The oxygen end of the molecule has a slight negative charge, and the hydrogen end has a slight positive charge. Adjacent water molecules are joined by ______ bonds. Relative to a pH of 6, a pH of 4 has a ______.
Maca redirects here. For other uses, see Maca (disambiguation). Lepidium meyenii (maca) is an herbaceous biennial plant of the crucifer family native to the high Andes of Peru. It was found at the Meseta de BombÃ³n close to Junin Lake in the Andes. It is grown for its fleshy hypocotyl (a fused hypocotyl and taproot), which is used as a root vegetable and a medicinal herb.
CEA is a glycoprotein most often associated with colorectal cancer, and used to monitor patients with this type of cancer. Its most popular use is in early detection of relapse in individuals already treated for colorectal cancer.