Q:

What is an example of passive transport?

A:

Osmosis is an example of passive transport. Osmosis is the diffusion of water across a membrane from an area of high concentration to an area of low concentration.

Passive transport does not require the input of energy. Materials are always transferred from areas of high concentration to areas of lower concentration. It can be done either by diffusion of small, non-polar molecules through a semi-permeable membrane or by transport through a channel.

Osmosis is very important in biological processes and systems. Water is able to enter cells and tissues by passing through the membrane from an area of higher concentration to an area of lower concentration. If ions are not removed from a cell to maintain even concentrations within and outside the cell, water rushes into the cell through osmosis, causing the cell to burst.

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Related Questions

  • Q:

    What are types of passive transport?

    A:

    There are four different types of passive transport: diffusion, facilitated diffusion, filtration and osmosis. Diffusion is the movement of substances from an area of high concentration to an area with lower concentration. The difference of concentration between these two areas is called concentration gradient.

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  • Q:

    What are the two types of passive transport?

    A:

    The two types of passive transport are diffusion and osmosis. Diffusion is the movement of molecules across a membrane from an area of high concentration to an area of low concentration, occurring with or without the help of membrane proteins. Osmosis is the diffusion of water molecules.

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  • Q:

    How is active transport different from passive transport?

    A:

    Active transport is different from passive transport in that during active transport, molecules move against the concentration gradient, which means they move from a low-concentration area to a high-concentration area. On the other hand, passive transport moves with the concentration gradient.

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  • Q:

    Where does active transport occur?

    A:

    Active transport occurs in the cell membrane. Active transport is when a cell uses energy to transport proteins from one side of the cell membrane to the other side.

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