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Active transport is when proteins move substances into the cell while expending energy. Facilitated diffusion is the movement of chemicals through a protein into a cell.

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11y ago

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Why is facilitated transport not common in bacteria?

Facilitated transport is not common in bacteria because they typically rely on simple diffusion or active transport mechanisms to move molecules across their cell membranes. Bacteria have evolved to efficiently transport nutrients and other molecules through these methods, making facilitated transport less necessary for their survival and growth.


What method of transport is required when molecules must be moved against the concentration gradient?

There are multiple ways for cells to transport things across a difference in concentration. The most common process is diffusion, which is the movement from high concentration to low. Osmosis is the most popular example of this. Facilitated Diffusion is basically diffusion with the use of proteins that are specified for certain molecules. Active Transport is the method by which molecules are transported from low concentration to high concentration.


What do processes of active transport and facilitated transport have in common?

I'm not exactly sure... but both move from low concentration areas to high concentration areas. So...I'm im guessing they both diffuse into a membrane. Don't think I'm smart..I just have this for homework!!! =) hope this helped!!!!!!!!!!!!! You are slightly right. Both move from low concentrations to high concentrations. Active Transport however requires energy as ATP whereas diffusion is a passive process. Hope this helped :)


What is a characteristic that diffusion and active transport have in common and both process?

Both involve the transport of materials across the cell membrane. Active transport goes against the concentration gradient and requires ATP. Diffusion goes with the concentration gradient, or from high to low concentration, and does not require ATP. ATP is the standard unit of energy in cells.


What is the differece between passive and active transport?

Active transport is the movement of molecules across a membrane requiring energy to be expanded by the cell. ACTIVE TRANSPORT REQUIRES ENERGY. Passive transport is diffusion across a membrane requiring only random motion of molecules with no energy expanded by the cell. PASSIVE TRANSPORT REQUIRES NO ENERGY.


What does active transport and passive transport have in common?

nothing


What is the function of passive transport?

Passive transport is a biological process that allows molecules to move across a cell membrane without the use of energy. It occurs down the concentration gradient, from an area of high concentration to an area of low concentration. Common types of passive transport include simple diffusion, facilitated diffusion, and osmosis.


What does a passive transport and an active transport have in common?

Movement of particles .


What is the most common form of passive transport?

The most common form of passive transport is simple diffusion, where molecules move from an area of higher concentration to an area of lower concentration without the use of energy.


What does osmosis and diffusion have in comin?

They are both a form of passive transport. By the way it is spelt "common"


What is the most common type of active transport?

Sodium pump


How do small molecules pass through the cell membrane?

There are three types of transport for molecules across the cell membrane. 1 - Diffusion - Molecules move from an area of high concentration to an area of low concentration 2 - Osmosis - same idea as diffusion, but refers to the movement of WATER across a selectively permeable membrane. How can you change water concentration? Add a solute. If you have 2 250 ml beakers, connected and divided by a selectively permeable membrane, and one beaker contains a salt solution, the salt solution is "hypotonic" (hypo- less, tonic - water) to the water filled beaker. One will see a migration of water into the salt solution beaker. BOTH diffusion and osmosis rely on concentration gradients to perform their jobs. They always want "equilibrium" between both sides of the membrane. 3 - Active transport - Proteins embedded in the cell membrane move large molecules through the cell membrane or AGAINST the concentration gradient. The size one is obvious; If it's really big, it won't permeate the membrane. As for the concentration gradient, this means that it moves a molecule INTO the area with and already HIGHER concentration. If this happens with say... H+ molecules, it creates a potential difference - ie - Voltage across the membrane. Cellular respiration counts on this process to create ATP/Energy for the cell.