moving into an area of bright light. [Figure 6.1a] Fig. 6.1b
Fig. 7.1 shows a fermenter used for the production of an antibiotic. [Figure 7.1]
With reference to specific examples, explain how and why diet should be related to the age and activity of an individual.
Describe how the nervous system is involved in the maintenance of a constant body temperature.
Fig. 1.1 shows stages in the development of human twins. [Figure 1.1]
Fig. 2.1 shows changes in the body temperature of a person. [Figure 2.1]
An experiment was carried out to investigate the inheritance of flower colour. In cross 1, a plant with blue flowers (plant G) was pollinated by an...
Fig. 4.1 shows the relationships between a number of organisms living together in a South American rainforest. [Figure 4.1]
Muscles are arranged around joints in pairs. One muscle contracts to bend a limb at a joint, and the other contracts to straighten it. [Figure 5.1]
Explain why most living organisms depend on photosynthesis.
Describe the causes and symptoms of each of the following: rickets,
Explain how water is taken into a plant.
Describe and explain the features of a gas exchange surface.
Four types of cell found in the leaf of a green plant are listed below. 1 epidermal cells (not including guard cells) 2 guard cells 3 palisade meso...
Which statements about osmosis are correct? 1 Glucose molecules can move by osmosis. 2 Molecules pass through a partially permeable membrane. 3 Mol...
A seedling is placed, with its roots, in a solution containing potassium ions and left for 48 hours. The relative concentrations of the potassium i...
Enzyme action can be explained by the lock and key hypothesis. Where is the active site and does the substrate act as the lock or as the key?
Some organisms live at the bottom of the sea where it is very dark. To synthesise glucose, they use energy from chemicals in the very hot water tha...
Which graph shows the effect of temperature on the rate of oxygen released by an aquatic plant when placed in strong light?
The diagram represents a cross-section of part of a leaf. [Figure showing a cross-section of a leaf with 'X' pointing to an air space] How does the...
What is the main function of the colon?
What is least likely to increase the transpiration rate in a plant?