Cambridge & Pearson Edexcel Past Paper Questions

The diagram shows the 28 days of a typical menstrual cycle. The letters around the outside indicate different points in the cycle. Which row shows ...

The diagram shows the arrangement of blood vessels in the uterus wall and placenta of a pregnant woman. What will increase in concentration in the ...

Some lizards in a population had longer leg bones than others. They were able to climb better than the lizards with shorter legs, so they were able...

The genotype for the height of an organism is written as Tt. Which conclusion may be drawn?

The diagram shows some apparatus set up to produce alcohol by fermentation. What is the purpose of the layer of oil?

The diagram shows a pyramid of biomass. Which percentage of biomass is passed from the primary consumer to the secondary consumer?

The diagram shows part of the carbon cycle. Which row shows the correct labels for the numbered boxes?

Which human activity is likely to contribute most to global warming?

Drainage from fields where nitrogen-containing fertilisers have been spread can result in fish dying in rivers. Which sequence of events describes ...

How permeable are the cell wall and the cell membrane in a plant cell?

The diagram shows an arthropod. [Figure 2.1] Using the key, what correctly identifies the arthropod in the picture? 1 has wings ......................

Which statements about diffusion are correct?

Some ways in which molecules may move into and out of cells are listed. 1 Molecules move from a higher concentration to a lower concentration. 2 Mo...

Food tests were carried out on a solution containing biological molecules. The table shows the results of the tests. name of test: biuret test, res...

The graph shows the concentration of maltose produced when amylase digests starch at different pH values. [Figure 6.1] What explains the shape of t...

The diagram shows a section through part of a leaf from a dicotyledonous plant. [Figure 7.1] Which cells carry out photosynthesis?

Which row shows why plants need magnesium ions and nitrate ions?

Root hairs take in water and ions from the soil. Which table shows the correct concentrations of water and ions in the root hair?

A herbaceous plant, growing in a nutrient solution, is placed in a well-lit container. Humid air is passed through the container. The diagram shows...

Some of the nutrients in sweet potatoes are listed. 1 calcium 2 fibre 3 iron 4 vitamin C Which nutrient will help to prevent each disease?

A person who has coeliac disease has flattened villi in their ileum. If a person with coeliac disease eats the same quantity and types of food as a...

Which process does not result in an overall loss of energy from the organism?

When yeast cells respire anaerobically, which substance is used and which substances are produced?

Which chamber of the heart has the thickest muscular walls?

The diagram shows the human circulatory system. [Figure 18.1] At which point is the pressure of the blood circulating through the blood vessels the...

Which diagram describes the roles of a mosquito and Plasmodium in the disease malaria?

The bar chart shows the percentage of women who had babies with low birth weight. Some of these women were smokers and some were non-smokers. [Figu...

Which disease might be treated successfully with an antibiotic?

When babies are born, they have some passive immunity. Which conditions are needed for passive immunity to develop?

In which structure is there a fluid with a low concentration of urea? [Figure 23.1]

A person blinks when an insect flies into their eye. What explains this reflex action?

The graph shows changes in the diameter of a person's pupils while outdoors on a sunny day. [Figure 25.1] At which time did the person take off the...

The graph shows the blood glucose concentration for a person in the hours after eating breakfast at 07:00. [Figure 26.1] Which level of blood gluco...

Which hormone causes blood glucose concentration to be lowered?

Which statement about auxin is correct?

The diagram shows some stages in cell division in a fruit fly. [Figure 29.1] Cell X contains 8 chromosomes. How many chromosomes are in cell Y and ...

Which statement applies to organisms that reproduce asexually?

Which diagram matches the hormones with their functions in preparation for pregnancy?

Which row describes the exchange of substances at the placenta?

In a strand of DNA containing 100 nucleotide pairs, 46 nucleotides contain the base A. How many nucleotides in this DNA strand contain the base T?

Two brothers had different blood groups. One was blood group A and the other was blood group B. What can be concluded about their parents' blood gr...

The diagram shows a fermenter that is used to grow the fungus Penicillium, to produce penicillin. [Figure 36.1] What is the function of the outer w...

The diagram shows four ecological pyramids. [Figure 37.1] In a food chain, grass is eaten by cows. The cows have insects living on their skin. The ...

The diagram shows a simplified nitrogen cycle. [Figure 38.1] Which process in the cycle happens at stage X?

The human body produces over fifty different hormones.

Meerkats are small mammals that live in deserts which are dry and open habitats. Deserts are very hot during the day but cold at night. Meerkats ar...

Fig. 3.1 shows a young tomato plant growing near a window. Cells from two positions in the stem are also shown. [Figure 3.1] The cells at X divide ...

Fig. 4.1 shows a label from a snack bar. [Figure 4.1]

Myopia is an eye condition. If a person has myopia, near objects can be seen clearly but not those that are far away. It can happen when the eyebal...

The human heart pumps blood which circulates around the body in blood vessels.