CELL STRUCTURES AND FUNCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a special kind of diffusion
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the movement of water across a permeable cell membrane
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a passive transport mechanism
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an active transport mechanism
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Detailed explanation-1: -Osmosis is a form of passive transport when water molecules move from low solute concentration(high water concentration) to high solute or low water concentration across a membrane that is not permeable to the solute. There is a form of passive transport called facilitated diffusion.
Detailed explanation-2: -Transportation through plasma membrane occurs by simple diffusion, osmosis and facilitated diffusion. These are passive transport mechanisms.
Detailed explanation-3: -Diffusion is a passive process which means it does not require energy. Small particles diffuse faster than large ones. Eg substances like oxygen, carbon dioxide and glucose move in and out of cells by diffusion.
Detailed explanation-4: -Osmosis is passive diffusion. In osmosis, water moves from high concentration to low concentration through a semi-permeable membrane. Osmosis does not require energy, i.e. ATP for the movement. Passive diffusion is the movement of solute from high concentration to low concentration.
Detailed explanation-5: -The three main kinds of passive transport are diffusion, osmosis, and facilitated diffusion.