A group of cells working together to carry out a particular job is called _____________. A group of these working together to carry out a particular job are called _________. A group of these working together to do a particular job make up a(n) __________.

The correct response accurately reflects the hierarchical organization of biological structures. The first blank requires a term that describes a group of cells working together to perform a specific function, which is best defined as a tissue. Tissues consist of similar types of cells that work collectively for a common purpose within an organism.

Following that, the term for a group of tissues working together for a particular function is an organ. Organs are structures that are made up of different types of tissues working in unison to carry out complex functions.

The last part of the question seeks the highest level of organization in this context, which is an organism. Organisms encompass various organ systems functioning in coordination to maintain life.

This progression from cell to tissue to organ to organism reflects the fundamental concept in biology that complexity builds from simpler units. Other combinations presented in the options do not follow this biological hierarchy correctly, nor do they accurately define the terms involved.