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No, carbon dioxide does not need a transport protein to cross the cell membrane. It can pass through a membrane by diffusion.
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∙ 9y ago
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∙ 13y agoYes, the cell membrane is highly hydrophobic on the inside, water is hydrophilic by definition, so it requires transport protein to cross the cell membrane
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∙ 12y agoIt crosses through the cell membrane by simple diffusion, or dialysis. It's a small enough molecule to go through the cell membrane.
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∙ 12y agopassive transport (diffusion)
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∙ 13y agoyes, most gases do (ie: oxygen)
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∙ 11y agoi love weiner
Anonymous
By the osmosis
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Why can co2 and o2 cross the phospholipid bilayer without help from proteins?
O2 and CO2 are both nonpolar molecules, therefore they can easily pass through the hydrophobic interior of a membrane.
Which particles-starch or Lugol's-were able to cross the model cell membrane?
The particles that were able to cross the model cell membrane was the Lugol's solution.
What is it when ions are in a low concentration outside a cell and they slowly cross the membrane into the cell?
the answer is the membrane are probably broken down
What substance will diffuse through a membrane?
The three substances that can diffuse through a cell membrane are CO2, O2, AND H2O.
What allows water to cross the permeable membrane of an animal cell?
plasma membrane allows water to enter animal cell
Why can co2 and o2 cross the phospholipid bilayer without help from proteins?
O2 and CO2 are both nonpolar molecules, therefore they can easily pass through the hydrophobic interior of a membrane.
What Lipid do in cell membrane?
molecules such as: CO2, O2, etc
What ions are positively charged and can cross back and forth across neuron and cell membrane?
There are two ions that can cross the cell membrane. The positively charged sodium and potassium ions can cross back and forth across the neuron cell membrane.
How does nutrients cross plasma membrane?
Things like oxygen, CO2 and lipids cross the membrane with simple diffusion. Water can cross the membrane with osmosis when the water moves through a channel protein in the plasma membrane. Glucose, potassium, sodium etc. moves through a carrier protein in the membrane with the process of active movement. In the process of active movement energy is needed and it is given by the glucose or ATP from the cell.
Which particles-starch or Lugol's-were able to cross the model cell membrane?
The particles that were able to cross the model cell membrane was the Lugol's solution.
What depends on a molecule that can cross the plasma membrane?
The Gonhiqule depends on a molecule and cross the plasma membrane in an animal cell, but is a different story for the plant cell because of the cell wall.
What does the plant cell membrane let through?
Water, oxygen, co2
Whats the nuclear membrane?
# The nuclear membrane is a thin membrane covering an animal cell. It holds in the cytoplasm, which in turn contains the organelles and nucleus of the cell. The cell membrane also allows the exchange of nutrients and oxygen/CO2.
What kinda ions are positively charged and can cross back and forth across the neuron cell membrane?
There are two ions that can cross the cell membrane. The positively charged sodium and potassium ions can cross back and forth across the neuron cell membrane.
What is cell membrane permeability?
It is the ability of the membrane to allow ions and/or particles to cross.
What is it when ions are in a low concentration outside a cell and they slowly cross the membrane into the cell?
the answer is the membrane are probably broken down
What receptor has a ligand that can cross the cell membrane that binds?
Intracellular
