Explain why cells in a multicellular organism become specialised, and describe how groups of specialised cells are organised in the body.

Eduqas GCSE Biology — 1.1.1 Cell structure and organisation · Explain · 4 marks · View as Markdown

Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).

Model answer (4 marks)

Specialised cells are adapted to carry out a particular function.
Groups of similar specialised cells form a tissue.
Different tissues working together form an organ.
Organs working together form an organ system.

Examiner tips

Use the exact sequence of the mark scheme; list each point clearly.
Show the progression from cell to organ system.
Keep answers concise and use the terminology from the scheme.

Common mistakes

Mixing up the order of cell, tissue, organ, organ system.
Using vague terms like "different parts" instead of "tissues" or "organs".
Leaving out any of the four required points.

Mark scheme (4 marks)

Specialised cells are adapted to carry out a particular function
Groups of similar specialised cells form a tissue
Different tissues working together form an organ
Organs working together form an organ system

Key terms in this question

specialised cell · organ