Respiration is the physiological process through which oxygen in the environment can be exchanged with carbon dioxide from an organism. This process requires specialized organs such as the lungs or ...

The Krebs cycle is named after its discoverer, Hans Krebs. It is also known as the citric acid cycle or the tricarboxylic acid cycle. It is a series of chemical reactions required for cellular ...

The bacterial flagellar motor is finally understood after 50 years. In its workings, columnist Natalie Wolchover finds the ...

Cardiogenesis within embryos or associated with heart repair requires stem cell differentiation into energetically competent, contracting cardiomyocytes. While it is widely accepted that the ...