What is the definition of diffusion in cells?
Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. If a molecule can pass freely through a cell membrane, it will cross the membrane by diffusion (Figure below).
What is diffusion in science simple definition?
Diffusion is defined as the movement of individual molecules of a substance through a semipermeable barrier from an area of higher concentration to an area of lower concentration [34].
What is diffusion short answer?
Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration . Diffusion occurs in liquids and gases when their particles collide randomly and spread out. Diffusion is an important process for living things – it is how substances move in and out of cells.
What is diffusion and where in a cell does it happen?
Diffusion, in biochemistry, refers to one of many processes by which molecules can move into and out of cells through the plasma membrane, or cross membranes within the cell, such as the nuclear membrane or the membrane that encloses mitochondria.
What is diffusion in science class 9?
Diffusion- The mixing of a substance with another substance due to the motion or movement of its particles is called diffusion. It is one of the properties of materials. The diffusion of one substance into another substance goes on until a uniform mixture is formed.
What is the best definition of diffusion?
diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
What is diffusion in biology class 9?
Diffusion can be described as the process of movement of molecules from a region of higher concentration to a region of lower concentration allowing the entry and exit of substances in and out of cells.
What is diffusion in your own words?
Diffusion is defined as a spontaneous net movement of particles down their concentration gradient or in other words from an area with greater concentration to the area with lower concentration without using any energy.
What is diffusion in biology class 10?
“Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient.”
What is meant by definition diffusion?
Diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room.
What is diffusion in science class 8?
Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient.
What is diffusion Class 12?
Diffusion is the process where gaseous atoms and molecules are moved from regions of comparatively high concentration to regions of comparatively low concentration. Diffusion of gas is inversely proportional to the molecular weight of the gases.
What role does diffusion play in the cell?
Diffusion also plays a role in the processes involved in the life of a cell, particularly the transportation of nutrients, amino acids and other essential substances from one place to another. Osmosis , the process by which molecules are transported across the walls and membranes of individual plant and animal cells, is a form of diffusion.
Why is diffusion important to cells?
Diffusion is important to organisms because it is the process by which useful molecules enter the body cells and waste products are removed. Digested food molecules (amino acids, glucose) move down a concentration gradient from the intestine to the blood.
What do things diffuse into cells?
Diffusion. Diffusion is the process by which molecules move from a position of high concentration to a position of lower concentration.
How does diffusion affect cells?
When water moves into plant cells the membrane gets pushed up against the cell wall creating hydrostatic or turgor pressure. This pressure limits the amount and rate at which water can enter the cell. Diffusion is also a major limiting factor to cell size and helps explain why unicellular organisms are generally very small.