Which organelle contributes to phagocytosis in white blood cells?

The endoplasmic reticulum (ER) is primarily involved in the synthesis of proteins and lipids, as well as the processing and transport of these molecules within the cell. It does not play a direct role in phagocytosis or the degradation of engulfed materials, which is the primary function of lysosomes.

Vacuoles primarily serve as storage organelles that maintain turgor pressure in plant cells and store nutrients or waste products. While vacuoles may play a role in some forms of endocytosis, they are not specifically responsible for the enzymatic breakdown of materials involved in phagocytosis.

The Golgi apparatus is responsible for modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles. It does not participate in the phagocytosis process itself, as its role is more focused on trafficking cellular components rather than digesting engulfed particles.