2.1.3 Relation between the Density of Organelles and the Function of Cells

Density of Organelle

1. Density of organelle is refering to the abundance of certain organelles found in a cell.
2. The density of an organelle in a cell is related to the specific function of the cell.
3. Below are examples of high density of certain organelle and their reason.

Cell with high density of chloroplast.

Reason:
To trap sunlight to synthesise carbohydrate during photosynthesis.

Cell with high density of mitochondria

Muscle cells
Reason: Contraction of muscle during movement need a lot energy


Meristem Cells
Reason: Meristem cells in the plant shoots and roots are involved in cell division to produce new cells for growth. It needs a lot of energy for the activities.

Cell with high density of endoplasmic recticulum

Cells in salivary gland
Reason: Active in synthesing and secreting digestive enzyme

Pancreatic Cells
Reason: Active in synthesing and secreting hormone and enzyme