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.
Section C Answer either question 8 or question 9. Write your answers in the spaces provided. (a) Describe how a plant takes in carbon dioxide from ...
The nitrogen cycle makes nitrogen available for the production of proteins in plants. These plants may then be eaten by humans and the proteins dig...
Which structures are present in plant cells but not in animal cells?
A piece of plant tissue is transferred from a beaker of water into a concentrated sugar solution. Which row describes what happens?
Which statements about active transport are correct? 1 Ions move from a region of high concentration to a region of low concentration. 2 Ions move ...
What is a correct description of enzymes?
An investigation was carried out into the effects of light intensity and carbon dioxide concentration on the rate of photosynthesis. Which graph sh...
What describes the upper cuticle of a leaf?
Plants growing in soil lacking magnesium ions have poor growth. What causes their poor growth?
Which statement about diets is correct?
The diagram shows part of the human alimentary canal and associated organs. Which row describes the functions of parts shown in the diagram? [Figur...
What is not an example of assimilation?
Which feature of a root hair cell helps it take up ions from water in the soil?
Which row describes the functions of the blood components?
The diagram shows a section through the human heart. What will be the state of the valves when the walls of chambers X and Y are contracting? [Figu...
The diagram represents the blood supply to the liver and to the kidneys. Which vessels contain blood with the highest and lowest concentrations of ...
What is not a feature of aerobic respiration?
In an investigation, scientists treated plant roots with a chemical that stops aerobic respiration. They observed that after the treatment the plan...
Why does oxygen enter the blood in the lungs?
The diagram shows structures in a human which form and store urine. Liquids pass through tubes X, Y and Z in the directions shown by the arrows. Wh...
The diagram shows the homeostatic control of body temperature. What are corrective mechanisms P and Q and coordinator R? [Figure 9.1]
The diagram shows a section through the brain. Which part of the brain secretes hormones? [Figure 9.2]
Which changes occur in the eye when viewing a distant object? 1 The ciliary muscles contract. 2 The ciliary muscles relax. 3 The suspensory ligamen...
The diagram shows three positions, X, Y and Z, where nerve impulses are blocked by a drug. Which person listed below moves their leg in response to...
Which pair of bones form a hinge joint in the forelimb?
What are the effects of drinking a large quantity of alcohol on the human body?
Bacteria are involved in the manufacture of which product?
These processes occur in living organisms in a food chain. 1 excretion 2 photosynthesis 3 respiration Which processes would result in a loss of ene...
Which statements are correct? 1 Energy cannot be recycled in food webs. 2 Producers make their own organic nutrients. 3 The Sun is the principal so...
The diagram shows the movement of carbon in the carbon cycle, in gigatonnes per year. How many gigatonnes of carbon are moved by respiration each y...
What are the roles of the female mosquito and the malarial pathogen in the spread of malaria?
Which human activity will make the greatest contribution to global warming?
The diagram shows two onion plants. Using the information in the diagram, which statement about these onion plants is correct? [Figure 13.1]
Six bean seeds were soaked in cold water. Three of them were boiled and cooled. The boiled and the non-boiled seeds were chopped up and then placed...
The diagram shows how the blood of a human fetus flows close to the mother's blood in the placenta. Which substances are present at X in higher con...
Why will antibiotics not cure a person with HIV infection?
Chromosomes, DNA molecules and genes are pieces of inherited material with different sizes. Which statement describes the relationship between thes...
Earlobes can either be attached to the cheek or be ‘free’ (unattached). This characteristic is controlled by a single gene. The allele for attached...
Which feature of a cereal crop cannot be improved by selective breeding alone?
Which row is correct? cell tissue organ organ system
The following statements refer to the movement of substances into and out of cells. 1 Energy from respiration is required. 2 Energy from respiratio...
Which word describes an enzyme that has its active site changed by high temperature?
Hydrogencarbonate indicator changes colour according to the concentration of carbon dioxide present. The table shows how hydrogencarbonate indicato...
A lack of certain mineral ions affects the growth of young plants. Which effects are caused by a lack of magnesium ions and a lack of nitrate ions?...
The graph shows some of the nutrients found in peanuts. [Figure 8.1] A student tested peanuts with four food tests. Which row shows the results?
Which row shows factors that may contribute to famine? climate change causing drought destruction of tropical forest flooding increased human popul...
The diagram shows part of the human alimentary canal and associated organs. [Figure 10.1] Which row describes the functions of parts shown in the d...
How does water enter root hair cells?
Which row describes the functions of the blood components? plasma platelets white blood cells
The diagram shows how the volume of blood in the left ventricle of a human heart changes during one heart beat. When is the left ventricle contract...