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 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
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 energy
the movement of molecules up a concentration gradient from low to high, using energy
The correct response is: the movement of molecules up a concentration gradient from low to high, using energy.
Active transport is the movement of molecules against their concentration gradient, from an area of low concentration to an area of high concentration. It requires the input of energy to accomplish this movement. So, the correct definition of active transport is:
the movement of molecules up a concentration gradient from low to high, using energy.