Question

The simplest type of cell transport is _________________, in which molecules move from an area of _______________ concentration to an area of __________ concentration. Diffusion does not use ATP, so it is called _____________ transport. The movement of a solute from an area of low concentration to an area of high concentration requires __________ usage by _________ proteins. This form of transport is referred to as _______________ transport.

Answer 1

The simplest type of cell transport is diffusion, in which molecules move from an area of high concentration to an area of low concentration. Diffusion does not use ATP, so it is called passive transport. The movement of a solute from an area of low concentration to an area of high concentration requires ATP usage by carrier proteins. This form of transport is referred to as active transport.