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Multiple Choice
Which of the following are functions of the plasma membrane?
A
Storing genetic information
B
Generating ATP for cellular energy
C
Regulating the passage of substances into and out of the cell
D
Synthesizing proteins for cellular functions
Verified step by step guidance
1
Understand the role of the plasma membrane: The plasma membrane is a crucial component of the cell, primarily responsible for maintaining the cell's integrity and regulating the movement of substances in and out of the cell.
Identify the functions of the plasma membrane: The plasma membrane is involved in selective permeability, allowing certain molecules to pass through while blocking others. This regulation is essential for maintaining homeostasis within the cell.
Differentiate between the functions listed: Storing genetic information is a function of the nucleus, not the plasma membrane. Generating ATP is a function of mitochondria, and synthesizing proteins is primarily a function of ribosomes.
Focus on the correct function: The plasma membrane's primary function is to regulate the passage of substances into and out of the cell, ensuring that essential nutrients enter the cell and waste products are expelled.
Conclude with the importance of this function: By controlling the movement of substances, the plasma membrane plays a vital role in protecting the cell and facilitating communication with its environment.