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GCSE Science Revision Quizzes
Copyright notice: © Beaver Educational Resources This material is copyright. It is only for use by the staff and students of: Thornton College MK17 0HJ
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Which one of these processes is NOT increasing the level of carbon dioxide in the atmosphere?
increased use of wind power increased industrialisation increased deforestation increased world human population
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d) increased use of wind power
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2. The reason why identical twins look alike is because they have:
different alleles and a similar environment b) different alleles and a different environment c) the same alleles and a similar environment the same alleles and a different environment
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c) the same alleles and a similar environment
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3. Which of the following is not an adaptation
to living in arctic conditions? small ears of arctic foxes thick layer of body fat in seals white fur of polar bears large fins of fish
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d) large fins of fish
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4. Which genetic modification to plants
directly benefits human health? a) resistance to insects b) drought tolerance c) herbicide resistance d) vitamin A production
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d) vitamin A production
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5. Which of the following is not
a cause of extinction? new diseases mutation new predators changes in habitats
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b) mutation
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6. The removal of the insulin gene from
the human cell is carried out by: a virus a bacterium an enzyme a hormone
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c) an enzyme
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7. Which human activity has increased the
release of methane into the atmosphere? burning fossil fuels cutting down forests growing rice using pesticides
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c) growing rice
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8. Animals containing genes from other organisms are known as:
hybrid animals cloned animals transnucleic animals transgenic animals
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d) transgenic animals
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9. Children always inherit:
an equal number of genes from each parent more genes from their mother more genes from their father all of their genes from their mother
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a) an equal number of genes from each parent
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10. Charles Darwin suggested that:
humans evolved from monkeys humans and monkeys have exactly the same genes monkeys were humans’ main competitors humans and monkeys had a common ancestor
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d) humans and monkeys had a common ancestor
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11. Which of these statements raises ethical concerns?
Cloning could lead to greater food production Cloning could help to produce better farm animals Cloning might produce offspring with physical and mental problems d) Cloning could help to save endangered species
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c) Cloning might produce offspring with physical and mental problems
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12. An increase in greenhouse gases leads
to global warming because: less heat escapes from the atmosphere back into space more heat escapes from the atmosphere back into space more heat from the Sun is absorbed by the atmosphere chemical reactions of greenhouse gases generate extra heat
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a) less heat escapes from the atmosphere back into space
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13. A fertiliser is: solid and liquid waste produced by cows a chemical sprayed on crops to kill insects a chemical sprayed on land to kill weeds a chemical spread on land to increase crop growth
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d) a chemical spread on land to increase crop growth
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14. Which of the following is NOT a reason for genetically modifying crops?
to improve resistance to pests to increase diversity in nature to increase crop yield to improve the shelf life of produce
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b) to increase diversity in nature
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15. Scientists think that the earliest life
forms first appeared on Earth: about 1 million years ago about 3 million years ago about 1 billion years ago about 3 billion years ago
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d) about 3 billion years ago
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16. A mutation is: a bad feature that we inherit an adaptation to a new environment a gene which has been changed by scientists a random change in the DNA sequence
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d) a random change in the DNA sequence
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17. Natural selection is when organisms with:
no genetic mutations survive to breed the most genetic mutations survive to breed the best adaptations survive to breed the best adaptations survive but do not breed
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c) the best adaptations survive to breed
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18. A survey found that 20% of overweight children had parents who were also overweight. What can be concluded from this data? that obesity is caused by the environment that obesity is inherited that obesity is inherited but it is also influenced by the environment d) no definite conclusion can be made
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d) no definite conclusion can be made
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19. Cacti have a thick waxy cuticle and store water in their stems
19. Cacti have a thick waxy cuticle and store water in their stems. These features are known as: variations speciations modifications adaptations
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d) adaptations
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20. The shape of a DNA molecule is:
a double helix a triple helix a single spiral tubular
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a) a double helix
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