what is transport substance? give examples
Answers
Explanation:
Substances that are transported across the cell membrane by primary active transport include metal ions, such as Na+, K+, Mg2+, and Ca2+. These charged particles require ion pumps or ion channels to cross membranes and distribute through the body.
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.Transport is defined as a way to move things from one place to another. An example of transport is a city bus. An example of transport is a cargo ship. ... Transport means to move something from one place to another.