Word of the Day

Cellular Respiration

A series of metabolic reactions, taking place at that the cellular level, that convert organic matter (food) into a usable form of energy.

There are two types of cellular respiration: aerobic (in the presence of oxygen) and anaerobic (without oxygen).


Most commonly the horizontal line above the repetend in a decimal.

Previously, it was used to indicate a group of terms in a mathematical expression. This has been replaced with parentheses.

Repetend: a repeated number or series of numbers; similarly, it is also means a repeated word or phrase.