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Glucose and no other sugar is transported into cells by protein carrier molecules in the cell surface membrane. How do carrier molecules specifically recognize glucose?
Wiki User
∙ 12y ago
the receptors on the protein carrier recognise glucose allowing it to enter the cell :)
Wiki User
∙ 12y ago
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How do larger molecules move across epithelial membranes in the capillaries?
Large molecules are transported across a cell membrane by the process of process of exocytosis. This is when secretory vesicles secretes large molecules by the fusion of vesicles with the plasma membrane.
What are the protein molecules in a cell membrane that assist in cell transport?
Protein molecules are responsible for membrane transport. In passive transport diffusion is the phenomenon in which molecules flow naturally from areas of high concentration to lower concentrations.
What are proteins that are transported in vesicles made by?
Transport vesicles play a key part in moving molecules to and from the membrane-confined chambers of the secretory pathway. Proteins are transported in vesicles; the proteins are made on the cytosolic side of membranes.
What process are too large of molecules to be moved through the cell membrane and can be transported into the cell?
IDFK that's y i asked you
Some materials can move across the cell membrane against a concentration gradient by?
Large molecules such as glucose that cannot cross the phospholipid bilayer can still move across the membrane through transport proteins by active transport. Active transport uses energy to move molecules the bilayer.
Why is it necessary that you digest hydrolyze starchy food?
Sugar molecules are more easily transported through the cell membrane than larger starch molecules.
What molecules located in the membrane assist with facilitated diffusion?
Usually proteins are the molecules doing the selection of what other molecules get into or out of a cell.
How do larger molecules move across epithelial membranes in the capillaries?
Large molecules are transported across a cell membrane by the process of process of exocytosis. This is when secretory vesicles secretes large molecules by the fusion of vesicles with the plasma membrane.
What are the protein molecules in a cell membrane that assist in cell transport?
Protein molecules are responsible for membrane transport. In passive transport diffusion is the phenomenon in which molecules flow naturally from areas of high concentration to lower concentrations.
Which solutes were able to pass through the 20 MWCO membrane?
None. The molecules were either too polar or they were too big to be transported.
How are selectively permeable membranes essential for life?
Because they allow the passage of water, lipids, nutrients and ions into the cell while checking large molecules and larger polar molecules. These are controlled by transport proteins in the cell membrane. Also the membrane can surround molecules and pinch off so that molecules can be transported in and out of the cell.
Which is a factor that determies whether a mole can cross a cell membrane?
Lipid solubility determines if it will diffuse across. The presence of specific protein carrier molecules determines if it will be transported across the membrane.
An example of a molecules transported by carrier protein?
Co-transport is when molecules or ions are transported across a membrane (in fixed ratios) at the same time. One example is the Na/Ca exchanger - which transports Na in and Ca out of the cell simultaneously.
What are proteins that are transported in vesicles made by?
Transport vesicles play a key part in moving molecules to and from the membrane-confined chambers of the secretory pathway. Proteins are transported in vesicles; the proteins are made on the cytosolic side of membranes.
Site from which oxygen enters the pulmonary blood?
Oxygen passes through the membrane by diffusion. Most other molecules must be transported (carried) across by proteins which reside within the cell membrane.
Why are proteins and polysaccharides cannot be transported across a cell membrane by carrier proteins?
They are too large to be transformed by carrier proteins. They are moved across by Vesicles instead.
How is water transported across the membrane?
Water is transported by a passive transport called osmosis. Osmosis is diffusion of water across the membrane.
