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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.
What is pore protein?
integral protein that embedded to the plasma membrane. Allow small substances to cross the plasma membrane.
Protein in the plasma membrane not so?
What is not true about protein in the plasma membrane? Glycoproteins contain carbohydrate chains that are oriented toward the inner surface of the membrane
What substance can freely pass through the cell membranes?
Certain steroid hormones, cholesterol for example, can pass through the plasma membrane of the cell. Ions cannot pass through the plasma membrane but requires a channel protein. All cells in our body has phospholipid bilayer plasma membrane.
A researcher made an interesting observation about a protein used to build a cell's plasma membrane The final protein in the plasma membrane was slightly different from the protein made by the ER?
Golgi apparatus.
Transport protein that provides a tubelike opening in the plasma membrane through which particles can diffuse?
Channel Protein.
What substance can pass through a capillary membrane?
plasma protein
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.
What is the role of transport and channel proteins within the fluid mosaic of the plasma membrane?
They allow movement of salts and sugars through the plasma membrane
What is pore protein?
integral protein that embedded to the plasma membrane. Allow small substances to cross the plasma membrane.
Protein in the plasma membrane not so?
What is not true about protein in the plasma membrane? Glycoproteins contain carbohydrate chains that are oriented toward the inner surface of the membrane
Does plasma membrane manufacture protein?
No.
What is the definition of protein gate?
A protein gate is a pathway through a protein molecule on the plasma membrane in which ions and small molecules can diffuse in or out of a cell.
What substance can freely pass through the cell membranes?
Certain steroid hormones, cholesterol for example, can pass through the plasma membrane of the cell. Ions cannot pass through the plasma membrane but requires a channel protein. All cells in our body has phospholipid bilayer plasma membrane.
A researcher made an interesting observation about a protein used to build a cell's plasma membrane The final protein in the plasma membrane was slightly different from the protein made by the ER?
Golgi apparatus.
Which of the following incorrectly matches the type of cell type of protein and site of the proteins synthesis?
prokaryote, plasma membrane protein, ribosome bound to plasma membrane
What large molecules are unable to cross the plasma membrane?
A process in which some substance are too large to pass through the membrane is endocytosis
