Describe the mitochondrial membrane.

Inner membrane is thicker than outer (60A-80A) and has a greater surface area because it presents inward folds called cristae. Density, shape and orientation of cristae are variable depending on tissue and aerobic activity level (cell respiration rate.) For example: hepatocyte cristae are lamellar, whereas adrenal glands are tubular, protists as well. Moreover IMM defers from OMM in terms of protein content (outer has 50% proteins whereas inner has 75% in weight) IMM is devoid of cholesterol and has over 100 types of proteins.