Movement of substances Flashcards

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1
Q

What is diffusion?

A

the net random movement of particles from an area of high concentration to an area of low concentration

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2
Q

What is active transport?

A

the net random movement of particles from an area of low concentration to an area of high concentration, requiring energy, against a concentration gradient

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3
Q

What is a concentration gradient?

A

the difference in concentration between two areas

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4
Q

What is surface area to volume ratio?

A

the size of the object compared with the the area that is in contact with the environment

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