AQA Combined Biology paper
1 Exam Questions and Answers
100% PASS
What is the function of the nucleus?—ANSWER-Contains DNA to control the
cell
What is the function of the cell membrane?—ANSWER-Controls entry and
exit of substances
What is the function of the cell wall?—ANSWER-Provides structure and
support
What is the function of mitochondria?—ANSWER-Carry out respiration to
release energy
What is the function of ribosomes?—ANSWER-Protein synthesis
What is the function of chloroplasts?—ANSWER-Carry out photosynthesis
What is the function of a vacuole?—ANSWER-Contains cell sap
Define a prokaryote—ANSWER-A cell that does not have a nucleus
Define a eukaryote—ANSWER-A cell that has DNA in a nucleus
, Name two cell structures that are in a eukaryote but not in a prokaryote—
ANSWER-Nucleus, mitochondria, chloroplasts
What is a plasmid?—ANSWER-A small loop of DNA in bacteria
What is a plant cell wall made from?—ANSWER-Cellulose
How is DNA stored in a bacterial cell?—ANSWER-As a single, free-floating
loop; also on plasmids
What is differentiation?—ANSWER-The process by which cells become
specialised
What is the equation for magnification?—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?—ANSWER-0.0136mm, or 13.6µm
A cell is 12µm wide. It is magnified by 450 times. How big is the image?—
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?—ANSWER-6000 times
Convert 38500µm into mm—ANSWER-38.5mm
How many µm are in 1mm?—ANSWER-1000
Write 17400m in standard form—ANSWER-1.74 x 10^4 m
Write 0.0034 in standard form—ANSWER-3.4 x 10^-3
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
1 Exam Questions and Answers
100% PASS
What is the function of the nucleus?—ANSWER-Contains DNA to control the
cell
What is the function of the cell membrane?—ANSWER-Controls entry and
exit of substances
What is the function of the cell wall?—ANSWER-Provides structure and
support
What is the function of mitochondria?—ANSWER-Carry out respiration to
release energy
What is the function of ribosomes?—ANSWER-Protein synthesis
What is the function of chloroplasts?—ANSWER-Carry out photosynthesis
What is the function of a vacuole?—ANSWER-Contains cell sap
Define a prokaryote—ANSWER-A cell that does not have a nucleus
Define a eukaryote—ANSWER-A cell that has DNA in a nucleus
, Name two cell structures that are in a eukaryote but not in a prokaryote—
ANSWER-Nucleus, mitochondria, chloroplasts
What is a plasmid?—ANSWER-A small loop of DNA in bacteria
What is a plant cell wall made from?—ANSWER-Cellulose
How is DNA stored in a bacterial cell?—ANSWER-As a single, free-floating
loop; also on plasmids
What is differentiation?—ANSWER-The process by which cells become
specialised
What is the equation for magnification?—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?—ANSWER-0.0136mm, or 13.6µm
A cell is 12µm wide. It is magnified by 450 times. How big is the image?—
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?—ANSWER-6000 times
Convert 38500µm into mm—ANSWER-38.5mm
How many µm are in 1mm?—ANSWER-1000
Write 17400m in standard form—ANSWER-1.74 x 10^4 m
Write 0.0034 in standard form—ANSWER-3.4 x 10^-3
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Katelyn Whitman
