OCR GCSE Combined Science A Gateway revision notes
Cell level systems Revision Notes
Study Cell level systems with curriculum-aligned Revision Notes resources, practice links, and exam-focused support.
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Cell level systems
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Protein 24 diagram
Recognising Protein 24
Protein 24 supports Structure and Function of Sub-cellular Components in Eukaryotic and Prokaryotic Cells by giving students a diagram they can connect to the specification point being tested.
What To Explain
The membrane is selectively permeable, so substances move across it by diffusion, osmosis or active transport depending on the particle and gradient.
Syllabus Link
Primary private mapping: OCR GCSE Biology J250, Cell level systems.
Exam Answer Move
This is linked to: Account for the way the main sub-cellular structures of eukaryotic cells (plants and animals) and prokaryotic cells are related to their functions. A strong answer names the transport process and links it to membrane structure.
Protein 25 diagram
Recognising Protein 25
Protein 25 supports Structure and Function of Sub-cellular Components in Eukaryotic and Prokaryotic Cells by giving students a diagram they can connect to the specification point being tested.
What To Explain
The membrane is selectively permeable, so substances move across it by diffusion, osmosis or active transport depending on the particle and gradient.
Syllabus Link
Primary private mapping: OCR GCSE Biology J250, Cell level systems.
Exam Answer Move
This is linked to: Account for the way the main sub-cellular structures of eukaryotic cells (plants and animals) and prokaryotic cells are related to their functions. A strong answer names the transport process and links it to membrane structure.
Protein 26 diagram
Recognising Protein 26
Protein 26 supports Structure and Function of Sub-cellular Components in Eukaryotic and Prokaryotic Cells by giving students a diagram they can connect to the specification point being tested.
What To Explain
The membrane is selectively permeable, so substances move across it by diffusion, osmosis or active transport depending on the particle and gradient.
Syllabus Link
Primary private mapping: OCR GCSE Biology J250, Cell level systems.
Exam Answer Move
This is linked to: Account for the way the main sub-cellular structures of eukaryotic cells (plants and animals) and prokaryotic cells are related to their functions. A strong answer names the transport process and links it to membrane structure.
Protein 27 diagram
Recognising Protein 27
Protein 27 supports Structure and Function of Sub-cellular Components in Eukaryotic and Prokaryotic Cells by giving students a diagram they can connect to the specification point being tested.
What To Explain
The membrane is selectively permeable, so substances move across it by diffusion, osmosis or active transport depending on the particle and gradient.
Syllabus Link
Primary private mapping: OCR GCSE Biology J250, Cell level systems.
Exam Answer Move
This is linked to: Account for the way the main sub-cellular structures of eukaryotic cells (plants and animals) and prokaryotic cells are related to their functions. A strong answer names the transport process and links it to membrane structure.
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