What is the difference between active transport and facilitated diffusion?

Facilitated diffusion is the movement of the substance from high to low concentration. It does not require energy.On the other hand it involves protein channels or carriers.

Active transport is when energy or ATP used to transport substance against their concentration gradient. Example is the movement of ion from soil into the root hair cells.

Active Transport requires energy (ATP). Diffusion does not

Active transport requires energy ATP in order to take place as you are going against the concentration gradient.

Facilitated diffusion is still passive however it required protein channels across the phospholipid membrane to take place.

In active transport, the movement of particles goes against the concentration gradient, so from an area of low concentration to high concentration. Active transport also requires energy to drive the process.

Facilitated diffusion is a passive process, similar to regular diffusion where molecules move from an area of high concentration to an area of low concentration. However the difference is that facilitated diffusion requires the aid of a carrier or channel protein to help move the molecules across a membrane. The molecule will be specific to the protein involved and usually polar or large.

Facilitated diffusion follows a concentration gradient (from high to low) whereas active transport is the opposite - moving molecules from low concentration to high concentration. Both involve a intermediary carrier like a protein channel or a carrier, but active transport requires the use of ATP to go against the concentration gradient, and facilitated diffusion is passive, merely helped by the carrier across a membrane to follow the gradient.

Hello, active transport is an 'active' process therefore the use of Adenosine triphosphate (ATP) is required. On the other hand, facilitated diffusion is a 'passive' process thus it does not require ATP.

Hello,

Good question.

Active transport is the movement of substances from low to high concentration, therefore it requires energy in the form of ATP. So, we call active transport an "active process".

Facilitated diffusion is the movement of substances from a high to low concentration, with the use of carrier or protein channels, as it's going down the concentration gradient it does not require energy. Therefore, facilitated diffusion is a "passive process".

Facilitated diffusion is a passive process that allows the movement of molecules across a cell membrane, down their concentration gradient. 

This means that substances move from an area of higher concentration to an area of lower concentration. 

The main components in this process are specialised proteins carriers. These proteins create channels through which specific molecules can move across the membrane. No energy input is required as the movement occurs passively due to the concentration gradient.

An example of facilitated diffusion is in the movement of glucose, an essential energy source for cells. Specialised proteins transporters facilitate the movement of glucose down its concentration gradient. As blood glucose levels rise, these transporters allow glucose to enter cells, ensuring a steady supply for cellular energy production.

In contrast, active transport is an energy-demanding process that moves molecules against their concentration gradient, from an area of lower concentration to an area of higher concentration. 

This process required the use of energy, from adenosine triphosphate (ATP). 

The main components in active transport are proteins pumps. These pumps actively transport ions or molecules across the membrane, maintaining concentration gradients that are essential for various cellular functions.

An example of active transport is the sodium-potassium pump. This pump actively transports three sodium ions out of the cell and two potassium ions into the cell against their respective concentration gradients. This process is crucial for maintaining the electrochemical gradient, cell volume, and resting membrane potential of cells.

The key differences between the two transport processes are:

1. Energy Requirement:

  - Facilitated diffusion is a passive process, requiring no energy input.

  - Active transport is an energy-intensive process, using ATP for the movement of molecules against their concentration gradient.

2. Movement Direction:

  - Facilitated diffusion occurs down the concentration gradient, from high to low concentration.

  - Active transport moves substances against the concentration gradient, from low to high concentration.

3. Protein Involvement:

  - Facilitated diffusion relies on transporter proteins or channels.

  - Active transport involves pump proteins that actively move molecules across the membrane.

4. Saturation:

  - Facilitated diffusion may reach saturation when all available transporters are in use.

  - Active transport can continue as long as there is an energy source, and saturation is less likely.

Active transport involves ATP, as molecules are being moved from a low concentration, to a high concentration, against a concentration gradient. Facilitated diffusion does not require ATP, as molecules are naturally diffusing from a high to low concentration, down a concentration gradient. However, both involve molecules binding to carrier proteins, and travelling across a semi-permeable membrane.

The main differences between active transport and facilitated diffusion are the direction of the transported material in relation to the concentration gradient and the use of energy. In facilitated diffusion, materials are transported from a region of higher concentration to a region of lower concentration (through a concentration gradient) without the use of energy. In contrast, in active transport, active use of energy (e.g. in the form of ATP) is used to actively move materials from a region of lower concentration to a region of higher concentration (against the concentration gradient).

Active Transport is a cellular process that uses energy to move molecules and ions across membranes from an area of high concentration to low concentration, against the concentration gradient. Facilitated diffusion does not require energy (ATP). Both processes involve carrier proteins. A molecule will attach to the carrier protein, causing a conformational change in the protein and releasing the molecule on the other side.

Active transport requires energy and moves the substances from low concentration to high concentration. But facilitated diffusion is passive transport which requires no energy and transport substances from high concentration to low concentration

Active transport requires ATP whereas facilitated diffusion does not as it is passive.

Active transport allows the movement of water soluble molecules and ions against the concentration gradient, whereas facilitated diffusion allows for movement down a concentration gradient.

Facilitated diffusion can occur through both channel and carrier proteins whereas active transport can occur only through carrier proteins.

Active transport involves the movement of molecules against the concentration gradient, and uses ATP. Facilitated diffusion is a passive process, meaning it doesn't use ATP. As opposed to simple diffusion, facilitated diffusion uses membrane proteins, like a carrier or channel.

Facilitated diffusion is down the concentration gradient from higher concentration to lower concentration and does not require energy, whereas active transport is from lower concentration to higher concentration against the concentration gradient and requires energy.