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.
What happens to the muscles of the diaphragm, the external intercostal muscles and the position of the diaphragm when breathing in? [Table]
The diagram shows an experiment to study respiration in growing barley seeds. [Diagram] The results of this experiment show that respiration
Which bones meet at the elbow joint and what kind of movement do they allow? [Table]
The diagram shows a section through skin. [Diagram] What happens if the body temperature starts to fall below normal? [Table]
The diagram shows the structures associated with a human kidney. [Diagram] What are the relative concentrations of urea in X, Y and Z?
The diagram shows a section through the human brain. [Diagram] What are the functions of the labelled regions? [Table]
The graph shows how the diameter of the pupil of a person's eye changed during the course of two minutes. [Graph] What happens to the light intensi...
When are antibiotics likely to be most effective?
The diagram shows part of a river into which sewage is being pumped. [Diagram] Some of the effects of adding sewage to the river are plotted in the...
The diagram shows some nerve pathways involved in temperature control of the human body. [Diagram] Which part of the nervous system does X represent?
Which organisms are used, and what is their role, in the manufacture of cheese? [Table]
Nitrates in the soil can be absorbed by plants. Nitrates can also be removed from the soil by the action of
A single plant provides food for many herbivores. The herbivores supply food for a few carnivores. [Diagrams of pyramids] Which pyramid of numbers ...
The diagram shows part of the nitrogen cycle. [Diagram] Which stages depend on bacteria?
What makes the female mosquito an effective vector for malaria?
Lichens are organisms which are very sensitive to air pollution. The graph shows how the distance from a coal-fired power station affects the numbe...
What passes down a pollen tube after pollination?
The diagrams show two kinds of fruit. [Diagrams] How are the seeds of these fruits dispersed? [Table]
The diagram shows a section through the female reproductive system. [Diagram] During pregnancy, where does mitosis occur in the cells of the embryo...
What is a reason for breast milk being better for a baby than bottled milk?
Which statement is evidence that genes may be copied and passed on to the next generation?
The body cells of a mammal contain two copies of 24 000 genes, making 48 000 genes in total. Of these 48 000 genes in the body cells of a mammal, h...
The inheritance of the ABO blood groups in humans is controlled by three alleles (IA, IB and I°), only two of which can be present in one individua...
A human cheek cell and a spongy mesophyll cell from a leaf are examined under a microscope. Which structures are seen in both cells?
The mass of a cube of fresh potato is found. It is then placed in a test-tube containing a dilute solution of sucrose. After an hour, its mass has ...
The diagram shows an experiment on amylase. Each beaker contains water at the temperature shown. After five minutes, each test-tube of amylase is p...
The photomicrograph shows a transverse section of a leaf. Where does carbon dioxide enter the leaf? [Figure 5.1]
Two test-tubes, P and Q, were set up each containing a solution of red hydrogen carbonate indicator. Hydrogen carbonate indicator turns yellow when...
Which graph shows the effect of temperature on the rate of photosynthesis? [Figure 7.1]
Which chemical elements are found in carbohydrates, fats and proteins?
The diagram shows a bolus of food moving along the oesophagus. Which row describes the condition of the muscles at P, Q, R and S? [Figure 9.1]
The photomicrograph shows human blood. Which component cannot function effectively if a person's diet lacks iron? [Figure 10.1]
The diagram shows part of a transverse section of a leaf. Which cells conduct water into the leaf and which cells conduct sugars out of the leaf? [...
The diagram shows two plant cells, X and Y, drawn to different scales. Samples of the contents of X and Y were tested for nutrients. What results a...
Which blood vessel carries absorbed food material from the small intestine to the liver?
The diagram shows a section through part of a blood vessel. What could be the first organs found in the directions 1 and 2? [Figure 14.1]
The diagram represents the heart and some major blood vessels. Which are possible blood pressures (in kPa) for the vessels shown on the diagram? [F...
What are the products of anaerobic respiration in humans and in yeast?
The diagram shows the ribs and some of the muscles used in breathing. Which muscles relax in moving from position X to position Y? [Figure 17.1]
The table shows the composition of inspired and expired air. What are the likely percentages at X and Y?
The diagram shows the bones of the forelimb. Which labels show where the muscle that straightens the hinge joint is attached? [Figure 19.1]
The diagram represents a kidney dialysis machine. What are the parts labelled X, Y and Z? [Figure 20.1]
What helps heat retention in the human body?
The diagram shows a section through the eye. Which pair of structures focus light rays onto the retina? [Figure 22.1]
Which part of the central nervous system controls the body's water balance?
What is a major effect of nicotine in tobacco smoke?
Foods can be made by treating milk in different ways. 1 Bacteria are added. 2 The milk is acidified. 3 The milk proteins are coagulated. Which proc...
Two containers, X and Y, were filled with equal amounts of dough mixture for making bread. The mixture in Y had yeast in it. The containers were th...
Why is a producer so called?
The diagram shows organisms in a habitat. Which shows the feeding relationships of these organisms? [Figure 29.1]