The breakdown reactions that occur are catalysed by specific enzymes. If these enzymes are not present or functional then the reactions will not occur, so the breakdown of glucose is controlled by ...

Cells respire, or breathe, oxygen or alternatives to oxygen through aerobic and anaerobic respiration, respectively. However, they are not known to do both at the same time. At least, that was the ...

There are two types of respiration: Aerobic respiration occurs in the presence of oxygen and in most cells most of the time. Anaerobic respiration occurs without oxygen and much less frequently ...

Mitochondria age differently depending upon whether they’re located in the liver, heart, or kidney, scientists find in flies and mice. A series of rodent experiments showed that even with abundant ...

The proton gradients that power respiration are as universal as the genetic code itself, giving an insight into the origin of life and the singular origin of complexity. Why do virtually all cells ...