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a bouncy house
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How does pressure operate within a plant cell to help its shape?
imagine a bouncing castle on cellular level. by absorbing water through osmosis a cell keeps its inner pressure at a certain level so that a system of cell "balloons" can support a plant structure. and when a plant dries out, it shrivels and looses its shape
How does DNA determine the shape and size of a cell?
DNA codes for all of the proteins in the cell. Proteins are used as many things within the cell, including signalling molecules which communicate between different parts of the cell, and enzymes, which can adjust the length of structural molecules which keep the cells shape. The shape of the cell is also determined by physical constraints such as outside pressure, the surface area/volume ration, and how fast molecules can diffuse into the centre of the cell.
What do microfilaments provide within a cell?
Anchoring of organelles AND Shape
Explain how pressure operates within a plant cell to help it keep its shape?
The central vacuole in a plant cell stores water and other materials. As it fills up, it becomes more rigid. This helps the plant cell maintain its shape and support the entire plant.
What is the concentration of material in a cell that affects the fluid volume and pressure within the cell?
Tonicity
What might a cell look like if it had no cytoskeleton?
The cytroskeleton holds everything within the cell and would eventually lose the shape as it holds the shape of the cell.
What organelles retain pressure within a plant cell?
Vacuoles
What are the three jobs of the cell wall?
The three jobs are: Maintain the shape of the cell; Protect the cell; Prevent bursting due to turgor pressure.
Is wall pressure opposite to turgor pressure?
No, wall pressure and turgor pressure are not opposite to each other. Wall pressure refers to the force exerted by the cell wall of a plant cell against the protoplast, while turgor pressure is the force exerted by the vacuole against the cell wall. They both work in conjunction to maintain cell shape and provide support to the plant cell.
What does cell wall do in the cell?
The cell wall prevents the cell from exploding! The pressure from the water, within the plant cell is so great that without the wall, it would simply explode.
Why are these organelles?
Organelles are structures within a cell each with its own characteristic shape ,size and function.
How do vacuoles affect the growth of a plant cell?
The central vacuole regulates the "tugor pressure" within the cell of the plant; this is responsible (together with the cell wall) for maintaining the shape and structure of many plants (mainly herbaceous). If the vacuole were removed, punctured or absent there would be no rigidity to the cell. The central vacuole is also assists with osmosis and homeostasis within the cell, damage to the vacuole will result in the cell dying.
