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.
Why are insecticides sometimes regarded as pollutants?
What is an advantage of sexual reproduction over asexual reproduction?
What are two male parts of a flower?
The table gives the average dietary requirements of iron in mg per day for females and males of various ages. [Figure 36.1] Why does a 20 year-old ...
The diagram shows a family in which some members suffer from a disease caused by a recessive allele. [Figure 39.1] Which are two members of the fam...
The diagram shows the parts of a plant growing above ground. plantlets brightly coloured flower fruit
The diagram shows a seed (Fig. 1) and a plant developing from this seed (Fig. 2). [Figure 2.1 - Fig. 1 and Fig. 2]
The diagram shows the arrangement of bones and muscles in the arm. [Figure 3.1]
The diagram shows the human thorax. [Figure 4.1]
Fig. 1 shows cells from a plant tissue which have been mounted on a slide with distilled water and viewed using a microscope. [Figure 5.1] Fig. 2 s...
The diagram shows the location of several features close to a river that runs from mountains into the ocean. [Figure 6.1]
The diagram shows a region of the alimentary canal and the associated organs. [Figure 7.1]
Describe and explain how each of the following affects enzyme activity: pH, temperature.
Describe and explain how each of the following affects the rate of photosynthesis: light intensity, temperature.
Fig. 1 and Fig. 2 show transverse sections of two types of blood vessel. [Figure 1] [Figure 2]
The diagram shows the human male reproductive organs and associated structures. fluid from organ G organ F -tube H tube E [Diagram showing human ma...
The diagram shows a pollen grain with a pollen tube growing from it. [Diagram of pollen grain with pollen tube] Pollen grains from the same type o...
The graph shows the variation in the concentration of dissolved carbon dioxide in the water of a pond over a period of 24 hours. [Graph showing con...
Describe the role of each of the following hormones in the menstrual cycle: FSH, progesterone.
The graph shows how the percentage of carbon dioxide in the atmosphere has changed since the year 1700. [Graph showing % carbon dioxide vs year fro...
Fig. 1 shows a leaf immediately after falling from a growing plant. Fig. 2 shows a leaf from the same plant several months after falling from the p...
Explain what is meant by each of the following terms and describe one example of each: discontinuous variation, continuous variation.
Explain what is meant by each of the following terms and describe one example of each in either a plant or an animal: diffusion, active transport.
During a lesson about animal and plant cells, a student reads out a number of statements about cell structure. Only three of his statements are cor...
Which process occurs by active transport?
Which statement about enzymes is correct?
Which diagram shows substances going into and out of a leaf when glucose is being formed?
A small mountain lake has aquatic plants growing underwater on the lake bed. Shortly after heavy rainfall the mud on the lake bed becomes churned u...
The elements listed are found in all living organisms. Which element is not obtained by plants from the soil?
Where do both physical and chemical breakdown of food occur?
What is the importance of the large surface area of the root hairs of a plant?
What is meant by double circulation?
The diagram shows a section through a vessel carrying oxygenated blood, as seen through a microscope. [Figure 14.1] What is this vessel?
Hypoplastic left heart failure is a rare heart condition in which the lower left chamber of the heart has not developed properly and is much smalle...
During a race the leg muscles of an athlete use more energy than can be supplied by aerobic respiration. Which substance will build up in the leg m...
What happens during expiration?
The pie charts show the proportions of gases in samples of inspired and expired air. [Figure 18.1] Which segments represent which gases?
The diagram represents a section through the skin. [Figure 20.1] Which row shows the functions of the labelled parts?
Which structure in the brain registers changes in the blood concentration?
The diagram shows a section through a human eye. [Figure 22.1] Where are the receptors for the pupil (iris) reflex?
Which flow diagram shows the regulation of blood sugar levels?
Which bone forms a ball and socket joint at one end and a hinge joint at the other?
During cheese-making the pH of milk falls and this causes milk proteins to coagulate. What is the main cause of the lower pH?
Four students are studying a pond ecosystem on a bright sunny day. They see the underwater plants giving off bubbles. What is the explanation of th...
The diagram shows a food web. [Figure 29.1] What is a food chain in this web?
Some bacteria survive best in waterlogged soils where they are able to obtain oxygen for respiration by breaking down nitrates. Nitrogen gas is rel...
Sewage is released into a river. [Figure 32.1] Which curve represents the oxygen concentration in the river?
The graph shows changes in the concentrations of hormones during a menstrual cycle. [Figure 35.1] Which curve represents progesterone?
Which statements about DNA are correct? 1 An allele carries molecules of DNA. 2 A chromosome includes a molecule of DNA. 3 A molecule of DNA is div...
What is not an advantage of genetic engineering?