, 2
1.1 Scientists are investigating different types of cells and their functions.
Prokaryotic cells and eukaryotic cells have different features.
Give an example of a prokaryotic organism.
[1 mark]
bacterium– 1 mark
Describe one difference in how genetic material is organised in prokaryotic
1.2
cells compared to in eukaryotic cells.
[1 mark]
prokayotic cells do not have a nucleus, do contain plasmids/loop of dna
Scientists studied cells from both plants and animals.
1.3
Nametwostructures that are present in plant cells but not in animal cells.
[2 marks]
chloroplasts– 1 mark
permanent vacuole – 1 mark
1.4 Below is a diagram of a root hair cell.
A root hair cell is a specialised cell.
What is the name given to the process that produces specialised cells?
[1 mark]
differentiation
– 1 mark
2025 AQA Triple Biology H Paper 1 MARK SCHEME.
, 3
Root hair cells in plants contain many mitochondria. This helps the root hair
1.5
cell to carry out its function.
Explain how mitochondria help a root hair cell carry out its function.
[2 marks]
releases energy via (aerobic) respiration
– 1 mark
energy needed for active transport of mineral
– 1ions
mark
A student observes some onion cells under a light microscope.
1.6
image: Flaticon.com
78mm
micrometers
The actual length of the cell in the diagram is 150μm ( ).
Calculate the magnification of the microscope.
[3 marks]
magnification = image size
÷ actual size
= 78mm÷ 150µm
converts units:
= 78,000μm÷ 150μm
= 520
Magnification =520– 3 marks
2025 AQA Triple Biology H Paper 1 MARK SCHEME.
1.1 Scientists are investigating different types of cells and their functions.
Prokaryotic cells and eukaryotic cells have different features.
Give an example of a prokaryotic organism.
[1 mark]
bacterium– 1 mark
Describe one difference in how genetic material is organised in prokaryotic
1.2
cells compared to in eukaryotic cells.
[1 mark]
prokayotic cells do not have a nucleus, do contain plasmids/loop of dna
Scientists studied cells from both plants and animals.
1.3
Nametwostructures that are present in plant cells but not in animal cells.
[2 marks]
chloroplasts– 1 mark
permanent vacuole – 1 mark
1.4 Below is a diagram of a root hair cell.
A root hair cell is a specialised cell.
What is the name given to the process that produces specialised cells?
[1 mark]
differentiation
– 1 mark
2025 AQA Triple Biology H Paper 1 MARK SCHEME.
, 3
Root hair cells in plants contain many mitochondria. This helps the root hair
1.5
cell to carry out its function.
Explain how mitochondria help a root hair cell carry out its function.
[2 marks]
releases energy via (aerobic) respiration
– 1 mark
energy needed for active transport of mineral
– 1ions
mark
A student observes some onion cells under a light microscope.
1.6
image: Flaticon.com
78mm
micrometers
The actual length of the cell in the diagram is 150μm ( ).
Calculate the magnification of the microscope.
[3 marks]
magnification = image size
÷ actual size
= 78mm÷ 150µm
converts units:
= 78,000μm÷ 150μm
= 520
Magnification =520– 3 marks
2025 AQA Triple Biology H Paper 1 MARK SCHEME.
