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What structures allow large important molecules to pass through the cell membrane?
Wiki User
∙ 11y ago
A cell membrane is in every plant and animal and it lets in water, nutrients, and food to the cell. The membrane MUST be permeable because then it wouldn't of let the in water, nutrients, and food into the cell. If the membrane was stiff, the molecules of water, nutrients, and food would not be able to fit into the cell.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoLarge molecules, such as glucose, require the assistance of integral membrane proteins to pass through the cell membrane. These can be channels or transporters.
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Molecules can pass through the cell membrane of the human cell?
The molecules that can pass through the cell membrane of the human cell include water. Other molecules include fat soluble vitamins.
How water molucleus move through the cell membrane doing out mosis?
During osmosis, water molecules move through the cell membrane by passing through microscopic openings in the membrane. The openings are large enough for the water molecules to pass through.
What kind of molecules can easily pass through a cell membrane?
Small, Non-polar molecules. If the molecule is polar, it sticks to both sides of the membrane, and has to go through selective routes. The easiest to get through is the Non-polar (oxygen and carbon).
What can you conclude about the permeability of potato cytoplasm with respect to sucrose and water molecules?
H20 molecules can pass through the membrane freely, however sucrose molecules are too large.
When some molecules go through a membrane faster than others the membrane is what?
selectively permeable
What is a holes in plasma membrane through which molecules pass across capillary wall?
The plasma membrane is made up of a lipid bilayer and some proteins. The transmembrane proteins are the structures which are involved in the transport of molecules in or through the cell.
How do small molecules get through the cell membrane against a concentration?
How do small molecules get through a cell membrane
Why do passenger molecules need to be helped by the carrier protein?
Some molecules can't go through the cell membrane.
Which molecules difuse through the lipid portion of the plasma membrane?
Only nonpolar (hydrophobic) molecules can pass through the bi-lipid membrane. For example, hormones are nonpolar, and they can pass through the membrane.
Do substances enter any plant or animal cell by passing through a cell membrane?
Molecules can not pass through the cell membrane, because endocytosis is important for those large molecules that can not pass through the cell membrane!!
Why do sugar molecules not diffuse through a plant cell membrane?
The membrane is semi-permeable. Sugar molecules are too large to diffuse through.
When do molecules not get through the cell membrane?
when your not breathing
Why do cells need to use transport proteins to function?
Carbohydrates cannot pass directly through the cell membrane. some important molecules are too large to pass through the cell membrane
Molecules can pass through the cell membrane of the human cell?
The molecules that can pass through the cell membrane of the human cell include water. Other molecules include fat soluble vitamins.
What is the movement of molecules through a membrane due to the pressure of a liquid on that membrane?
Osmosis.
What type of molecules embebbed in the plasma membrane allows molecules to pass through the membrane by active or passive transport?
proteins
Describe the water molecules move through the cell membrane during osmosis?
Describe how water molecules move through the cell membrane during osmosis?
