Cambridge & Pearson Edexcel Past Paper Questions

The table lists the effects of four different drugs. Which drug is heroin?

Which statement about penicillin is correct?

The diagrams show three organisms, not drawn to the same scale. Each diagram has its own scale line. Using the same units (µm) in each diagram, wha...

What is the main source of energy for green plants?

The diagram shows a pyramid of numbers in a woodland ecosystem. At which trophic level are the individual organisms largest in size?

The diagram shows some of the stages in the nitrogen cycle. What is process X?

In conservation the aim can be to maintain a large number of individuals within a species. What will result from this?

The diagram represents a section through the human skin. In which part is mitosis occurring most rapidly?

The diagram shows a section of a seed. What are the numbered parts?

What is the role of progesterone in the menstrual cycle?

Which characteristic shows continuous variation?

In the ABO blood grouping system, which genotype is homozygous dominant?

If a homozygous recessive is crossed with a heterozygous individual, what would be the ratio of dominant to recessive individuals in the offspring?

The diagram shows three cellular structures. [Figure 1.1] Which statements about these cells are correct?

Active transport, diffusion and osmosis are described below. 1 the movement of ions or molecules across the cell membrane against a concentration g...

Which graph best represents the effect of pH on the action of gastric protease?

The diagram shows a section through part of a dicotyledonous leaf, as seen under the microscope. [Figure 5.1] Where is the xylem?

When a plant is photosynthesising, which gases enter and leave the stomata?

Which molecule is absorbed in the ileum?

Which table describes the elements present in carbohydrate, protein and fat?

The graph shows how the pH changes along the alimentary canal. [Figure 10.1] What is the region labelled X?

The diagram shows a section through a root. [Figure 11.1] Which tissue transports amino acids?

The diagram shows the movement of water molecules in a leaf from the xylem to the atmosphere. [Figure 12.1] At which stage does evaporation occur?

Which organs receive blood from both an artery and a vein?

The diagram shows a section through the human heart. [Figure 14.1] Why is the wall of the right ventricle thicker than the wall of the right atrium?

The table shows the characteristics of the blood in one blood vessel in the body. oxygen concentration high, carbon dioxide concentration low, pres...

When breathing out forcefully, which muscles are contracting?

Scientists believe that absorption of mineral ions in plants requires energy from respiration. Which observation best supports this idea?

At the end of a 100 m sprint, how will blood passing through the leg muscles be different from the blood at the start of the race?

The diagram shows what happens to molecules of glucose, protein and urea as blood passes through a kidney dialysis machine. [Figure 19.1] What are ...

Which process is responsible for maintaining a person's body temperature when they are too cold?

The diagram shows a section through the eye. [Figure 21.1] Which pair of structures focus light rays onto the retina?

The diagram represents a section through the brain and associated structures. [Figure 22.1] Which labelled region coordinates breathing movements a...

The diagram shows part of the skeleton of an elephant. [Figure 24.1] What is the bone labelled Z?

Which risk is greatly increased by the nicotine in cigarette smoke?

Which type of organism produces penicillin, and which type of infection can be treated using penicillin?

The diagram shows three stages in the production of a blue cheese. [Figure 27.1] The three stages use micro-organisms and enzymes, as shown by P, Q...

The diagram shows a pyramid of numbers in a woodland ecosystem. [Figure 29.1] At which trophic level are the individual organisms largest in size?

The diagram shows part of the nitrogen cycle. [Figure 30.1] Which arrow shows decomposition?

Which consequence of burning fossil fuel leads to acid rain?

The diagram represents a section through the human skin. [Figure 33.1] In which part is mitosis occurring most rapidly?

The diagram shows a section of a seed. [Figure 34.1] What are the numbered parts?

What are the functions of LH and FSH in the menstrual cycle?

The diagram shows a pair of chromosomes from the same cell. [Figure 40.1] A gene is found at the point labelled P. In a heterozygous individual, wh...

Fig. 1.1 shows a section through a plant organ with a very small pipette (micropipette) inserted into tissue A. [Figure 1.1]

Fig. 2.1 shows the digestion, absorption and assimilation of a chemical (B). It also shows the formation of its waste product, chemical F. [Figure ...

At puberty, hormones are produced that are responsible for the development of secondary sexual characteristics. Fig. 3.1 shows the concentrations i...

Fig. 4.1 shows the effect of exercise on the concentration of oxygen in the blood and the concentration of lactic acid in the muscles of a healthy ...

Fig. 5.1 shows a decaying tooth. [Figure 5.1]

Describe the two forms of variation found within a natural population.