Cambridge & Pearson Edexcel Past Paper Questions

In an experiment to investigate transpiration, the leaves of four identical shoots are treated as follows. 1 upper surfaces covered with waterproof...

The diagram represents the heart and some major blood vessels. [Diagram] What are possible blood pressures (in kPa) for the vessels shown on the di...

The diagram shows the liver and its blood supply. [Diagram] What is the name of blood vessel X, and which substance increases in concentration betw...

Which word equation shows anaerobic respiration in yeast?

The table shows the effect of exercise on the rate and depth of breathing. What is the increase in the volume of air exchanged per minute after exe...

The diagram shows a section of an alveolus and a capillary in a lung. [Diagram] What are the relative concentrations of carbon dioxide at X, Y and Z?

The diagram represents a kidney machine. [Diagram] Which two substances are both present in the dialysis fluid entering the machine?

The diagram shows some of the structures in human skin. [Diagram] Which labels describe the structures Y and Z in hot conditions?

What are characteristics of all neurones?

An antelope is grazing under a tree. It hears men shouting in the distance. Which changes take place in the antelope's eyes as it raises its head t...

A patient complains to the doctor of unexplained weight loss, severe thirst and frequent need of urination. A test shows high levels of glucose in ...

The diagram shows part of the elbow joint. [Diagram] Why are the muscles labelled X and Y described as antagonistic?

The diagrams show the structure of the alveoli in the lungs of a normal person and in a smoker with emphysema. [Diagram] What is the effect of emph...

A student examined four different microorganisms. She noted whether the microorganisms had a nucleus, chloroplasts and cytoplasm. She constructed t...

The diagram shows some of the stages in cheese production. [Diagram] At which stage in the production of cheese are bacteria added?

Some types of bacteria make carbohydrates from carbon dioxide and water using the energy from sunlight. Which of the following describes these bact...

The diagram shows a food web. [Diagram] Which statement about this food web is correct?

How do nitrogen-fixing bacteria improve soil fertility?

Which row shows a cause and an effect of eutrophication?

A male gamete leaves the pollen tube immediately after the pollen tube has entered which structure?

What is always essential for seeds to begin germinating?

The diagram shows some cells in the life cycle of an animal. [Diagram] Which processes are occurring at X, Y and Z?

Over time, a species of bird develops a more pointed beak. The more pointed shape of the beak helps the birds to catch small insects that may be hi...

Bacteria can be genetically engineered to produce human insulin. Before this method was developed, the only insulin available was that from cattle ...

Fig. 1.1 shows a vertical section through the skin in two different environmental conditions, A and B. skin in environmental condition A skin in en...

Table 2.1 shows the volume of blood supplied to parts of the body at rest and during strenuous exercise. Table 2.1 volume of blood supplied in cm³/...

Fig. 3.1 shows a fetus developing in the uterus of a mother. The fluid labelled C contains cells from the fetus. A long, hollow needle may be used ...

Define the term drug.

Fig. 5.1 shows some of the interactions that take place in an aquatic ecosystem. animal waste uneaten food X ammonium ions Y nitrite ions food Y ni...

Fig. 6.1 shows a structure found in part of the alimentary canal. [Figure 6.1]

Describe the significance of each of the following features of a dicotyledonous leaf in terms of the process named: the distribution of chloroplast...

Section C Answer either question 8 or question 9. Write your answers in the spaces provided.

Fig. 1.1 shows the effect of temperature on the rate at which yeast cells in a nutrient solution produce bubbles of a gas. [Figure 1.1]

Fig. 2.1 shows a plant called the ghost plant and a magnified diagram of its flower. It is called a ghost plant because it is often completely whit...

Fig. 3.1 shows the blood supply to cells in the liver. [Figure 3.1]

The dominant allele for the ability to smell the scent of a particular flower is represented by A. The recessive allele, which does not allow a per...

Table 5.1 shows the mean daily water intake and loss by a person. Table 5.1 water intake / dm³ water loss / dm³ drinks 1....

For a named fruit or seed, describe how it is adapted for animal dispersal.

active transport

Outline the role of microorganisms in the production of yoghurt.

Syphilis and HIV are both spread by sexual contact.

Which two structures are found in all plant epidermal cells?

Which processes can only occur through a membrane?

The small intestine of a person contains a lower concentration of glucose than is present in the blood. The cells of the villi absorb glucose. By w...

X and Y are the reactants in a chemical reaction for which E is the enzyme. The product is Z. The first three stages in the reaction are shown. X +...

Which row shows what happens in photosynthesis?

The diagram shows a cross-section of a dicotyledonous leaf. [Figure 6.1] Which labelled parts of the leaf carry out photosynthesis?

The graph shows how the rate of photosynthesis of a plant varies with light intensity at two different carbon dioxide concentrations. The temperatu...

The diagram shows part of the alimentary canal and associated structures. [Figure 8.1] What are organs P and Q?

Which statement about chemical digestion in the human alimentary canal is correct?