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Recently had a homework on the cell membrane, i do know that larger molecules that cant fit through the polar heads into the cell (like gases can...and small molecules?!) can get through only if they qualify the shape fitting of the channel protein- the one that reaches all the way from the outside to the inside of the membrane.
hope this helps
What else can I help you with?
Which molecules cannot pass through the membrane?
Large molecules such as proteins and nucleic acids cannot pass through the cell membrane.
How do molecules that are too large to cross the membrance enter into the cell?
Large molecules can enter a cell through endocytosis, where the cell membrane folds around the molecule, forms a vesicle, and brings it into the cell. This process allows the cell to take in nutrients, signaling molecules, and other substances that are too large to pass through the membrane directly.
How do large polar molecules enter the cell?
Large polar molecules enter the cell through facilitated diffusion or active transport, which require the assistance of specific protein channels or carriers in the cell membrane. These proteins help transport the molecules across the membrane against a concentration gradient or when the molecules are too large to pass through on their own.
What structures allow large important molecules to pass through the cell membrane?
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.
What kinds of molecules, including the keyword, face difficulty in passing through a cell membrane?
Large or polar molecules, such as proteins or carbohydrates, face difficulty in passing through a cell membrane due to their size or charge.
Which molecules cannot pass through the membrane?
Large molecules such as proteins and nucleic acids cannot pass through the cell membrane.
Large molecules are surrounded by the cell membrane and enter the cell?
Large molecules can enter cells through processes like endocytosis, where the cell membrane surrounds the molecule and engulfs it in a vesicle. This allows large molecules to be transported into the cell without crossing the lipid bilayer of the membrane.
What is the process by which large molecules enter a cell through pouches in the membrane?
The process by which large molecules enter a cell through pouches in the membrane is called endocytosis. During endocytosis, the cell membrane forms a pouch around the molecule, encloses it, and brings it into the cell as a vesicle. This allows the cell to take in larger molecules that would not be able to pass through the membrane on their own.
How do molecules that are too large to cross the membrance enter into the cell?
Large molecules can enter a cell through endocytosis, where the cell membrane folds around the molecule, forms a vesicle, and brings it into the cell. This process allows the cell to take in nutrients, signaling molecules, and other substances that are too large to pass through the membrane directly.
How do large polar molecules enter the cell?
Large polar molecules enter the cell through facilitated diffusion or active transport, which require the assistance of specific protein channels or carriers in the cell membrane. These proteins help transport the molecules across the membrane against a concentration gradient or when the molecules are too large to pass through on their own.
Why do sugar molecules not diffuse through a plant cell membrane?
Sugar molecules do not diffuse through a plant cell membrane because they are too large and polar to pass through the hydrophobic interior of the lipid bilayer. Instead, sugar molecules are transported across the membrane by specific transport proteins, such as sugar transporters, that facilitate their movement into the cell.
Large molecules and wastes move through the membrane through .?
Large molecules and waste materials move through the cell membrane primarily via vesicular transport mechanisms, such as endocytosis and exocytosis. In endocytosis, the cell membrane engulfs the material, forming a vesicle that brings it into the cell. Conversely, in exocytosis, vesicles containing waste or large molecules fuse with the membrane to release their contents outside the cell. These processes allow for the transport of substances that cannot pass through the membrane by simple diffusion.
How do small molecules get through the cell membrane against a concentration?
How do small molecules get through a cell membrane
What structures allow large important molecules to pass through the cell membrane?
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.
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!!
How do large molecules get into the cell if they cannot fit via diffusion?
Through specialized carrier proteins in the cell membrane.
What kinds of molecules, including the keyword, face difficulty in passing through a cell membrane?
Large or polar molecules, such as proteins or carbohydrates, face difficulty in passing through a cell membrane due to their size or charge.
