Paper 2 · November 2022 · Cells and Tissues
Which sentence correctly completes the definition: 'A cell is the basic structural and functional ___ of a living organism.'?
Asystem, made of several organs working together for one job
Btissue, made of many identical cells grouped together
Cunit, the smallest part able to carry out the processes of life
Dorgan, made of several different tissues working together
Explanation
A cell is the basic structural and functional unit of a living organism: the smallest unit that can carry out the processes of life such as respiration, nutrition and reproduction. A tissue is a group of similar cells, an organ is a group of tissues, and a system is a group of organs, so each of those is built up from cells, not the other way round.
Derived from ZIMSEC Biology 4025/2, November 2022, Q1(a)