The engulfing of solid food particles by a cell through infolding of its membrane is called
Correct answer: D. phagocytosis
- A. pinocytosis
- B. osmosis
- C. facilitated diffusion
- D. phagocytosis
Explanation
Phagocytosis, literally cell eating, wraps the membrane around a particle to form a vacuole, as white blood cells do to bacteria. Pinocytosis is the drinking of fluid droplets, and both are forms of endocytosis that need membrane, unlike diffusion.
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Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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