Cell Structure & Function (College Board AP Biology)

The following data were collected by observing subcellular structures of three different types of eukaryotic cells. 

RELATIVE AMOUNTS OF ORGANELLES IN THREE CELL TYPES 

Cell Type	Smooth ER	Rough ER	Mitochondria	Cilia	Golgi Bodies
X	Small amount	Small amount	Large number	Present	Small amount
Y	Large amount	Large amount	Moderate number	Absent	Large amount
Z	Absent	Absent	Absent	Absent	Absent

Based on an analysis of the data, identify a likely primary function of each cell type and explain how the data support the identification.