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What cell may transport a substance if the substance is too large to cross the membrane?
Vescicles
What barrier does active transport get substance past?
the cell membrane
What is carrier-assisted transport?
Carrier-assisted transport is a mechanism in which a carrier molecule assists in the movement of a substance across a biological membrane. The carrier molecule can bind to the substance and facilitate its transport across the membrane. This process is typically passive and does not require energy input from the cell.
What is the difference between facilitated diffusion with the help of a carrier protein and active transport with the help of the transport protein?
Facilitated diffusion is a type of passive transport in which a substance moves across the cell membrane from high to low concentration. In this situation, the substance moves with the concentration gradient, and with the help of carrier molecules, it is able to make it's way across the membrane smoothly and without the expense of energy. Active transport, on the other hand, is the movement of a substance across the cell membrane from low to high concentration, making the transport a bit more difficult and calling for the use of energy. Transport proteins recognize the substance and allow it to cross through the membrane.
What property of the cell membrane enables it to perform active transport?
Embedded in the semi-permeable cell membrane are many different types of carrier proteins or channel proteins. These globular proteins allow the transport of specific substances from the outside of the cell into the cell or vice versa.Specific means each protein can only transport one type of substance across. For example, Protein A can transport Substance X but not Substance Y. Substance Y has to be transported by Protein B which cannot transport Substance X. The specific nature of these globular proteins mean it is easier for these molecules to be transported.
Which substance did not diffused through the membrane?
starch doesnt diffuse through the dialysis membrane.
What substance in the dialysis tubing or jar did not diffuse across the dialysis bag membrane and why?
molecular weight higher than the pore size of the tubing or dialysis bag material doesnt go.
The transport of a substance across the cell membrane against its concentration gradient is called what?
The transport of a substance across the cell membrane against its concentration gradient is called active transport.
What cell may transport a substance if the substance is too large to cross the membrane?
Vescicles
What barrier does active transport get substance past?
the cell membrane
What is used to move a substance through a membrane in active transport?
Electrochemical gradient is used to move substances through a membrane in active transport.
What is the difference between facilitated diffusion with the help of a carrier protein and active transport with the help of a transport transport?
Facilitated diffusion is a type of passive transport in which a substance moves across the cell membrane from high to low concentration. In this situation, the substance moves with the concentration gradient, and with the help of carrier molecules, it is able to make it's way across the membrane smoothly and without the expense of energy. Active transport, on the other hand, is the movement of a substance across the cell membrane from low to high concentration, making the transport a bit more difficult and calling for the use of energy. Transport proteins recognize the substance and allow it to cross through the membrane.
What is carrier-assisted transport?
Carrier-assisted transport is a mechanism in which a carrier molecule assists in the movement of a substance across a biological membrane. The carrier molecule can bind to the substance and facilitate its transport across the membrane. This process is typically passive and does not require energy input from the cell.
What is the difference between facilitated diffusion with the help of carrier protein and active transport with the help of a transport protein?
Facilitated diffusion is a type of passive transport in which a substance moves across the cell membrane from high to low concentration. In this situation, the substance moves with the concentration gradient, and with the help of carrier molecules, it is able to make it's way across the membrane smoothly and without the expense of energy. Active transport, on the other hand, is the movement of a substance across the cell membrane from low to high concentration, making the transport a bit more difficult and calling for the use of energy. Transport proteins recognize the substance and allow it to cross through the membrane.
What is the difference between facilitated diffusion with the help of a carrier protein and active transport with the help of a transport protein?
Facilitated diffusion is a type of passive transport in which a substance moves across the cell membrane from high to low concentration. In this situation, the substance moves with the concentration gradient, and with the help of carrier molecules, it is able to make it's way across the membrane smoothly and without the expense of energy. Active transport, on the other hand, is the movement of a substance across the cell membrane from low to high concentration, making the transport a bit more difficult and calling for the use of energy. Transport proteins recognize the substance and allow it to cross through the membrane.
What is the difference between facilitated diffusion with the help of a carrier protein and active transport with the help of the transport protein?
Facilitated diffusion is a type of passive transport in which a substance moves across the cell membrane from high to low concentration. In this situation, the substance moves with the concentration gradient, and with the help of carrier molecules, it is able to make it's way across the membrane smoothly and without the expense of energy. Active transport, on the other hand, is the movement of a substance across the cell membrane from low to high concentration, making the transport a bit more difficult and calling for the use of energy. Transport proteins recognize the substance and allow it to cross through the membrane.
How do carrier proteins transport substance across the membrane?
The carrier protein changes shape , shielding the molecule from the interior of the membrane.
