Passive and Active Transport
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what are the particle theory of matters?
• all matter consists of extremely small particles • all particles of one substance are identical • the spaces between particles are very large compared to the size of the particles themselves. • the particles in matter attract one another. • all particles of matter are constantly in motion
Brownian motion
all particles in the universe are in constant and random motion since the particles are in constant motion they have a tendency to travel towards areas of low concentration
what is an example since the particles are in constant motion they have a tendency to travel towards areas of low concentration
a tea bag in hot water
concentration gradients
in the way the particles are travelling down a concentration gradient moving from high concentration to low concentration