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ProfessorA permeable substance is a material that allows liquids or gases to pass through it. This can include materials like certain fabrics, membranes, or porous rock that enable the flow of fluids or gases. Permeable substances are often used in filtration systems or to control the movement of substances in various applications.
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When is a substance most likely to diffuse into a cell?
If there is the concentration of substance inside the cell is lesser than outside and cell membrane is permeable to the substance.
What substance can diffuse through a differentially permeable membrane?
Substances such as water, gases (like oxygen and carbon dioxide), and small molecules (like glucose and amino acids) can diffuse through a differentially permeable membrane. The ability of a substance to pass through the membrane depends on its size, charge, and concentration gradient.
Is cell wall is a permeable membrane?
No, the cell wall is not a permeable membrane. It acts as a rigid structure that provides support and protection to the cell, allowing certain substances to pass through pores, but it is not freely permeable like a membrane.
What does it mean to be selectively permeable semi-permeable?
Being selectively permeable or semi-permeable means that a membrane allows some substances to pass through while restricting the passage of others based on size, charge, or other properties. This selectivity enables the membrane to regulate the movement of molecules and ions in and out of cells or compartments, maintaining homeostasis and enabling essential biological processes.
Is the cell membrane selectively permeable?
Yes, the cell membrane is selectively permeable, meaning it allows certain molecules to pass through while blocking others. This property helps regulate the movement of ions and molecules in and out of the cell, maintaining cellular homeostasis.
