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Multiple Choice
What are the functions of the selectively permeable plasma membrane?
A
Synthesizing proteins for cellular functions
B
Producing energy for cellular processes
C
Storing genetic information
D
Regulating the passage of substances into and out of the cell
Verified step by step guidance
1
Understand the concept of a selectively permeable plasma membrane: It is a biological membrane that allows certain molecules or ions to pass through it by means of active or passive transport.
Recognize the primary function of the plasma membrane: It regulates the passage of substances into and out of the cell, maintaining homeostasis by controlling the internal environment of the cell.
Differentiate between the functions listed: Synthesizing proteins, producing energy, and storing genetic information are functions of other cellular components, not the plasma membrane.
Identify the cellular components responsible for the other functions: Ribosomes synthesize proteins, mitochondria produce energy, and the nucleus stores genetic information.
Conclude that the plasma membrane's role is crucial for cellular communication and transport, ensuring that essential nutrients enter the cell while waste products are expelled.