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 the dry mass of a seed as it germinates. [Figure showing a graph of dry mass vs. time/days, with points S and T marked ...
The diagram shows part of a flower after it has been pollinated. [Figure showing a diagram of part of a flower with structures labelled 1, 2, 3, 4...
Where does the placenta allow the exchange of materials to take place between mother and fetus?
The diagram shows some stages in cell division in a fruit fly. [Figure showing cell X undergoing mitosis to produce cell Y, and cell Y undergoing ...
The genotype for the height of an organism is written as Tt. What conclusion may be drawn?
In a large family, half the children were blood group A and half were blood group B. If the father was blood group O, what was the mother's blood ...
How many chromosomes are there in a zygote which develops into a baby with Down's syndrome?
Which statement describes an example of artificial selection?
Which of the following have both cytoplasm and cell walls?
Plant cells are placed in a solution with a lower water potential than that of the cells. Which row is correct?
Which diagram illustrates the process of active transport?
A bacterium lives in hot springs at temperatures of 75°C to 85 °C. Which graph represents the activity of enzymes found in these bacteria?
The diagram shows the structure of a leaf of a dicotyledonous plant. [Figure 5.1] What are the functions of the parts labelled on the diagram?
The diagram refers to some substances found in plant cells. Which area of the diagram represents the end products of photosynthesis? [Figure 6.1]
The diagrams show an experiment to find the rate of photosynthesis in an aquatic plant in different conditions. Which plant produces the most bubbl...
Which symptom of malnutrition can be treated by an increased amount of protein in the diet?
The table shows the rates of absorption of two different sugars, arabinose and glucose, in living and dead intestines. The concentrations of the su...
The table describes some characteristics of four people. Which person requires the highest energy intake in their diet?
The diagram shows a section through the stem of a dicotyledonous plant. Which tissue transports sugars through the stem? [Figure 11.1]
Which effects will an increase in temperature and an increase in humidity have on the transpiration rate of a plant?
Which sequence shows the shortest route taken by blood travelling from a leg to an arm in the human body?
The diagram shows a section through part of a vein. [Figure 14.1] What could be the first organs found in the directions 1 and 2?
The graph shows the pressure changes in the left atrium and the left ventricle while the heart is beating. [Figure 15.1] When does the atrio-ventri...
Anaerobic respiration in yeast can be summarised as follows. glucose → ethanol + carbon dioxide How many molecules of carbon dioxide will be produc...
The diagram shows an alveolus and an associated blood capillary. At which point will the greatest rate of diffusion of carbon dioxide occur? [Figur...
What happens to the volume of the thorax and the air pressure in the lungs during breathing out?
Which process occurs in a kidney dialysis machine?
What happens when the body temperature rises above normal?
A man stands 10 metres away from a sign and can see it clearly. He walks towards the sign and stops 0.5 metres from it. Which changes occur in his ...
The diagram shows a section through the brain. [Figure 22.1] What are some functions of the parts labelled 1, 2 and 3?
How does adrenaline affect glucose uptake by muscle cells and carbohydrate conversion by liver cells?
The diagrams show the bones of the forelimb in a bat and in a human. Which structure in the forelimb of the bat can be identified as the humerus? [...
The bar chart shows the percentage of women who had babies of low weight, amongst smokers and non-smokers. [Figure 25.1] What is shown by the bar c...
Which substances are produced using bacteria?
Using the key, which organism is a virus? 1 has a cell wall go to 2 does not have a cell wall go to 3 2 cell wall is made of chitin organism A cell...
Which statement correctly describes relationships in ecosystems?
The diagram shows a food chain. grass → rabbit → fox → flea Which pyramid of numbers matches this food chain? [Figure 29.1]
In which natural cycles are protein molecules involved?
Why is the organism that causes malaria called both a parasite and a pathogen?
The list shows some changes that may occur in a lake that is polluted with nitrogen-containing fertiliser. 1 Concentration of oxygen decreases. 2 D...
What are two female parts of a flower?
Cell X contains 24 chromosomes. It divides by mitosis to produce cells Y and Z. [Figure 34.1] How many chromosomes does cell Z contain?
The graph shows the concentration of a hormone in the blood during one menstrual cycle. [Figure 35.1] Which hormone concentration was measured?
Which substances are present in breast milk but not in bottled milk made from milk powder?
Which outcomes might farmers want to achieve by using artificial selection?
The diagram shows the blood group phenotypes of some members of a family. [Figure 38.1] Which member of the F1 generation must be heterozygous, wit...
Which statement is always true of dominant alleles?
What are found in plant cells but not in animal cells? 1 cell membrane 2 nucleus 3 cell wall 4 chloroplast
Which statement is always correct when oxygen is diffusing out of a plant cell?
The diagram represents the passage of water molecules and glucose molecules across a partially permeable cell surface membrane. Which arrow indicat...