Question

Complete the sentence. Oxygen moving from the bloodstream into a cell down a concentration gradient is a form of _____. A. osmosis B. endocytosis C. active transport D. passive transport

Answer 1

Oxygen moving from the bloodstream into a cell down a concentration gradient is a form of passive transport. This is because it is moving from a level of high concentration to an area of low concentration and because there is little energy being used which means passive.