Join thousands of students who trust us to help them ace their exams!Watch the first video
Multiple Choice
What is exocytosis used for in the cell?
A
To replicate DNA within the cell
B
To generate ATP within the cell
C
To bring substances into the cell
D
To transport substances out of the cell
Verified step by step guidance
1
Understand the concept of exocytosis: Exocytosis is a cellular process where substances are transported out of the cell. It involves the fusion of vesicles with the plasma membrane to release their contents into the extracellular space.
Identify the role of vesicles: Vesicles are small membrane-bound sacs that transport substances within the cell. In exocytosis, these vesicles carry materials such as proteins, lipids, or waste products to the cell membrane.
Recognize the importance of the plasma membrane: The plasma membrane acts as a barrier and gateway for substances entering and exiting the cell. During exocytosis, vesicles merge with the plasma membrane to expel their contents.
Differentiate exocytosis from other cellular processes: Unlike endocytosis, which brings substances into the cell, exocytosis is specifically used to move substances out of the cell. It is not involved in DNA replication or ATP generation.
Apply this understanding to the problem: Given the options, exocytosis is used to transport substances out of the cell, making it the correct answer in this context.