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When a substance wants to enter the cell it binds to what?
When a substance wants to enter a cell it goes through the cell membrane in a process called endocytosis.
What must a substance pass through to enter or leave a cell?
A substance must pass through the cell membrane in order to enter or leave a cell. This process can occur through various methods such as simple diffusion, facilitated diffusion, active transport, or endocytosis/exocytosis. The cell membrane acts as a barrier that selectively allows certain substances to pass through while blocking others.
Would oxygen particles enter a cell through diffusion more likely than fat particles?
Yes, oxygen particles would enter a cell through diffusion more readily than fat particles due to their smaller size and higher solubility in the cell membrane. Fat particles are larger and less likely to pass through the cell membrane via simple diffusion.
How do the small molecules of oxygen and carbon dioxide move through the cell membrane?
Oxygen and carbon dioxide move through the cell membrane via simple diffusion. They pass through the lipid bilayer of the membrane from an area of high concentration to an area of low concentration. This process allows them to enter and exit the cell as needed for cellular respiration and waste removal.
Polysaccharides cross the plasma membrane through diffusion?
Polysaccharides are too large to pass through the plasma membrane by simple diffusion. Instead, they are typically transported into or out of the cell through facilitated diffusion or active transport processes using specific carrier proteins. This allows the cell to regulate the movement of polysaccharides based on its metabolic needs.
When a substance wants to enter the cell it binds to what?
When a substance wants to enter a cell it goes through the cell membrane in a process called endocytosis.
Identify at least five ways by which a substance may enter the cell?
A substance can enter a cell through diffusion, facilitated diffusion, active transport, endocytosis, or passive transport. Each of these processes has different mechanisms for moving substances across the cell membrane.
How does gases enter and leave capillaries?
Simple diffusion.
How are diffusion and facilitated diffusion similar?
Substances enter a cell through the cell membrane
Which substance can enter a cell by diffusion without have to be digested?
water
What must a substance pass through to enter or leave a cell?
A substance must pass through the cell membrane in order to enter or leave a cell. This process can occur through various methods such as simple diffusion, facilitated diffusion, active transport, or endocytosis/exocytosis. The cell membrane acts as a barrier that selectively allows certain substances to pass through while blocking others.
Would oxygen particles enter a cell through diffusion more likely than fat particles?
Yes, oxygen particles would enter a cell through diffusion more readily than fat particles due to their smaller size and higher solubility in the cell membrane. Fat particles are larger and less likely to pass through the cell membrane via simple diffusion.
What substance crosses the cell membrane by simple diffusion?
Non-polar molecules such as oxygen, carbon dioxide, and water can cross the cell membrane by simple diffusion. These molecules can move freely through the lipid bilayer without the need for a transport protein.
What substances would most likely require a protein to facilitate its diffusion across a cell membrane?
Quick answer: glucose Explanation: Any substance that the membrane selects against requires integral proteins to cross the membrane. B/c the lipid bilayer is selectively permeable, not all substances can pass through it by diffusion or osmosis. However, when the cell requires a substance that it's membrane does not easily allow to pass through, it must enter via the proteins in the membrane. They can either be carrier proteins or protein channels depending on the substance. One example of a substance which requires facilitated diffusion is glucose.
How do the small molecules of oxygen and carbon dioxide move through the cell membrane?
Oxygen and carbon dioxide move through the cell membrane via simple diffusion. They pass through the lipid bilayer of the membrane from an area of high concentration to an area of low concentration. This process allows them to enter and exit the cell as needed for cellular respiration and waste removal.
What molecule is most likely to enter a cell by simple diffusion through the lipid bi-layer?
Small, nonpolar molecules like oxygen, carbon dioxide, and water are most likely to enter a cell by simple diffusion through the lipid bilayer due to their ability to directly pass through the hydrophobic interior of the membrane without the need for facilitated transport.
Polysaccharides cross the plasma membrane through diffusion?
Polysaccharides are too large to pass through the plasma membrane by simple diffusion. Instead, they are typically transported into or out of the cell through facilitated diffusion or active transport processes using specific carrier proteins. This allows the cell to regulate the movement of polysaccharides based on its metabolic needs.
