The mitochondrion is a double membrane bound organelle. It is found in most Eukaryotic organisms. Mature blood cells do not have them. Other unicellular organisms like microsporidia have reduced or transformed their mitochondria into another structure. Only one Eukaryote is known to have lost its mitochondria, the monocercomonoides.

During the third session we continued to study enzymes. Enzymes are called by the name of the reaction they catalyze.

This week we studied Enzymes, their task in the cell, their structure, and the conditions that can affect their activity; temperature, pH, concentration.

What makes a cell to be a cell? Which qualities does it need in order to be called a living cell?