Instead of using its own lungs, the fetus obtains oxygen and nutrients from the mother's blood. true or false

True it gets that through the blood vessels in the umbilical cord

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.