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Are symporters active or passive in their transport mechanism?
Symporters are active transport mechanisms that move molecules across a cell membrane using energy from ATP or an electrochemical gradient.
Is transport through aquaporin passive or active?
Transport through aquaporins is passive, as water molecules move across the cell membrane through these channels driven by osmotic gradients without the need for energy expenditure.
What is it called when transport proteins to help large molecules like glucose across the cell membrane?
Facilitated diffusion is the process by which transport proteins help large molecules like glucose cross the cell membrane. These proteins create a channel or carrier mechanism that allows the molecule to move across the membrane along its concentration gradient.
Why is the membrane impermeable to protons?
The membrane is impermeable to protons because it contains specific proteins called proton pumps that actively transport protons across the membrane. This selective transport mechanism helps maintain the balance of protons inside and outside the cell, which is crucial for various cellular processes.
To prevent osmotic flow of water across the membrane pressure sould be applied to which solution?
Pressure should be applied to the hypertonic solution to prevent osmotic flow of water across the membrane. This helps to balance the concentration gradient and prevent excessive water movement into the hypertonic solution.
What is the mechanism for absorption of water across the intestinal epithelium?
Osmotic gradients control the inflow and outflow of water across any membrane, whether epithelium or phospholipid barrier.
Is it true that the cell mechanism of active transport involves the transport of insoluble chemicals across the membrane with protein acting as the carrier?
yes
The cell mechanism of active transport involves the transport of insoluble chemicals across the membrane with protein acting as the carrier. true or false?
true
The transport mechanism for a neurotransmitter across the synaptic cleft is called?
The transport mechanism for a neurotransmitter across the synaptic cleft is called exocytosis. During exocytosis, neurotransmitter-filled vesicles fuse with the presynaptic membrane, releasing the neurotransmitter into the synaptic cleft where it can then bind to receptors on the postsynaptic 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.
The cell mechanism of active transport involves the transport of insoluble chemicals across the membrane with protein acting as the carrier?
Active transport is a cell mechanism that requires energy in the form of ATP to move molecules against their concentration gradient, from an area of low concentration to high concentration. Carrier proteins embedded in the cell membrane bind to the specific molecules and use energy to move them across the membrane.
Are symporters active or passive in their transport mechanism?
Symporters are active transport mechanisms that move molecules across a cell membrane using energy from ATP or an electrochemical gradient.
Is transport through aquaporin passive or active?
Transport through aquaporins is passive, as water molecules move across the cell membrane through these channels driven by osmotic gradients without the need for energy expenditure.
What is it called when transport proteins to help large molecules like glucose across the cell membrane?
Facilitated diffusion is the process by which transport proteins help large molecules like glucose cross the cell membrane. These proteins create a channel or carrier mechanism that allows the molecule to move across the membrane along its concentration gradient.
Why is the membrane impermeable to protons?
The membrane is impermeable to protons because it contains specific proteins called proton pumps that actively transport protons across the membrane. This selective transport mechanism helps maintain the balance of protons inside and outside the cell, which is crucial for various cellular processes.
To prevent osmotic flow of water across the membrane pressure sould be applied to which solution?
Pressure should be applied to the hypertonic solution to prevent osmotic flow of water across the membrane. This helps to balance the concentration gradient and prevent excessive water movement into the hypertonic solution.
Why tonicity is important?
because it refers to the effect of the solutions osmotic pressure has on water movement across the cell membrane of cells with in the solution. because it refers to the effect of the solutions osmotic pressure has on water movement across the cell membrane of cells with in the solution.
