Paper 2 · November 2022 · Cells and Tissues
Which statement best describes cell specialisation?
AThe process by which a specialised cell reverts to its original unspecialised, general purpose form.
BThe process by which two different specialised cells fuse together to form one combined cell.
CThe process by which a cell divides repeatedly without ever changing its shape or function.
DThe process by which an unspecialised cell develops a particular structure and function suited to one job it performs in the organism.
Explanation
Cell specialisation is the process by which unspecialised cells become adapted in shape, size and internal structure to carry out one particular function efficiently, for example a red blood cell losing its nucleus to carry more oxygen, or a root hair cell growing a long extension to absorb more water.
Derived from ZIMSEC Biology 4025/2, November 2022, Q1(b)(i)