Cambridge & Pearson Edexcel Past Paper Questions

The diagram represents an enzyme molecule. [Figure 4.1] What could be substrates for this enzyme?

How do carbon dioxide and water enter a leaf?

A lack of magnesium in plants leads to yellowing of the leaves. This is because magnesium is needed for

Which function is not carried out by the liver?

Which row shows substances mainly absorbed into capillaries and substances mainly absorbed into lacteals, in the villi of the small intestine?

Which of these food substances increases the risk of obesity? 1 fruit and vegetables 2 processed food 3 salt 4 saturated fat

The photomicrograph shows part of a section through a root. [Figure 12.1] The contents of cell X and the contents of cell Y are each tested with Be...

Which states the sequence of contractions in one heart beat?

The diagram shows the transfer of materials between capillaries and tissue fluid. [Figure 14.1] What could the numbered substances be?

Two people carried out a short period of exercise on a treadmill. Each of the two people ran on the treadmill for the same amount of time and at th...

What are the products of aerobic respiration in animals and plants?

What is the approximate composition of inspired air?

The diagram shows apparatus used to investigate respiration. [Figure 18.1] Which change will be seen and what is the explanation?

The diagram shows the bones and muscles of the elbow joint. [Figure 19.1] What describes the type of muscle at X, and the action of the muscle when...

What is a function of a part of the urinary system?

Which part of the skin has a major role in insulating the human body?

The diagram shows a section of the human brain. [Figure 22.1] What are the numbered structures?

The diagram shows the curvature of the lens in a person's eye. [Figure 23.1] The shape of the lens changes as the person watches two motorbikes go ...

Nerve impulses in neurones can travel 1 away from the central nervous system 2 towards the central nervous system 3 within the central nervous syst...

What are the effects on the body of drinking a large amount of alcohol?

The diagram shows a food chain. mahogany tree → caterpillar → songbird → hawk What is not recycled from the hawk to the mahogany tree?

The diagram shows a pyramid of numbers. [Figure 29.1] Which food chain is represented by this pyramid of numbers?

Which processes occur in the carbon cycle?

How many times must an uninfected mosquito feed on human blood to transmit the malarial parasite in the human population?

Which of the following, when disposed of, affects a river ecosystem for the shortest time?

The diagram shows the development of a pollen tube and its entry into the ovule. [Figure 33.1] Which part develops into the testa after fertilisation?

Small pieces of root tissue are taken from an oil palm tree and placed in a nutrient medium. Each small piece produces a new oil palm tree. Which t...

The diagram shows the human female reproductive system. [Figure 35.1] At which point is a surgical method of contraception usually carried out?

What is an advantage of human breast milk compared with bottle milk?

The inheritance of the ABO blood groups depends on three alleles Iᴬ, Iᴮ and Iᴼ. What are the possible genotypes for a person of blood group A?

Two heterozygous individuals are crossed. Some of the offspring show the recessive characteristic. What is the probability that one of these offspr...

The diagram shows a pair of chromosomes from the same cell. [Figure 40.1] What do the lines labelled P point to?

The diagram shows a plant cell. [Diagram for Q1] Which two structures are not found in animal cells?

The diagram represents apparatus used to investigate osmosis. [Diagram for Q3] Which molecules will move across the partially permeable membrane an...

Starch digestion occurs in the mouth cavity and in the duodenum but it stops in the stomach. Why is this?

One of the tissues in a leaf was described as consisting of 'loosely packed cells with a layer of moisture on their surface to dissolve gases so th...

A growing plant is regularly watered with a solution. The composition of the solution is changed after which the plant's leaves become yellow in co...

The diagram shows the alimentary canal and some associated organs. [Diagram for Q8] Which row shows where amylase is released?

The diagram shows a section of the wall of the small intestine. [Diagram for Q9] Into which structure are most lipid components absorbed for transp...

Which chemical change does not occur in the liver?

The photomicrograph shows part of a section through a root. [Diagram for Q12] The contents of cell X and the contents of cell Y are each tested wit...

The photograph shows a cross-section of an artery. [Diagram for Q13] Which labelled part would be of the same thickness in a vein?

The diagram shows an external view of the heart. [Diagram for Q15] The left coronary artery is blocked at the point labelled X. How would the block...

In a sprint race, athletes may have sharp muscle pains because the respiring cells produce

The diagram shows some structures in the respiratory system. [Diagram for Q17] What are the labelled structures?

The diagram shows apparatus used to investigate respiration. [Diagram for Q18] Which change will be seen and what is the explanation?

The diagram shows a joint between two bones in the human arm. [Diagram for Q19] What correctly describes the joint?

Which row shows the parts of the urinary system that carry out different functions?

On a hot day, how does the skin react to lower the internal temperature of the body?

The eye changes focus from looking at a wristwatch to looking at an aeroplane flying overhead. Which changes occur inside the eye?