What is correct regarding diffusion?

The correct option is B. Movement of substances takes place from high concentration to low concentration. Diffusion is the spontaneous movement of a substance from a region of high concentration to a region of low concentration. It takes place in gases as well as liquids.

Which of the following defines diffusion?

Diffusion is the net passive movement of molecules or particles from regions of higher to regions of lower concentration. For diffusion to occur there must be a concentration gradient.

What is correct about diffusion rate?

The rate of diffusion, dn/dt, is the change in the number of diffusing molecules inside the cell over time. Since the net movement of diffusing molecules depends on the concentration gradient, the rate of diffusion is directly proportional to the concentration gradient (dC/dx) across the membrane.

Is diffusion active or passive?

There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.

Which statements are characteristics of the diffusion of oxygen through membranes?

Oxygen molecules are small, non-polar and uncharged. They can pass through the phospholipid bilayer of membranes by simple diffusion. They move from a high concentration to a lower concentration, down a concentration gradient.

What is diffusion example?

A tea bag immersed in a cup of hot water will diffuse into the water and change its colour. A spray of perfume or room freshener will get diffused into the air by which we can sense the odour. Sugar gets dissolved evenly and sweetens the water without having to stir it.

What does diffusion use?

Diffusion is a process which allows particles to move from areas of high concentration to areas of lower concentration. The process requires that particles are moving. As long as particles are not at a temperature of 0K (absolute zero) they have kinetic energy (energy of movement).

What type of transport is diffusion?

Passive transport does not require energy input. An example of passive transport is diffusion, the movement of molecules from an area of high concentration to an area of low concentration.

What are the 4 different types of diffusion?

Expansion Diffusion
  • Contagious Diffusion.
  • Hierarchical Diffusion.
  • Stimulus Diffusion.

What are the 5 types of diffusion?

Ideas spread when people move. You just studied 5 terms! Relocation, expansion, contagious, hierarchical, and stimulus diffusion.

What is diffusion Class 9?

Diffusion- The mixing of a substance with another substance due to the motion or movement of its particles is called diffusion. … The diffusion of one substance into another substance goes on until a uniform mixture is formed.

What is diffusion in Class 9 Example?

Hint: Simple diffusion can be described as a process in which the movement of substances occurs via a semipermeable membrane or in a solution without any help from transport proteins. The examples of simple diffusion can be bacteria delivering small nutrients, movement of water and oxygen into the cytoplasm.

Which of the following is an example of diffusion quizlet?

List examples of diffusion. Food coloring entering the egg. Oxygen moves from the lungs into the bloodstream.

What is diffusion Class 10 bio?

Answer: Diffusion is the process of movement of molecules under a concentration gradient. … Diffusion helps in the movement of substances in and out of the cells. The molecules move from a region of higher concentration to a region of lower concentration until the concentration becomes equal throughout.

What is diffusion in chemistry class 7?

Diffusion is the net movement of molecules or atoms from a region of higher concentration (or high chemical potential) to a region of lower concentration (or low chemical potential).

What is diffusion Class 8?

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.

What is diffusion in chemistry 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 is diffusion in chemistry?

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 quizlet?

What is diffusion ? Diffusion is the spreading of the particles of a gas, or of any substance in solution, resulting in a net movement from a region where they are of a higher concentration to a region with a lower concentration.

What is diffusion in cell?

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 the diffusion in biology?

Diffusion is the net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration. This is due to the random movement of the molecules. The difference in the concentration of a substance between two areas is called the concentration gradient .