Question

question 2 (3 points maximum): the following data were collected by observing the subcellular structures of three different types of 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.

Explanation:

1. Cell Type X: It has a large number of mitochondria which are the power - houses of the cell for energy production, and cilia which are often involved in movement or moving substances across the cell surface. So, a likely primary function is movement or energy - consuming movement - related processes. The large number of mitochondria provides the energy required for such activities, and the presence of cilia supports the movement aspect.
2. Cell Type Y: With large amounts of smooth and rough endoplasmic reticulum (ER) and Golgi bodies, it is likely involved in protein and lipid synthesis and modification. The rough ER is associated with protein synthesis, the smooth ER with lipid synthesis, and the Golgi bodies with modifying, sorting, and packaging of proteins and lipids. The moderate number of mitochondria can provide energy for these synthetic processes.
3. Cell Type Z: Since all organelles are absent, it might be a non - living cell or a very specialized cell that has lost its organelles, perhaps a red blood cell in mammals which lacks most organelles to maximize space for carrying oxygen.

Answer:

1. Cell Type X: Likely function is movement or energy - consuming movement - related processes. Data support: Large number of mitochondria for energy and presence of cilia for movement.
2. Cell Type Y: Likely function is protein and lipid synthesis and modification. Data support: Large amounts of rough and smooth ER for synthesis and large amounts of Golgi bodies for modification and packaging.
3. Cell Type Z: Likely a non - living cell or a highly specialized cell with lost organelles. Data support: Absence of all major organelles.