Cambridge & Pearson Edexcel Past Paper Questions
Browse 35,704 questions from Cambridge O-Level & A-Level and Pearson Edexcel IGCSE & IAL exams. Click any question to practice.
How does hormonal control usually differ from nervous control?
A girl is waiting at a bus stop and is watching a bus travelling towards her. What happens to her eyes as the bus gets closer?
The diagram shows the skeleton of a dog. [Figure 24.1] Which bone is the radius?
Which statements about the use of heroin are correct?
What are characteristics of bacteria?
Which can be produced using bacteria? 1 alcohol 2 bread 3 cheese 4 yogurt
What eventually happens to all the energy in an ecosystem?
Which statement about the organisms at the beginning of food chains is correct?
How does an anti-malarial drug control malaria?
Many of the world's major rivers have dams to control the flow of water. Which consequence of this is of long-term benefit to humans?
What are genetically identical?
The diagram shows some of the stages in human reproduction, from ovum (egg) to fetus. [Figure 35.1] Where in the body does stage 2 occur?
Two heterozygous plants are crossed. What is the likely ratio of homozygous genotypes to heterozygous genotypes in the offspring?
Which row shows the sex chromosomes when parents have a baby boy?
Which statement about the process of genetic engineering is not correct?
Which term describes reproduction between those members of a species that are best fitted to their environment?
Which process only occurs by diffusion?
Which graph shows the effect of temperature on the rate of a reaction catalysed by amylase?
Which word equation describes photosynthesis?
A student performed an experiment to see whether chlorophyll is necessary for photosynthesis. What is a suitable plant for this experiment?
A surgical procedure involves the removal of the gall bladder. What are patients who have undergone this procedure not able to do?
The lengths of three parts of the human alimentary canal are shown. part length/cm P 350 Q 150 R 26 Which row identifies these parts?
Through which valve does the blood pass as it leaves the right ventricle and which structure does it next reach? valve structure atrioventricular (...
Which statement about white blood cells is correct?
At night the temperature is 3°C. A person goes outside for 30 minutes and their body temperature drops. What is a reason for this temperature change?
The table shows the percentages of four gases in inspired and expired air. inspired air expired air 0.04 4.14 0.50 2.00 20.80 12.20 78.50 78.50 Whi...
How does the composition of the blood in the renal vein differ from that in the renal artery? carbon dioxide urea concentration concentration highe...
How will the skin of an athlete respond during a long run? width of blood vessels sweating in skin surface decreases decreases decreases increases ...
Which statement describes a simple reflex action involving an arm or leg?
What is correct for the formation of urea? formed from formed in amino acids kidney amino acids liver carbohydrate kidney carbohydrate liver
What happens when a person focuses on a near object? ciliary muscles lens suspensory ligaments contract rounded loose contract thin taut relax roun...
The diagram shows bones of the human forelimb. [Figure 24.1] Which bone is the radius?
Which disease is strongly associated with cigarette smoking?
Which are the best conditions in a fermenter for the large-scale production of penicillin? aerobic anaerobic carbohydrates fats and Penicillium yea...
Waste products from microorganisms are used in the production of bread and yoghurt. Which waste products from microorganisms are used in these two ...
Which statements about mosquitoes are correct? where mosquitoes sex of the adult mosquito lay their eggs that sucks blood in decaying organic mater...
Some effects of deforestation are: 1 reduction of animal habitats 2 less absorption of carbon dioxide during photosynthesis 3 combustion releasing ...
1000 seeds were placed in damp soil, in the dark, at 25 °C for 4 days. Each day equal numbers of germinating seeds were removed, dried, and their c...
Which sign of syphilis may appear many years after infection, if treatment is not given?
The diagram shows some stages during the asexual reproduction of a single-celled organism. [Figure 36.1] Which row correctly shows the relative amo...
The diagram shows a family tree with the blood groups of some individuals labelled. [Figure 38.1] What are possible blood groups for the numbered i...
Which product of genetic engineering of plants is linked to farming techniques that could reduce biodiversity?
A seal is a mammal that spends most of its time in the sea. It breathes and respires in a very similar way to a human, but when it dives to hunt an...
The diagram shows three varieties, C, D and E, of the same species of insect, and three different leaf patterns, F, G and H, of the same species of...
The diagram shows a seed immediately after it is planted. [Figure 3.1] The bar chart shows the total mass, the mass of starch and the mass of sugar...
The diagram shows stages in the life cycle of the same plant. [Figure 4.1]
The diagram shows the position of some organs in the human body. The organs may be found in either a male or a female, or in both. [Figure 5.1]
Define osmosis and explain why osmosis is a special form of diffusion.
Describe the removal of named toxic materials and waste products of metabolism from the human body.
Describe and compare the following: