Multiple Choice
The fluid mosaic model of the membrane proposed that membranes:
6. Cell Membrane & Transport
Cell Envelope & Biological Membranes
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Components of the cell envelope include:
A
Cell membrane.
B
Cell wall.
C
Cytoplasm.
D
a, b, & c.
E
a & b.
Verified step by step guidance1
Understand the components of the cell envelope: The cell envelope typically includes structures that surround the cell, providing protection and structural support.
Identify the cell membrane: The cell membrane, also known as the plasma membrane, is a crucial part of the cell envelope. It acts as a barrier, controlling the movement of substances in and out of the cell.
Identify the cell wall: The cell wall is another component of the cell envelope, especially in bacteria, plants, fungi, and some protists. It provides additional support and protection.
Clarify the role of the cytoplasm: The cytoplasm is the gel-like substance inside the cell membrane, containing all organelles and cell parts. It is not part of the cell envelope.
Conclude which components are part of the cell envelope: Based on the definitions, the cell membrane and cell wall are part of the cell envelope, while the cytoplasm is not.
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