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What parts of of the membrane help large molecules pass through it?
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∙ 8y ago
Globular proteins.
Sigurd Nolan
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What are the parts of the membrane help large molecules pass through it?
Globular proteins.
Facilitated diffusion moves large molecules through what?
Glucose and polypeptides.
Why would the cells need to go through exocytosis?
Many cells in the body use exocytosis to release enzymes or other proteins that act on other parts of the body or to release molecules that helps cells to communicate with each other.
How do Integral membrane proteins function?
The location of their polar and non-polar amino acids. I'll buy that. But there's more. the membranes are hydrophyllic (polar) on the outside and hydrophobic (non-polar) on the inside. Proteins that pass through the membrane are stabilized by the membrane, and also stabilize the membrane in return. Based on the sequence of the amino acids, there are polar / hydrophyllic parts of the protein and nonpolar / hydrophobic parts. They interact with the membrane like little magnets to hold everything in place...
What molecules are on the outer surface of the plasma membrane?
The outside surface of the plasma membrane is made of a layer of molecules called phospholipids, which have hydrophobic and a hydrophilic parts. The hydrophilic parts are on the outside surface, attracted by the water and other hydrophilic molecules outside the cell. There are also proteins of various kinds attached to and embedded in this outer layer.
What are the parts of the membrane help large molecules pass through it?
Globular proteins.
Facilitated diffusion moves large molecules through what?
Glucose and polypeptides.
Why would the cells need to go through exocytosis?
Many cells in the body use exocytosis to release enzymes or other proteins that act on other parts of the body or to release molecules that helps cells to communicate with each other.
What are the two major types of active transports?
The two major parts of active transport are endocytosis and exocytosis. Endocytosis is taking material into the cell by means of infoldings in the cell membrane. There are two types of endocytosis: phagocytosis (large molecules) and pinocytosis (small molecules). Exocytosis is the release of materials from a cell. The vacuole membrane and the cell membrane fuse together and the contents are released.
What are the two types of active transport?
The two major parts of active transport are endocytosis and exocytosis. Endocytosis is taking material into the cell by means of infoldings in the cell membrane. There are two types of endocytosis: phagocytosis (large molecules) and pinocytosis (small molecules). Exocytosis is the release of materials from a cell. The vacuole membrane and the cell membrane fuse together and the contents are released.
How do Integral membrane proteins function?
The location of their polar and non-polar amino acids. I'll buy that. But there's more. the membranes are hydrophyllic (polar) on the outside and hydrophobic (non-polar) on the inside. Proteins that pass through the membrane are stabilized by the membrane, and also stabilize the membrane in return. Based on the sequence of the amino acids, there are polar / hydrophyllic parts of the protein and nonpolar / hydrophobic parts. They interact with the membrane like little magnets to hold everything in place...
What can you conclude about the cell membrane structure if liquid soluble molecules move across the membrane?
It can be concluded that if the liquid soluble molecules move more readily across the membrane then the membrane must be made of lipids. When two parts are made of similar material then they will be more likely to allow other particles like them to pass.
What molecules are on the outer surface of the plasma membrane?
The outside surface of the plasma membrane is made of a layer of molecules called phospholipids, which have hydrophobic and a hydrophilic parts. The hydrophilic parts are on the outside surface, attracted by the water and other hydrophilic molecules outside the cell. There are also proteins of various kinds attached to and embedded in this outer layer.
Which parts of cell membrane would help a large protein molecule enter the cell?
Globular Proteins
What is the breakdown of large molecules into smaller ones be absorbed by the cells called?
Digestion is the breakdown of large food molecules into smaller molecules. The digested molecules are then absorbed into the bloodstream to be transported to the different parts of the body.
What regulates which substances enter and leave a cell?
The plasma membrane. Carrier proteins and ion channels are parts of the plasma membrane, and aid in diffusion across concentration gradients, as most things don't freely move from one end of the cell membrane to the other. The Sodium-Potassium pump is a major ion channel in the plasma membrane, and regulates the intake of potassium and export of sodium (3 molecules sodium out, 2 molecules potassium in.)
How does the cell membrane acts as the gatekeeper for the cell?
The cell membrane (also called the plasma membrane or plasmalemma) is the biological membrane separating the interior of a cell from the outside environment.
