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Energy is only necessary for diffusion if the particles are being moved across the membrane against the gradient. ATP is necessary for this active transport as particles are moved from low concentrations to higher concentrations across the membrane.
This is because passive transport, which does not use energy, only works to move particles down their concentration gradient.
Ex. Such active transport is used in neuron cells to have a different charge inside and outside of the cell so that it can relay electric signals.
What else can I help you with?
How do lipid or oil get through plasma cell membrane?
Lipids and oils are able to move through the plasma cell membrane via simple diffusion. The lipid bilayer structure of the membrane allows for the passive and selective movement of non-polar molecules, such as lipids and oils, without the need for energy input.
What Substances that can freely dissolve through the plasma membrane are made of?
Substances that can freely dissolve through the plasma membrane are generally small and nonpolar molecules, such as oxygen, carbon dioxide, and ethanol. These molecules are able to pass through the lipid bilayer of the plasma membrane without requiring a specific transport protein.
What is the function of the carbohydrates that stick out if the plasma membrane?
The carbohydrates help identify chemical signals and define the characteristics of the cell.
How does nutrients enter a cell?
The plasma membrane.
Does passive or active processes account for the movement of fats and respiratory gases through the plasma membrane?
Passive processes, such as simple diffusion and facilitated diffusion, account for the movement of fats and respiratory gases through the plasma membrane. These processes do not require energy input and rely on the concentration gradient to drive the movement of molecules across the membrane.
How do lipid or oil get through plasma cell membrane?
Lipids and oils are able to move through the plasma cell membrane via simple diffusion. The lipid bilayer structure of the membrane allows for the passive and selective movement of non-polar molecules, such as lipids and oils, without the need for energy input.
Can large polar molecules pass through the plasma membrane?
No, large polar molecules cannot pass through the plasma membrane.
How do small polar molecules pass through the plasma membrane?
Small polar molecules can pass through the plasma membrane through a process called simple diffusion, where they move from an area of high concentration to low concentration without the need for energy or a transport protein.
What do you call the movement through the cell membrane?
permeation through the plasma membrane perhaps?
What does not freely diffuse through the plasma membrane?
glucose
Where is glucose taken into cell?
through the plasma membrane
What Substances that can freely dissolve through the plasma membrane are made of?
Substances that can freely dissolve through the plasma membrane are generally small and nonpolar molecules, such as oxygen, carbon dioxide, and ethanol. These molecules are able to pass through the lipid bilayer of the plasma membrane without requiring a specific transport protein.
What is the function of the carbohydrates that stick out if the plasma membrane?
The carbohydrates help identify chemical signals and define the characteristics of the cell.
How does nutrients enter a cell?
The plasma membrane.
Does passive or active processes account for the movement of fats and respiratory gases through the plasma membrane?
Passive processes, such as simple diffusion and facilitated diffusion, account for the movement of fats and respiratory gases through the plasma membrane. These processes do not require energy input and rely on the concentration gradient to drive the movement of molecules across the membrane.
What are the specializations of the plasma membrane?
The plasma membrane specializes in controlling the movement of substances in and out of the cell through selective permeability. It also plays a role in cell communication and recognition through protein receptors embedded in the membrane. Additionally, the plasma membrane helps maintain the cell's shape and structure.
Is plasma membrane premeable?
The plasma membrane is selectively permeable; it allows some substances to pass through but prevents the passage of other substances
