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.
Explain why plants that are grown commercially are often reproduced by asexual methods.
Artificial Insemination is a method of breeding farm animals in which the semen (liquid containing sperm) from a selected male animal is sent to a ...
The flow chart shows stages in the life cycle of a flowering plant. [Figure 1.1: Flowchart showing stages 1-6 of a flowering plant life cycle. Stag...
In 1931 a scientist was pouring the powdered form of a chemical called PTC into a bottle. A small amount of the powder accidentally blew into the a...
When an apple fruit is cut open, the cut surface of apple tissue quickly becomes brown and is less likely to be eaten. This change in colour is sho...
Hydroponics is a technique used to grow plants without soil. The diagram shows plants being grown using hydroponics. [Figure 4.1: Diagram showing a...
The diagram shows the total volume of water entering and leaving organs of the human alimentary canal during one day. [Figure 5.1: Diagram showing ...
The diagram shows a vertical section through human skin in a hot environment. [Figure 6.1: Diagram of human skin with labels P pointing to a sweat ...
The kidneys are organs of excretion.
Describe the principal roles, in terms of coordinating and regulating bodily functions, of:
Answer either Question 8 or Question 9.
The diagram represents the cell structures of a human liver cell, a leaf palisade cell and a human red blood cell. [Figure 1] Which cell structure ...
Which process occurs by diffusion alone?
An experiment to investigate osmosis is set up as shown. [Figure 3] What happens to the height of the liquid in tube X and the concentration of the...
The diagrams show an enzyme molecule and some substrate molecules. [Figure 4] Which diagram shows the substrate molecule for this enzyme?
The graphs show factors affecting the rate of photosynthesis. [Figure 5] At which points on the graphs could the rate of photosynthesis be limited ...
The diagram shows the arrangement of cells inside a green leaf. Different types of cells are indicated by the brackets. No cell contents are shown....
Why do newly germinated seeds fail to grow into healthy plants if they lack magnesium ions?
Milk contains water, carbohydrates, proteins, fats, and some minerals and vitamins. The graph shows the results of an experiment. One group of youn...
The diagram shows a section through a villus. [Figure 10] Which products of digestion are mainly absorbed by vessel X?
The diagram shows a section through a plant stem. [Figure 11] Which process is responsible for moving substances in region Z?
Which statement describes why a leaf wilts?
The diagram shows a simplified human circulatory system. [Figure 14] Which structure represents the heart?
The diagram shows the pressures in the left side of the heart during one heartbeat. [Figure 15] Which valves are open and which are closed at the t...
Energy is needed for many processes within the body. Which process does not require the use of energy?
What are features of the alveoli?
Which graph shows a person's breathing when at rest and then exercising? [Figure 18]
During kidney dialysis, which blood components pass from the blood into the dialysis fluid?
Which biological process is represented in the diagram? [Figure 20]
The diagram shows a front view of the parts of the eye involved in producing a focused image of near and distant objects. [Figure 21] What are stru...
The diagram shows some of the nerve pathways associated with a reflex action. [Figure 22] If the pathway at X is damaged, how does this affect the ...
Which statements about hormones are correct? 1 Insulin is made in the pancreas and increases the concentration of glucose in the blood. 2 Adrenalin...
The diagram shows the bones of the arm. [Figure 24] Which label represents the radius?
An investigation into reaction times involved three similar large groups of adults. Each adult had to press a button as soon as they saw a light fl...
What is a feature of all bacteria?
Yeast is used in alcohol production. What is the other product of this process?
In a pyramid of biomass, the mass of producers is 800 g/m². What are the likely masses of the carnivores and the herbivores?
Which diagram represents the flow of carbon atoms in an ecosystem? [Figure 29]
The diagram shows the nitrogen cycle. [Figure 30] Which stages involve bacteria?
Which gas contributes to acid rain?
Which statement is correct about the offspring produced by asexual reproduction?
The graph shows changes in the dry mass of a seed as it germinates and grows. [Figure 34] What causes the change shown between points S and T?
The graph shows the concentration in the blood of three of the four hormones FSH, LH, oestrogen and progesterone during a menstrual cycle. [Figure ...
Infection with HIV can result in death from AIDS. The graph shows AIDS-related deaths from 1990 to 2015 in a country. [Figure 36] What is the best ...
Some statements about chromosomes are listed. 1 A chromosome includes a long molecule of DNA. 2 Genes are found in chromosomes. 3 In cell division,...
One gene has two codominant alleles, Aᴱ and Aᴳ, and one recessive allele, Aᴴ. How many different genotypes and phenotypes are possible?
What is an advantage of genetic engineering?
Four features found in cells are listed. 1 cell membrane 2 chloroplasts 3 nucleus 4 starch grains Which two features are found in animal cells?
Which statement about diffusion is correct?
An experiment to investigate osmosis is set up as shown. [Figure 3.1] What happens to the height of the liquid in tube X and the concentration of t...