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because some molecules are bigger then othersand won't diffuse into the cell... hope that helps

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When some molecules go through a membrane faster than others the membrane is what?

The membrane is said to be selectively permeable or semipermeable when some molecules can pass through it faster than others. This property allows the membrane to regulate the passage of specific substances.


What is the name of the membrane that allows the movement of water and substances to move through the process of active transport and passive transport?

The cell membrane, also known as the plasma membrane, is responsible for regulating the movement of water and substances through processes like active transport and passive transport. It acts as a selectively permeable barrier, allowing certain molecules to pass through while blocking others.


How does the composition of the cell membrane help regulate the movement of substances into and out of the cell?

The cell membrane is composed of a phospholipid bilayer that is selectively permeable, allowing only certain substances to pass through. The presence of proteins, such as channels and carriers, also help regulate the movement of specific molecules across the membrane. Additionally, the membrane's fluidity and structure play a role in facilitating or hindering the diffusion of substances.


A membrane that allows some substances to pass through while excluding others would be called a?

semipermeable or selectively permeable.


What allows some materials to pass through it but keeps other materials out?

A selectively permeable membrane allows only certain molecules or substances to pass through, based on their size, charge, or other properties. This membrane acts as a barrier that can control the passage of specific substances while blocking others.

Related Questions

What does a selectively permeable membrane do?

A selectively permeable membrane allows some substances through it and does not allow others.Allows certain substances to pass but not others


What characteristics of cell membrane allows for some substances to pass through but not others?

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When some molecules go through a membrane faster than others the membrane is what?

The membrane is said to be selectively permeable or semipermeable when some molecules can pass through it faster than others. This property allows the membrane to regulate the passage of specific substances.


A membrane that allows some substances to pass through while excluding others would be called?

selectively permeable


Does it mean for a cell membrane to be selectively permeable?

it allows some substances to pass through but blocks the passage of others.


What lets substances like food and oxygen diffuse into body cells?

The semi-permeable membrane in cells. Allows some substances to go through and not others.


What is the name of the membrane that allows the movement of water and substances to move through the process of active transport and passive transport?

The cell membrane, also known as the plasma membrane, is responsible for regulating the movement of water and substances through processes like active transport and passive transport. It acts as a selectively permeable barrier, allowing certain molecules to pass through while blocking others.


How does the composition of the cell membrane help regulate the movement of substances into and out of the cell?

The cell membrane is composed of a phospholipid bilayer that is selectively permeable, allowing only certain substances to pass through. The presence of proteins, such as channels and carriers, also help regulate the movement of specific molecules across the membrane. Additionally, the membrane's fluidity and structure play a role in facilitating or hindering the diffusion of substances.


A membrane that allows some substances to pass through while excluding others would be called a?

semipermeable or selectively permeable.


What allows some materials to pass through it but keeps other materials out?

A selectively permeable membrane allows only certain molecules or substances to pass through, based on their size, charge, or other properties. This membrane acts as a barrier that can control the passage of specific substances while blocking others.


What is the part of the cell that materials pass through?

Materials pass through the cell membrane, which acts as a barrier between the cell's interior and the external environment. The cell membrane is selectively permeable, allowing certain substances to pass through while blocking others.


What part of the animal cell allows things to go in and out of the cell?

The cell membrane, which is a lipid bilayer, controls the movement of substances in and out of the cell through processes like diffusion, osmosis, and active transport. It acts as a selective barrier, allowing some substances to pass through while blocking others.