Phospholipids serve a major function in the cells of all organisms: they form the phospholipid membranes that surround the cell and intracellular organelles such as the mitochondria. The cell membrane is a fluid, semi-permeable bilayer that separates the cell's contents from the environment, see animation below.ipid molecules are slightly soluble to insoluble in water. Lipids are hydrophobic because the molecules consist of long, 16-18 carbon, hydrocarbon backbones with only a small amount of oxygen containing groups.
The short answer? No, while in the womb, a fetus doesn't poop â although it does pee. However, some waste does accumulate in its lower intestine throughout the pregnancy, which is a result of nutrients received from the mother via the umbilical chord. Called meconium, the fetus does not poop this while in the womb. The fetus will excrete this sticky, greenish waste shortly after birth.
Many pregnant women wonder what their baby is doing when they feel those rhythmic movements later in pregnancy. Most are surprised to learn their baby has the hiccups! That is right, many babies have the hiccups while they are in the womb and some babies have the hiccups multiple times per day. But, what causes this and why do babies hiccup in the womb anyway?