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AQA GCSE Biology Triple Science 2026 Paper 1
Question Paper Verified Actual Exam 2026/2027
Complete Exam-Style Questions with Detailed
Rationales | 100% Verified | Pass Guaranteed –
A+ Graded
Part I: Cell Biology, Organisation & Digestive System
(Questions 1-15)
Q1: A student is examining a cheek cell under a light
microscope at 400× magnification. The cell they are observing
contains a nucleus, cytoplasm, cell membrane, and
mitochondria, but has no cell wall and no chloroplasts. Which
type of cell is the student most likely looking at?
A. A plant palisade cell from a leaf
B. A bacterial cell from a yogurt sample
C. An animal epithelial cell from the cheek lining [CORRECT]
D. A fungal hyphal cell from mould
Correct Answer: C
Rationale: The best answer is C because animal cells are defined
by having a nucleus and membrane-bound organelles like
,2
mitochondria, but lacking both a cell wall and chloroplasts—
features that distinguish them from plant cells (which have both)
and prokaryotic cells like bacteria (which lack a nucleus). This
matches the fundamental distinction between eukaryotic animal
cells and other cell types taught in the AQA specification.
Q2: A biology class is comparing eukaryotic and prokaryotic
cells. Which of the following structures is found in eukaryotic
cells but NOT in prokaryotic cells?
A. Cytoplasm
B. Ribosomes
C. Mitochondria [CORRECT]
D. Cell membrane
Correct Answer: C
Rationale: This choice is correct because mitochondria are
membrane-bound organelles that are characteristic of eukaryotic
cells only; prokaryotes like bacteria carry out respiration on their
cell surface membranes instead. While cytoplasm, ribosomes,
and cell membranes are present in both cell types, the presence
of a true nucleus and membrane-bound organelles like
mitochondria is the key distinguishing feature of eukaryotes
according to the specification.
,3
Q3: During a practical lesson, a student measures an animal cell
under a microscope. The image of the cell measures 8 mm
across the eyepiece graticule. If the actual size of the cell is 20
μm, what is the magnification being used?
A. ×40
B. ×200
C. ×400 [CORRECT]
D. ×1000
Correct Answer: C
Rationale: The best answer is C because using the magnification
formula (magnification = image size ÷ actual size), we convert 8
mm to 8000 μm, then divide 8000 by 20 to get ×400
magnification. This is a standard calculation that students must
master for their GCSE, and ×400 is a typical high-power lens
setting on school microscopes.
Q4: A scientist wants to observe the detailed internal structure of
a mitochondrion, including its inner folded membrane (cristae).
Which type of microscope would be most appropriate for this
purpose?
, 4
A. Light microscope at ×1500 magnification
B. Scanning electron microscope (SEM)
C. Transmission electron microscope (TEM) [CORRECT]
D. Stereo microscope
Correct Answer: C
Rationale: This choice is correct because transmission electron
microscopes use beams of electrons passed through ultra-thin
specimens to reveal internal organelle structures at extremely
high resolution—far beyond the ~200 nm limit of light
microscopes. While SEM shows 3D surface detail, TEM is
specifically designed for viewing internal cellular architecture
like cristae, which aligns with the electron microscopy content
in the AQA specification.
Q5: Stem cells are undifferentiated cells that can specialise into
different cell types. Which statement correctly describes a key
difference between embryonic stem cells and adult stem cells?
A. Embryonic stem cells can only differentiate into one type of
cell, while adult stem cells can become many types
AQA GCSE Biology Triple Science 2026 Paper 1
Question Paper Verified Actual Exam 2026/2027
Complete Exam-Style Questions with Detailed
Rationales | 100% Verified | Pass Guaranteed –
A+ Graded
Part I: Cell Biology, Organisation & Digestive System
(Questions 1-15)
Q1: A student is examining a cheek cell under a light
microscope at 400× magnification. The cell they are observing
contains a nucleus, cytoplasm, cell membrane, and
mitochondria, but has no cell wall and no chloroplasts. Which
type of cell is the student most likely looking at?
A. A plant palisade cell from a leaf
B. A bacterial cell from a yogurt sample
C. An animal epithelial cell from the cheek lining [CORRECT]
D. A fungal hyphal cell from mould
Correct Answer: C
Rationale: The best answer is C because animal cells are defined
by having a nucleus and membrane-bound organelles like
,2
mitochondria, but lacking both a cell wall and chloroplasts—
features that distinguish them from plant cells (which have both)
and prokaryotic cells like bacteria (which lack a nucleus). This
matches the fundamental distinction between eukaryotic animal
cells and other cell types taught in the AQA specification.
Q2: A biology class is comparing eukaryotic and prokaryotic
cells. Which of the following structures is found in eukaryotic
cells but NOT in prokaryotic cells?
A. Cytoplasm
B. Ribosomes
C. Mitochondria [CORRECT]
D. Cell membrane
Correct Answer: C
Rationale: This choice is correct because mitochondria are
membrane-bound organelles that are characteristic of eukaryotic
cells only; prokaryotes like bacteria carry out respiration on their
cell surface membranes instead. While cytoplasm, ribosomes,
and cell membranes are present in both cell types, the presence
of a true nucleus and membrane-bound organelles like
mitochondria is the key distinguishing feature of eukaryotes
according to the specification.
,3
Q3: During a practical lesson, a student measures an animal cell
under a microscope. The image of the cell measures 8 mm
across the eyepiece graticule. If the actual size of the cell is 20
μm, what is the magnification being used?
A. ×40
B. ×200
C. ×400 [CORRECT]
D. ×1000
Correct Answer: C
Rationale: The best answer is C because using the magnification
formula (magnification = image size ÷ actual size), we convert 8
mm to 8000 μm, then divide 8000 by 20 to get ×400
magnification. This is a standard calculation that students must
master for their GCSE, and ×400 is a typical high-power lens
setting on school microscopes.
Q4: A scientist wants to observe the detailed internal structure of
a mitochondrion, including its inner folded membrane (cristae).
Which type of microscope would be most appropriate for this
purpose?
, 4
A. Light microscope at ×1500 magnification
B. Scanning electron microscope (SEM)
C. Transmission electron microscope (TEM) [CORRECT]
D. Stereo microscope
Correct Answer: C
Rationale: This choice is correct because transmission electron
microscopes use beams of electrons passed through ultra-thin
specimens to reveal internal organelle structures at extremely
high resolution—far beyond the ~200 nm limit of light
microscopes. While SEM shows 3D surface detail, TEM is
specifically designed for viewing internal cellular architecture
like cristae, which aligns with the electron microscopy content
in the AQA specification.
Q5: Stem cells are undifferentiated cells that can specialise into
different cell types. Which statement correctly describes a key
difference between embryonic stem cells and adult stem cells?
A. Embryonic stem cells can only differentiate into one type of
cell, while adult stem cells can become many types
