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If the concentrationof molecules on both sides of a membrane is the same the molecules will?
When the concentration of molecules on both sides of a semi permeable membrane are the same, there is no concentration gradient. Therefore, the system is at a state of equilibrium and the molecules remain static
What conditions are necessary for diffusion to take place?
The conditions necessary for diffusion is firstly a semi permeable membrane, and a concentration gradient for the movement of molecules from higher concentration to lower concentration. The size of the molecules should be small enough to pass easily through the membrane.
How are active transport and facilitated diffusion different and how are they similar?
Active transport requires energy to move molecules against their concentration gradient, while facilitated diffusion does not require energy and moves molecules down their concentration gradient with the help of carrier proteins. Both processes involve the movement of molecules across a cell membrane but in opposite directions in terms of energy requirement.
How does active transport move things?
The active transport is carried out with the help of carrier proteins and in several cases these carriers behave like enzymes. The action of such enzymes is a bit different as the solute is transported unchanged to the other side of the membrane.
What happens when sucrose is taken up by active transport?
Outside the cell is high concentration of hydrogen ions and low concentration of sucrose. Inside, is the opposite, low concentration of hydrogen ions, and high concentrations of sucrose. Cells use ATP to pump a hydrogen ion across the cell membrane, against the concentration gradient, and when the hydrogen ion goes to re-enter, it goes through a Sucrose-proton cotransporter. This means that the hydrogen ion (proton) take a sucrose molecule with it when it goes though the membrane.
The net direction that an ion or molecule moves is?
determined by the concentration gradient and electrical gradient across the membrane. If the net movement of ions or molecules is down their concentration gradient and towards the opposite electrical charge, they will move across the membrane.
What is a different concentration between solutions on opposite sides of a semipermeable membrane called?
The difference in concentration between solutions on opposite sides of a semipermeable membrane is called a concentration gradient. This gradient drives the movement of molecules through the membrane, typically from an area of higher concentration to an area of lower concentration, in a process known as diffusion. If the movement occurs in response to this gradient, it can influence various biological and chemical processes.
How does a cell maintain differences in concentration of certain ions on either side of the plasma membrane?
Cells maintain unequal concentrations of ions on opposite sides of a cell membrane through active transport.
Did water diffused into or out of the dialysis membrane?
Water typically diffuses through the dialysis membrane depending on the concentration gradient. If the concentration of solutes is higher on one side of the membrane, water will move out of that side to the side with lower solute concentration, a process known as osmosis. Conversely, if the solute concentration is higher on the opposite side, water will diffuse into that side. Thus, the direction of water movement through the dialysis membrane is influenced by the relative solute concentrations on either side.
If the concentrationof molecules on both sides of a membrane is the same the molecules will?
When the concentration of molecules on both sides of a semi permeable membrane are the same, there is no concentration gradient. Therefore, the system is at a state of equilibrium and the molecules remain static
The actual transport of protons by the proton pump is mediated by a transmembrane protein which undergoes a change in its?
conformation during the transport process. This conformation change allows the protein to alternately bind and release protons on opposite sides of the membrane, resulting in the movement of protons across the membrane against their concentration gradient.
Membrane proteins called pumps use energy to move hydrogen ions to one side of the membrane. Which term describes the difference between the numbers of hydrogen ions on opposite sides of the membrane?
The term that describes the difference in the number of hydrogen ions on opposite sides of the membrane is "proton gradient." This gradient is a form of electrochemical gradient that results from the active transport of hydrogen ions (protons) by pumps, creating a difference in concentration and charge across the membrane. This gradient is essential for various cellular processes, including ATP production through chemiosmosis.
What conditions are necessary for diffusion to take place?
The conditions necessary for diffusion is firstly a semi permeable membrane, and a concentration gradient for the movement of molecules from higher concentration to lower concentration. The size of the molecules should be small enough to pass easily through the membrane.
Why does water generally move in the opposite direction of dissolved substances?
Diffusion is the process of a substance moving from an area of a higher concentration to a lower concentration. In this scenario the dissolved substance is the higher concentration and the water would go to an area with the lower concentration.
What is the difference between symport and antiport?
Symport is a type of membrane transport where two different molecules are transported in the same direction across a membrane, while antiport is a type of membrane transport where two different molecules are transported in opposite directions across a membrane. In symport, the molecules move in the same direction to maintain equilibrium, whereas in antiport, the molecules move in opposite directions to create a gradient.
What is a concentration gradient?
It is the difference in concentration (molecules of a solute per volume of solution) between two locations. Because of the motion of molecules, they are said to diffuse (move, spread) from an area of greater concentration to an area of lesser concentration. Some molecules are always moving in the opposite direction, but the overall trend is "down" the gradient until equilibrium is established between the two regions. And, generally, the larger the gradient or difference, the faster the rate of the diffusion.
Active transport counters the process of diffusion?
Yes, active transport is a process in which cells use energy to move molecules against their concentration gradient, whereas diffusion is a passive process where molecules move from an area of high concentration to an area of low concentration. Active transport allows cells to transport molecules against their concentration gradient, which is opposite to the direction of diffusion.
