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Is endocytosis considered an active or passive transport process?
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6. The Membrane
Endocytosis and Exocytosis
Scelta multipla
Exocytosis occurs as a result of which of the following cellular processes?
A
Fusion of vesicles with the plasma membrane
B
Breakdown of the nuclear envelope
C
Engulfment of particles by the plasma membrane
D
Formation of new lysosomes
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Understand the concept of exocytosis: Exocytosis is a cellular process where materials are transported out of the cell by vesicles. These vesicles fuse with the plasma membrane to release their contents into the extracellular space.
Analyze the first option: 'Fusion of vesicles with the plasma membrane.' This directly describes the mechanism of exocytosis, where vesicles merge with the plasma membrane to release substances.
Evaluate the second option: 'Breakdown of the nuclear envelope.' This process is unrelated to exocytosis and typically occurs during cell division (mitosis or meiosis).
Evaluate the third option: 'Engulfment of particles by the plasma membrane.' This describes endocytosis, which is the opposite of exocytosis, where the cell takes in materials rather than releasing them.
Evaluate the fourth option: 'Formation of new lysosomes.' While lysosomes are involved in intracellular digestion, their formation is not directly related to the process of exocytosis.
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