In a first pregnancy, Rh sensitization is not likely. Usually, it only becomes a problem in a future pregnancy with another Rh positive baby. During that pregnancy, the mother's antibodies cross the placenta to fight the Rh positive cells in the baby's body.
Definition of Lysosome. Lysosome: An organelle (a little organ) in a cell containing enzymes that degrade macromolecules (large molecules) and other items (such as bacteria) taken up by a cell during the process of endocytosis.
4.9 Lysosomes and peroxisomes. Lysosomes are small spherical organelles, enclosed by a single membrane, which are common in animal cells but rare in plant cells.They measure about 0.5â1.0 Âµm across, and they contain digestive enzymes.eroxisomes are also small enzyme-containing organelles bound by a single membrane, which are very similar in size to lysosomes, measuring between 0.2 and 1.0 Âµm in diameter.