Proteins are made in the mitochondria of cells, t of f? proteins make up our blood, hair, skin, heart, muscles, and bones, t or f?

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.