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 diagram shows the pathway of water molecules through part of a leaf, seen under a microscope, in transverse section. Where does water evaporate...
The diagram shows the right side of the human heart when the ventricle is relaxed. [Figure 13] Which row correctly describes the positions of valve...
The diagram shows a section through part of a vein. [Figure 15] What could be the first organs found in the directions 1 and 2?
Which chemicals are produced in anaerobic respiration by yeast cells?
Two people of equal body mass do the same amount of exercise. One person is in good health. The other person has emphysema. The rate of oxygen ente...
The table shows the effect of exercise on the rate and depth of breathing. [Figure 18] What is the increase in the volume of air exchanged per minu...
The diagram shows the human urinary system. Which structure is the urethra? [Figure 19]
The diagram shows some of the structures seen in a section through human skin. [Figure 20] What is the function of structure X?
The diagram shows a horizontal section of a human eye. Which part contains receptor cells sensitive to light? [Figure 21]
The diagram shows the external view of a brain. Which part of the brain is concerned with thinking and making decisions? [Figure 22]
In diabetes, glucose appears in the urine. How does insulin prevent this?
What are some effects of using heroin?
Antibiotics, such as penicillin, are produced in fermenters on a large scale. Which substance is not needed for production of penicillin in this way?
Some young plants were put into the soil and grew well for a few weeks. They then began to show signs of disease. Samples of the diseased leaves we...
The graph shows changes in the populations of plant and animal plankton in a lake. [Figure 28] Consider the following statement in relation to the ...
A food chain is shown. grain → insects → small birds → owls → lice What is the pyramid of numbers for this food chain? [Figure 29]
In the carbon cycle, which process returns carbon to a food chain?
Which action will not help to reduce the spread of the malarial vector in the human population?
Which change would lead to an increase in biodiversity in an area?
The diagram shows the chromosomes in a cell. [Figure 33] Which diagram shows the product of one division of the cell by mitosis? [Figure 33 options]
The diagram shows a section through a flower. [Figure 34] Which statement is correct?
The diagram shows a baby about to be born. Which labelled structures are the cervix and uterus? [Figure 35]
A person's basal body temperature is their temperature when they first wake up in the morning. In women, an increase in blood progesterone concentr...
The diagram shows a pair of chromosomes from the same cell. [Figure 37] A gene is found at the point labelled P. In a heterozygous individual, what...
The table shows the variation in foot length in a number of students. [Figure 38] Which row identifies this type of variation and states its cause?
The colour of the fruit of tomato plants is determined by alleles of the same gene. A tomato plant with red fruit was crossed with a tomato plant w...
Diabetes may be treated using insulin from genetic engineering. Where is this insulin produced?
The diagram shows a food web in a pond. kingfisher, small fish, frog, tadpole, water beetle, snail, water plant.
The diagram shows a male human gamete. nucleus. The diagram below shows the male reproductive system and associated organs.
The diagram shows the fruit of a plant.
The diagram shows a human heart and associated blood vessels. F A E D B C
No introductory text, directly to part (a).
The diagram shows a magnified transverse section through a leaf. Name each of J, K, L and M and explain the importance of each in the process of tr...
The diagrams show the bud of an insect-pollinated flower and a magnified transverse section through the same flower bud. The transverse section was...
The diagram shows the human heart. The blood vessel labelled F may become narrowed as shown. [Figure: Human heart with blood vessel F and a magnifi...
The table shows how the thickness of the lens of the eye changes when focussing on an object at different distances from the front of the eye. dis...
The graph shows the effect on crop yield (amount harvested) of using fertilisers that contain nitrogen. [Figure: Graph showing crop yield in kg/hec...
The diagram shows a section through the human body divided into regions P, Q, R and S. [Figure: Human body diagram showing regions P, Q, R, S and i...
The diagram shows a magnified transverse section through a leaf. [Figure: Magnified transverse section through a leaf showing T, U, V, W]
Describe the cause of each of the following: Down's syndrome, sickle cell anaemia.
Explain why most foods eaten by a human must be digested.
The diagram shows a cell from a plant leaf and a cell from an animal's skin. Which part will stain blue-black with iodine solution? [Figure 1.1]
The diagram shows a plant cell after being placed in a solution for an hour. [Figure 2.1] What provides the explanation for the appearance of this ...
The diagram shows some cells in the root of a plant that is absorbing water from the soil. [Figure 3.1] How does the water potential of the cell ma...
Which statement about enzymes is not correct?
The graphs show how two different conditions affect the rate of photosynthesis. [Figure 6.1] Which conditions are being altered in graphs 1 and 2?
A plant has leaves with both green and white areas. One of its leaves is partly covered with aluminium foil which blocks light. [Figure 7.1] The pl...
The diagram shows a section of the wall of the small intestine. [Figure 8.1] Into which structure are most of the lipid components of the diet abso...
The diagram shows the arrangement of human teeth in the lower jaw. [Figure 9.1] Which tooth is an incisor?
Which statement describes the function of the stomach?