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What else can I help you with?
What happens when concentration gradient 0?
When the concentration gradient is 0, no flow is allowed to go through the cell wall. To get motion through a membrane, the concentration gradient must be higher than 0.
How does the hydrogen ion pump store energy in a new place?
once hydrogen ions are outside the membrane they are allowed to flow back in. this flow is changed to energy that is stored in the bonds of new molecules.
How do diffusion and osmosis related to each other?
Diffusion and osmosis are both passive transport processes that involve the movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis specifically refers to the movement of water molecules across a selectively permeable membrane, while diffusion can involve the movement of any type of molecule. Both processes are driven by the concentration gradient and do not require energy input from the cell.
When 2 solutions that differ in solute concentration are placed on either side of a permeable membrane and osmosis is allowed to take place the will exhibit a net movement to the side with lower solut?
e concentration. This is because water molecules will move from an area of higher concentration to an area of lower concentration in an attempt to equalize the solute concentrations on both sides of the membrane.
What is Uniport?
Uniport is a type of protein transporter found in cell membranes that facilitates the transport of a single type of molecule across the membrane. It is a passive transport process that relies on the concentration gradient of the molecule being transported.
What happens to the resting membrane potential if ATP was depleted in a nerve cell?
All active transportation of ions would stop and ions would be allowed to run down their concentration gradients, eventually reaching equilibrium. At this stage there would be no more electrochemical potential difference across the cell membrane.
When two aqueous solution that differ in solute concentration are placed on either side of a seipermeable membrane and osmosic is allowed to take place th the water will?
The water will move towards the higher solute concentration until both sides are isotonic.
How do you explain the entrance and exit of materials in a cell?
Materials can enter and exit cells in multiple ways. There is the process of osmosis, where water particles move through the partially permeable membrane in the cell wall to a higher concentration gradient - this does not require energy. There is also diffusion, where particles small enough to fit through the partially permeable membrane move down a concentration gradient - this also does not require energy. And then there is active transport, where the cell wall can actually move particles into the concentration gradient they would not naturally move to, and this does require energy. Hope I helped :)
What organelle moves substances across the cell in one direction?
The plasma membrane surrounding animal cells is where the exchange of substances inside and outside of cells takes place. Some substances need to move from the extracellular fluid outside cells to the inside of the cell, and some substances need to move from the inside of the cell to the extracellular fluid.Some of the proteins that are stuck in the plasma membrane help to form openings (channels) in the membrane. Through these channels, some substances such as hormones or ions are allowed to pass through. They either are "recognized" by a receptor (a protein molecule) within the cell membrane, or they attach to a carrier molecule, which is allowed through the channels. Because the plasma membrane is choosy about what substances can pass through it, it is said to be selectively permeable.
How do faciliated diffusion and active transport differ?
In active transport, the molecules are carried against the force of diffusion. This is the opposite of facilitated transport. Also in active transport, energy in the form of ATP is required, since the molecules move against the normal flow. Note that energy is not needed in facilitated transport. Bard, Susan, Mary Alice Jost. Multimediated Lectures in Biology. Seventh Edition. Howard Community College, MD. 2003. ---------------------------------------------------------------------- *Active transport: Transport of molecules AGAINST the concentration gradient with the use of a PROTEIN CARRIER. This uses ATP. Facilitated transport: Moving of molecules through a semi permeable membrane witht he use of the cell's "facility's" AKA Protein carriers or Channels. *Gowda, Vishal. 10th Grade AP Biology Student. How about that? 2008 son!
What do you call the membrane that allowed the movement of molecule?
osmosis
What is the concentration of diethylene glycol allowed in toothpastes?
zero
