Asked by Jennifer Burggraf on May 15, 2024
Verified
In general, water-soluble molecules diffuse through the ________; and lipid-soluble molecules diffuse through the ________.
A) membrane channels; membrane channels
B) membrane channels; lipid bilayer
C) lipid bilayer; membrane channels
D) lipid bilayer; lipid bilayer
E) None of the choices are correct.
Water-Soluble Molecules
Molecules that can dissolve in water, often essential for various biological processes in the body.
Lipid-Soluble Molecules
Molecules capable of dissolving in lipids or fats, often capable of easily passing through cell membranes.
Lipid Bilayer
The fundamental structure of cell membranes, comprising two layers of lipids primarily phospholipids.
- Clarify the operational mechanisms involved in the translocation of materials across membranes.
- Understand how substances diffuse across the plasma membrane.
Verified Answer
FD
Felicity DelarosaMay 18, 2024
Final Answer :
B
Explanation :
Water-soluble molecules typically diffuse through membrane channels, which are protein structures that allow specific molecules or ions to pass through. Lipid-soluble molecules, on the other hand, can diffuse directly through the lipid bilayer of the cell membrane due to their compatibility with the hydrophobic core of the membrane.
Learning Objectives
- Clarify the operational mechanisms involved in the translocation of materials across membranes.
- Understand how substances diffuse across the plasma membrane.