Osmosis In Cells
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The document describes the effects of placing a cell in concentrated and diluted solutions. When placed in a concentrated solution, water leaves the cell causing it to plasmolyse, crenate, become soft and flaccid, and decrease in mass. When placed in a diluted solution, water enters the cell causing it to become turgid, swell up, and increase in mass, and if too diluted the cell will break as it takes on too much water.
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![[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Cell in concen-trated solution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Cell in diluted solution Plant cell Animal cell](https://image.slidesharecdn.com/osmosisincells-090910230928-phpapp02/85/Osmosis-In-Cells-1-320.jpg)
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Osmosis is the movement of water molecules through a partially permeable membrane from an area of higher water concentration to lower water concentration.
Plants rely on osmosis for water movement. When water enters a plant cell through the cell membrane and cell wall, the cell becomes turgid and rigid as the vacuole fills with water. If water leaves the cell, the cell becomes flaccid as the vacuole shrinks.
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All living things are made up of cells, which are the basic units of structure and function. Robert Hooke discovered cells in 1665 using a microscope. The cell theory states that cells are the fundamental unit of life, new cells arise from existing cells, and all organisms are composed of one or more cells. Cells vary in size, shape, and function depending on their role. The main components of cells are the plasma membrane, nucleus, and cytoplasm. The plasma membrane regulates what enters and exits the cell and maintains its shape.
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Video links:
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AIMS Advanced Biology 2016
By Emma Atman
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IT'S NOT MINE. JUST SHARE IT HERE FOR MY OWN REVISION AND OTHERS.
CREDIT TO : http://smksjtbiology.blogspot.my
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CHAPTER 3 : 2. Hypotonic, Hypertonic and Isotonic Solutions
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3. Transpiration pull is the force that drives the movement of water through the xylem. Water evaporates from the leaves and is replaced via cohesion between water molecules.
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