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Multiple Choice
When a cell surrounds a large particle with pseudopodia and then engulfs it, the process is called:
A
Phagocytosis
B
Pinocytosis
C
Exocytosis
D
Receptor-mediated endocytosis
Verified step by step guidance
1
Understand the key terms in the question: 'pseudopodia' refers to temporary extensions of the cell membrane used by some cells to move or engulf particles, and 'engulfs' indicates the cell is taking in a large particle.
Recall the definition of phagocytosis: it is a type of endocytosis where a cell engulfs large particles or microorganisms using pseudopodia, forming a vesicle around the particle.
Differentiate between the options: Pinocytosis involves the ingestion of liquid or small molecules, exocytosis is the process of expelling materials from the cell, and receptor-mediated endocytosis involves specific molecules binding to receptors before being engulfed.
Match the process described in the question (engulfing a large particle with pseudopodia) to the correct term, which is phagocytosis.
Conclude that the correct answer is 'Phagocytosis' based on the process described and the definitions of the terms provided.