AQA GCSE Combined Science Biology -
Paper 1 Exam Questions and Answers
Graded A+
What is the function of the nucleus? - Correct answer-Contains DNA to control the
cell
What is the function of the cell membrane? - Correct answer-Controls entry and
exit of substances
What is the function of the cell wall? - Correct answer-Provides structure and
support
What is the function of mitochondria? - Correct answer-Carry out respiration to
release energy
What is the function of ribosomes? - Correct answer-Protein synthesis
What is the function of chloroplasts? - Correct answer-Carry out photosynthesis
What is the function of a vacuole? - Correct answer-Contains cell sap
Define a prokaryote - Correct answer-A cell that does not have a nucleus
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,Define a eukaryote - Correct answer-A cell that has DNA in a nucleus
Name two cell structures that are in a eukaryote but not in a prokaryote - Correct
answer-Nucleus, mitochondria, chloroplasts
What is a plasmid? - Correct answer-A small loop of DNA in bacteria
What is a plant cell wall made from? - Correct answer-Cellulose
How is DNA stored in a bacterial cell? - Correct answer-As a single, free-floating
loop; also on plasmids
What is differentiation? - Correct answer-The process by which cells become
specialised
What is the equation for magnification? - Correct answer-Magnification = Image
Size ÷ Actual Size
A photograph of a cell is 15mm long. It has a magnification of 1100x. What is the
actual size? - Correct answer-0.0136mm, or 13.6µm
A cell is 12µm wide. It is magnified by 450 times. How big is the image? - Correct
answer-5400µm, or 5.4mm
If the image of a virus is 1.2mm, and its actual size is 0.2µm, how much has it been
magnified by? - Correct answer-6000 times
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, Convert 38500µm into mm - Correct answer-38.5mm
How many µm are in 1mm? - Correct answer-1000
Write 17400m in standard form - Correct answer-1.74 x 10^4 m
Write 0.0034 in standard form - Correct answer-3.4 x 10^-3
How is a sperm cell adapted for its function? - Correct answer-It has a tail to swim
to the egg
How is a nerve cell adapted for its function? - Correct answer-It has a long axon to
conduct impulses over long distances
How is a muscle cell adapted for its function? - Correct answer-It can contract to
cause movement
How is a root hair cell adapted for its function? - Correct answer-It has a large
surface area to increase osmosis of water
How is a xylem cell adapted for its function? - Correct answer-It has hollow ends
to transport water
How is a phloem cell adapted for its function? - Correct answer-It has sieve tubes
to transport sugars
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Paper 1 Exam Questions and Answers
Graded A+
What is the function of the nucleus? - Correct answer-Contains DNA to control the
cell
What is the function of the cell membrane? - Correct answer-Controls entry and
exit of substances
What is the function of the cell wall? - Correct answer-Provides structure and
support
What is the function of mitochondria? - Correct answer-Carry out respiration to
release energy
What is the function of ribosomes? - Correct answer-Protein synthesis
What is the function of chloroplasts? - Correct answer-Carry out photosynthesis
What is the function of a vacuole? - Correct answer-Contains cell sap
Define a prokaryote - Correct answer-A cell that does not have a nucleus
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,Define a eukaryote - Correct answer-A cell that has DNA in a nucleus
Name two cell structures that are in a eukaryote but not in a prokaryote - Correct
answer-Nucleus, mitochondria, chloroplasts
What is a plasmid? - Correct answer-A small loop of DNA in bacteria
What is a plant cell wall made from? - Correct answer-Cellulose
How is DNA stored in a bacterial cell? - Correct answer-As a single, free-floating
loop; also on plasmids
What is differentiation? - Correct answer-The process by which cells become
specialised
What is the equation for magnification? - Correct answer-Magnification = Image
Size ÷ Actual Size
A photograph of a cell is 15mm long. It has a magnification of 1100x. What is the
actual size? - Correct answer-0.0136mm, or 13.6µm
A cell is 12µm wide. It is magnified by 450 times. How big is the image? - Correct
answer-5400µm, or 5.4mm
If the image of a virus is 1.2mm, and its actual size is 0.2µm, how much has it been
magnified by? - Correct answer-6000 times
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, Convert 38500µm into mm - Correct answer-38.5mm
How many µm are in 1mm? - Correct answer-1000
Write 17400m in standard form - Correct answer-1.74 x 10^4 m
Write 0.0034 in standard form - Correct answer-3.4 x 10^-3
How is a sperm cell adapted for its function? - Correct answer-It has a tail to swim
to the egg
How is a nerve cell adapted for its function? - Correct answer-It has a long axon to
conduct impulses over long distances
How is a muscle cell adapted for its function? - Correct answer-It can contract to
cause movement
How is a root hair cell adapted for its function? - Correct answer-It has a large
surface area to increase osmosis of water
How is a xylem cell adapted for its function? - Correct answer-It has hollow ends
to transport water
How is a phloem cell adapted for its function? - Correct answer-It has sieve tubes
to transport sugars
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
