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Substances with a hydrophillic-lipophillic balance are permeable through the cell membrane.

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Keely Brakus

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3y ago

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What type of molecules can easily go through your cell membrane or are permeable to the cell membrane?

Substances with a hydrophillic-lipophillic balance are permeable through the cell membrane.


What molecules are permeable to the cell membrane?

Hydrophobic molecules are permeable to the cell membrane. Anything that is samll and hydrophobic will pass easily. Larger, hydrophilic molecules require a transport protein to allow permeability.


What are you considering when you referring to how easily materials can pass through membrane?

What you are considering when you are referring to how easily materials can pass through a membrane is how permeable the cell wall or membrane is.


What are the three molecules that cannot easily pass through the membrane?

The three molecules that cannot easily pass through the membrane are large molecules, charged molecules, and polar molecules.


Is the plasma membrane permeable to small and charged molecules?

The plasma membrane is selectively permeable, meaning it allows certain substances to pass while restricting others. Small, uncharged molecules, such as oxygen and carbon dioxide, can easily diffuse through the membrane. However, charged molecules, such as ions, generally cannot pass freely due to the hydrophobic nature of the lipid bilayer. Instead, they require specific transport proteins or channels to facilitate their movement across the membrane.


Can hydrophobic molecules pass through a membrane?

Yes, hydrophobic molecules can pass through a membrane because the lipid bilayer of the membrane is also hydrophobic, allowing them to move through easily.


Why is glucose allowed to pass through a semipermeable membrane and not starch?

Whether molecules are able to pass through the membrane depends on the size of the molecules. Smaller ones can, and larger ones cannot. Glucose can pass through a cell membrane because it is a monomer, which is a smaller molecule than the polymer molecules of starch.


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).


How do molecules pass through the visking tube?

Molecules pass through a visking tube, which is a semi-permeable membrane, based on their size and concentration gradient. Smaller molecules, such as water and glucose, can easily diffuse through the pores of the membrane, while larger molecules, like starch or proteins, cannot. This selective permeability allows for the movement of certain substances while restricting others, facilitating processes such as osmosis and diffusion.


What is an example for selectively premeable?

Cell membranes are selectively permeable as they allow certain molecules to pass through while restricting others. For example, cell membranes allow small molecules like water and gases to pass through freely, while larger molecules like proteins and ions require specific channels or transporters to move in and out of the cell.


What can you conclude about the permeability of potato cytoplasm with respect to sucrose and water molecules?

The permeability of potato cytoplasm to water molecules is high, allowing water to easily move in and out of the cell. However, the permeability to sucrose molecules is lower, as they require specific transport proteins to pass through the cell membrane. This difference in permeability affects how sucrose and water move across the cell membrane in potatoes.


What molecules do not pass through the cell membrane easily while molecules pass through the membrane?

Molecules that do not pass through the cell membrane easily are typically large, polar, or charged, such as glucose, ions (like Na⁺ and K⁺), and proteins. In contrast, small, nonpolar molecules, such as oxygen and carbon dioxide, can easily diffuse through the lipid bilayer of the membrane. Additionally, water can pass through the membrane via specialized channels called aquaporins, though its small size would otherwise allow some diffusion.