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Multiple Choice
By what endocytosis process do some white blood cells engulf bacteria?
A
Receptor-mediated endocytosis
B
Exocytosis
C
Pinocytosis
D
Phagocytosis
Verified step by step guidance
1
Understand the concept of endocytosis: Endocytosis is a cellular process in which substances are brought into the cell. It involves the engulfing of external materials by the cell membrane, forming a vesicle.
Identify the types of endocytosis: There are several types of endocytosis, including phagocytosis, pinocytosis, and receptor-mediated endocytosis. Each type serves a different function and involves different mechanisms.
Define phagocytosis: Phagocytosis is a type of endocytosis where cells, such as white blood cells, engulf large particles or microorganisms like bacteria. It is often referred to as 'cell eating.'
Differentiate phagocytosis from other types: Unlike pinocytosis, which involves the ingestion of liquid and small particles, phagocytosis targets larger particles. Receptor-mediated endocytosis is more specific, involving receptors to capture specific molecules.
Apply the concept to the problem: Recognize that white blood cells use phagocytosis to engulf bacteria, as this process is designed to handle large particles and pathogens, aiding in the immune response.