Without mitochondria (singular, mitochondria), higher animas would most likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a proved much less efficient that aerobic respiration.
Effector , sensor, control center
Proteins are formed by linking amino acids with peptide bonds, and the amino acid bond is also formed through a condensation reaction, where the carbonyl and the amine group link together with the release of water.
