Passive transport and active transport are two types of cellular transport mechanisms.
Passive transport refers to the movement of molecules or ions across a cell membrane without the need for energy input from the cell. This type of transport occurs down a concentration gradient, from an area of higher concentration to an area of lower concentration, until an equilibrium is reached. Passive transport includes diffusion, osmosis, and facilitated diffusion.
On the other hand, active transport requires the input of energy from the cell in order to move molecules or ions across a cell membrane, against the concentration gradient, from an area of lower concentration to an area of higher concentration. This type of transport allows cells to accumulate molecules or ions in higher concentrations than the surrounding environment. Active transport is carried out by protein pumps, which use ATP as an energy source.
In summary, the main difference between passive and active transport is the source of energy used to move molecules or ions across a cell membrane, and the direction of movement. Passive transport does not require energy and moves down the concentration gradient, while active transport requires energy and moves against the concentration gradient.
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Answer:
Passive transport and active transport are two types of cellular transport mechanisms.
Passive transport refers to the movement of molecules or ions across a cell membrane without the need for energy input from the cell. This type of transport occurs down a concentration gradient, from an area of higher concentration to an area of lower concentration, until an equilibrium is reached. Passive transport includes diffusion, osmosis, and facilitated diffusion.
On the other hand, active transport requires the input of energy from the cell in order to move molecules or ions across a cell membrane, against the concentration gradient, from an area of lower concentration to an area of higher concentration. This type of transport allows cells to accumulate molecules or ions in higher concentrations than the surrounding environment. Active transport is carried out by protein pumps, which use ATP as an energy source.
In summary, the main difference between passive and active transport is the source of energy used to move molecules or ions across a cell membrane, and the direction of movement. Passive transport does not require energy and moves down the concentration gradient, while active transport requires energy and moves against the concentration gradient.
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