Cambridge & Pearson Edexcel Past Paper Questions

A father has blood group AB and the mother has blood group O. What is the predicted ratio of blood groups for the offspring?

Which statements about active transport in root hair cells are correct? 1 Energy is required. 2 Substances may be absorbed as ions. 3 The membrane ...

Discs of raw potato tissue are weighed (initial mass). They are then placed in sucrose solutions of different concentrations. After one hour their ...

What happens to an enzyme after it has catalysed a reaction?

Some chemical symbols are listed. 1 C6H12O6 2 CO2 3 H2O 4 O2 5 6C6H12O6 6 6CO2 7 6H2O 8 602 What is the equation for photosynthesis?

The diagram shows some of the structures seen in a section through a dicotyledonous leaf. [Figure 6.1] Which two features are missing from this dia...

The table describes some characteristics of four people. [Table with age/years, sex, level of activity, body weight/kg for people A, B, C, D] Which...

Which structure has villi to increase its surface area?

Which statements about root hairs are correct? 1 The cell membrane can allow movement of water and ions into and out of the cell. 2 The cell vacuol...

Which blood vessel will have the highest urea concentration after a protein-rich meal?

How does blood flow through the lungs differ from blood flow through the rest of the body?

Which statements about blood vessels are correct? [Table showing 'arteries always carry oxygenated blood' and 'the pulmonary vein carries deoxygena...

Which process does not use energy released from respiration?

In a kidney dialysis machine, which substance cannot diffuse through the dialysis membrane? [Figure 19.1]

On a hot day, the cheeks of a light-skinned person may appear red in colour. What is the cause of this?

The diagram shows a section through the skin. [Figure 22.1] Which structures are activated when a person feels cold?

In which situation would the amount of insulin secreted into a person's blood be highest?

The diagram shows the bones in the region of the right shoulder. [Figure 24.1] What is bone M?

Which of these organisms are microorganisms? 1 bacteria 2 yeast 3 viruses

Why is the flow of energy in an ecosystem said to be non-cyclic?

A square metre of grassland receives 1004000 kJ of sunlight energy per year. The table shows what happens to this energy. [Table of 'process' and '...

The diagram shows the origins of a type of pollutant entering an ocean bay. [Figure 32.1] What identifies the type of pollutant?

Which structure contains the ovary of a flowering plant?

The diagram shows the female reproductive system. [Figure 35.1] Where does implantation occur?

In the control of female fertility, which hormones could be used for preventing ovulation, and which could be used for promoting ovulation? [Table ...

A student wrote some statements about chromosomes, but made a number of mistakes. 1 There are 46 pairs of chromosomes in a human body cell. 2 In ga...

Elephants are hunted by poachers for their tusks, which are a source of ivory. In 1930, in a National Park, 1% of the elephants were born without a...

The diagram shows a family tree in which hereditary night-blindness occurs. [Figure 39.1] What is the chance that unborn child, 9, will be a male w...

The table shows some of the components found in 100cm³ of cow's milk, breast milk and breast milk substitute (formula milk). component | cow's mil...

The diagram shows the structure of a virus. [Figure 2.1] The diagram shows how the structural features found in plant cells and in animal cells ca...

The graph shows the rates of water loss for three plants, D, E and F, during the first 14 minutes of an experiment. The plants are of different spe...

Some people find that certain vegetables, such as Brussels sprouts, taste bitter and are unpleasant to eat. Scientists believe that one dominant al...

The diagrams show a model used to demonstrate the process of human breathing. Diagram G shows the model after breathing in, and diagram H after bre...

The diagrams show a man fishing. [Figure 6.1]

(a) Explain how energy from the Sun can eventually be used for active transport in the alimentary canal.

(a) Describe and explain how a protein molecule that is eaten becomes molecules of urea that are excreted.

(a) Describe and explain how a nitrate ion in the soil becomes part of a stored molecule in the seed of a plant.

A species of flowering plant has flowers of two types. Some of the plants of this species have flowers called pin and some of the plants have flowe...

Plants absorb light energy to use in the process of photosynthesis.

Syphilis is an infectious disease transmitted by sexual contact. It is possible to test the blood of a person for the presence of antibodies produc...

Proteins are an important component of the human diet. Protein molecules are digested and the products of digestion are absorbed into the blood.

The statements E to L relate to the process of cell division. E is used in the repair of damaged tissues F results in the production of diploid cel...

The diagrams show two types of cell specialised to carry out particular functions. Name each type of cell shown and state the relationship between ...

Respiration in the muscle cells of a human may take place when oxygen is available and when oxygen is not available.

Describe the possible harmful effects of human activity on the ecosystem of a tropical rainforest.

Following sexual intercourse in humans, fertilisation may take place.

The diagram shows the structure of a cell from a leaf of a green plant. [Figure 1.1] What are the numbered parts of the cell?

Which row correctly shows the number of molecules, for each substance used and produced, during photosynthesis?

The diagram shows the human alimentary canal. [Figure 8.1] In which part does protein digestion begin?

Blood flows away from the small intestine in the hepatic portal vein. Where does the blood go next, and what may happen there?