Multiple Choice
High blood cholesterol develops when what happens to the LDL receptor?
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13. Intracellular Protein Transport
Endocytic Pathways
Multiple Choice
In endocytic pathways, phagocytosis is primarily a function of which cell type?
A
Neurons
B
Skeletal muscle fibers
C
Macrophages (professional phagocytes)
D
Erythrocytes (red blood cells)
Verified step by step guidance1
Step 1: Understand the process of phagocytosis, which is a type of endocytosis where cells engulf large particles, such as pathogens or cellular debris.
Step 2: Identify the cell types listed: neurons, skeletal muscle fibers, macrophages, and erythrocytes, and consider their primary functions in the body.
Step 3: Recall that macrophages are specialized immune cells known as professional phagocytes, meaning they are highly efficient at performing phagocytosis to remove harmful particles.
Step 4: Recognize that neurons and skeletal muscle fibers do not perform phagocytosis as part of their main functions, and erythrocytes lack the cellular machinery for phagocytosis.
Step 5: Conclude that among the given options, macrophages are the primary cell type responsible for phagocytosis in endocytic pathways.
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