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Air is inhaled into the lungs, where oxygen in the air encounters the hemoglobin molecule inside red blood cells, which has the capacity to form a weak attachment to the oxygen, so that oxygen can be easily picked up but also easily released, somewhat in the way that a sponge can pick up or release water. The red blood cells then move through the circulatory system of the body, pumped by the heart, and they arrive in due course in the smallest blood vessels, the capillaries, which have very thin walls. As the red blood cells are giving off oxygen, some of that oxygen will seep out through the thin capillary walls and will then encounter other cells of the body, and can pass through cell membranes by means of osmosis, thus entering the cell.
What else can I help you with?
Can small hydrophobic molecules cross the cell membrane?
Yes, small hydrophobic molecules can cross the cell membrane.
Can nonpolar molecules cross the cell membrane?
Yes, nonpolar molecules can cross the cell membrane through simple diffusion.
How does Oxygen cross cell membrane?
Oxygen and water molecules can penetrate the cell membrane due to small gaps that are created by the lipid molecules. Lipid molecules overlap each other which makes the gaps. The oxygen and water molecules then enter in the gaps. The cell membrane in this case is semi permeable.
Can polar molecules cross the cell membrane?
Yes, polar molecules can cross the cell membrane through facilitated diffusion or active transport.
What is the cell part where oxygen can pass?
All particles trying to get into the cell must get through the cell membrane. The cell membrane is selectively permeable, which means that it can select what goes in and what goes out. The structure of a cell membrane is called a lipid bilayer, which is two layers of phospholipids.
What needs to get into the cell and cross the cell membrane?
Oh things like food, oxygen, ions, and even hormones.
How does oxygen cross the plasma membrane if the concentration of oxygen is lower inside the cell than outside the cell?
Oxygen can cross the plasma membrane through passive diffusion, moving from an area of higher concentration (outside the cell) to an area of lower concentration (inside the cell) until equilibrium is reached. This process does not require energy and occurs due to the difference in oxygen concentrations between the cell's interior and exterior.
How can oxygen cross through the membrane?
Oxygen can cross through the membrane via simple diffusion, utilizing a concentration gradient from an area of higher concentration to an area of lower concentration. This passive transport process does not require energy and allows oxygen molecules to move freely across the cell membrane.
Can small hydrophobic molecules cross the cell membrane?
Yes, small hydrophobic molecules can cross the cell membrane.
Can nonpolar molecules cross the cell membrane?
Yes, nonpolar molecules can cross the cell membrane through simple diffusion.
How does Oxygen cross cell membrane?
Oxygen and water molecules can penetrate the cell membrane due to small gaps that are created by the lipid molecules. Lipid molecules overlap each other which makes the gaps. The oxygen and water molecules then enter in the gaps. The cell membrane in this case is semi permeable.
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.
Can polar molecules cross the cell membrane?
Yes, polar molecules can cross the cell membrane through facilitated diffusion or active transport.
What is the cell part where oxygen can pass?
All particles trying to get into the cell must get through the cell membrane. The cell membrane is selectively permeable, which means that it can select what goes in and what goes out. The structure of a cell membrane is called a lipid bilayer, which is two layers of phospholipids.
How can oxygen cross the membrane?
By the process of simple diffusion.
How does oxygen cross a selectively permeable membrane?
diffusion
How does CO2 cross the cell membrane?
CO2 diffuses through the cell membrane by simple passive diffusion due to its small size and non-polarity. It moves from an area of higher concentration to an area of lower concentration until equilibrium is reached.
