What Goes In Must Come Out Quick Check 2 of 52 of 5 Items Question Endocytosis and exocytosis are forms of active transport. What is active transport?(1 point) Responses the movement of molecules up a concentration gradient from low to high, using energy the movement of molecules up a concentration gradient from low to high, using energy the movement of molecules down a concentration gradient from high to low, using no energy the movement of molecules down a concentration gradient from high to low, using no energy the movement of molecules up a concentration gradient from low to high, using no energy the movement of molecules up a concentration gradient from low to high, using no energy the movement of molecules down a concentration gradient from high to low, using energy the movement of molecules down a concentration gradient from high to low, using energy Skip to navigation page 8 of 8

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Active transport is defined as the movement of molecules up a concentration gradient from low to high, using energy. Therefore, the correct response is:

the movement of molecules up a concentration gradient from low to high, using energy.