target cells
they are little organs called organelles.
Organs are made up of many cells. Unicellular organisms by definition have only one cell, so they can't have organs.
organ system
Perform specific life functions for the complete body.
target cells
they are little organs called organelles.
ya
Organs are made up of many cells. Unicellular organisms by definition have only one cell, so they can't have organs.
A grouping of tissues that share a specific function.
system.
Groups of tissues that work together to perform a specific function make up organs. These organs then make up systems.
Hormones work by affecting Target Organs
systems
organ system
An organ is (organs are) made up of different kinds of tissues arranged together to perform a specific function.
muscels