Cambridge & Pearson Edexcel Past Paper Questions

Stages in the production of insulin on a commercial scale are listed. 1 bacteria produce human insulin 2 bacteria reproduce 3 human insulin gene ex...

The diagram shows human skin.

A man decides to do some fitness training to improve his ability to provide oxygen to his muscles.

A gardener grows a species of dahlia, a flowering plant. Each year the gardener chooses his best plants and takes cuttings to make new plants. shoo...

The human liver contains a high concentration of enzymes called transaminases. These enzymes are important in the metabolism of amino acids. Amino ...

A plant species lives in ponds. The diagrams show the whole plant and a section through one of its leaves. plant leaves float on surface of water p...

There are many different types of virus that can infect animal cells.

The diagram shows a section through a molar tooth of a human. enamel dentine pulp made of living tissue containing sensory nerve endings and blood ...

The functions of the body are coordinated by nerve impulses and hormones.

The world produces over 100 million tonnes of nitrogen-containing fertiliser annually. Farmers spread this artificial fertiliser over their soil.

The diagram shows the human brain and the table lists the functions of some parts of the human brain. [Figure 1.0 showing a diagram of the human br...

The diagram shows apparatus used to study breathing. [Figure 2.0 showing a diagram of breathing apparatus with a revolving drum, pen, upper box con...

A student carried out two investigations into the action of yeast. (a) In the first investigation, the student dissolved 20.0g of glucose in 100cm...

There are many different types of amino acid. One of these is phenylalanine. The diagram shows the structure of a molecule of phenylalanine. [Figur...

(a) Biological processes in plants are affected by environmental factors. The graphs each show the effect of changing one environmental factor on a...

The diagram shows food inside part of the small intestine. [Figure 6.0 showing a cross-section of the small intestine with food, and labels U and T...

The diagram shows a cross-section through a seed before germination and the same seed after it has become a seedling. [Figure 7.0 showing a seed be...

(a) Compare the pulmonary artery and the vena cava in terms of their structure and function. [6] (b) Explain the role of platelets and the importa...

(a) Compare the ureter and the urethra in terms of their functions in adult humans. [4] (b) Explain how the process of dialysis maintains the corr...

Which description applies to a red blood cell?

A green-leafed plant produces spores. To which group does the plant belong?

Which statement is always correct for both diffusion and osmosis?

The graph shows the effect of oxygen on the uptake of ions by two sets of barley plants. Except for oxygen availability, both sets of barley plants...

A student tested a sample of food. The results are shown. colour after adding Benedict's solution and heating: red, colour after adding biuret reag...

The graph shows the effect of substrate concentration on the rate of an enzyme-controlled reaction. The results have been obtained using a fixed co...

The graph shows how the rate of photosynthesis in a plant varies with light intensity. Which statements are correct? 1 Light intensity is the only ...

The diagram shows part of a transverse section through a leaf. What are the main functions of the three labelled regions?

Which description of the function of root hairs is correct?

Which conditions result in the highest rate of transpiration from a plant?

Which disease can be the result of a dietary deficiency of both a mineral ion and a vitamin?

A student states: 'The contraction of circular muscles pushes the contents forward.' Which process is being described?

An investigation is carried out on digestion and absorption in the alimentary canal. The diagram shows the apparatus used. The Visking tubing is pe...

Some students were each given the apparatus shown. They placed the mouthpieces in their mouths and then gently breathed in and out through the appa...

How many molecules of carbon dioxide will be produced from the breakdown of two molecules of glucose in aerobic respiration?

Which equation shows the type of respiration that can cause an 'oxygen debt' in muscles during vigorous exercise?

Blood pressure was measured in the pulmonary artery, pulmonary capillaries and pulmonary vein. Which blood pressure results could be correct?

Which component of blood engulfs pathogens?

What would help reduce transmission of malaria?

The table shows the death rates from lung cancer in a country amongst smokers and non-smokers. average number of cigarettes smoked per day: 0, deat...

What is one way that development of antibiotic-resistant bacteria can be minimised?

What are the effects of the human immunodeficiency virus (HIV) on the immune system?

The blood in the renal vein has a different composition to the blood in the renal artery. How is the blood in the renal vein different?

The diagram shows a reflex arc. A person was involved in an accident and their arm was injured. The sensory neurones at X were cut. Which statement...

The diameter of a person's pupil is measured as the light intensity is varied. During which time period does the light intensity increase fastest?

On a warm sunny day, a swimmer climbs out of a pool and sits on the edge to dry. After a few minutes, the swimmer's skin begins to feel cold. What ...

A genetic disorder causes too much insulin to be secreted. What is the effect of the secretion of too much insulin?

Auxin is a chemical produced by plants. What is the role of auxin?

The diagram shows cell X which contains 24 chromosomes. It divides by mitosis to produce cells Y and Z. How many chromosomes does cell Z contain?

What is a feature of asexual reproduction in a plant?

The diagram shows the parts of a flower. Which labelled part will develop into a seed following fertilisation?