Substances move in and out of cells by diffusion down a concentration gradient, through a partially permeable membrane. Selected substances can move up a concentration gradient with the help of specialized molecules embedded in the membrane. This is called assisted diffusion or active transport.
Q. How do particles behave in solid?
Solid – In a solid, the attractive forces keep the particles together tightly enough so that the particles do not move past each other. In the solid the particles vibrate in place. Liquid – In a liquid, particles will flow or glide over one another, but stay toward the bottom of the container.
Table of Contents
- Q. How do particles behave in solid?
- Q. What is the movement of particles from high to low concentration?
- Q. Why will there be a movement of a substance?
- Q. What assists the movement of substances by facilitated diffusion?
- Q. Why does diffusion increase faster with temperature?
- Q. How do you find the highest rate of diffusion?
- Q. Which of the following best describes diffusion?
Q. What is the movement of particles from high to low concentration?
Diffusion is the movement of particles move from an area of high concentration to an area of low concentration until equilibrium is reached.
Q. Why will there be a movement of a substance?
Diffusion is the net movement of substances from an area of higher concentration to an area of lower concentration. This movement occurs as a result of the random and constant motion characteristic of all molecules, atoms, or ions (due to kinetic energy) and is independent from the motion of other molecules.
Q. What assists the movement of substances by facilitated diffusion?
Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special transport proteins. Through the use of ion channel proteins and carrier proteins that are embedded in the cell membrane, these substances can be transported into the cell.
Q. Why does diffusion increase faster with temperature?
The speed of a molecule is proportional to the square root of the absolute temperature and temperature is the measure of the average kinetic energy of molecules in an object, therefore when the temperature increases the molecules will have more kinetic energy, so they move faster and due to more spontaneous spreading …
Q. How do you find the highest rate of diffusion?
Check back in 24 hours! As rate of diffusion is inversely proportional to square root of molar mass, Gas with lowest molar mass will have highest rate of diffusion..
Q. Which of the following best describes diffusion?
Diffusion is the movement of molecules from an area of lower concentration to one of higher concentration by random molecular motion. Diffusion is the movement of molecules from an area of higher concentration to one of lower concentration caused by an input of energy to the system.
