Normal proteins allow the substances Na + and Cl- to move correctly through the cells of the skin, the pancreas and the lungs.
In contrast, the mutated proteins prevent them from moving through the cell, this causes mucus to accumulate in the skin, in the lungs and the pancreas, a medical condition called cystic fibrosis.
sodium chloride: NaCl, with Na+ and Cl- ions.
lithium nitride: Li3N, with Li+ and N3- ions.
magnesium oxide: MgO, with Mg2+ and O2- ions.
calcium phosphide: Ca3P2, with Ca2+ and P3- ions.
Try this to see if it helps.
Answer:
cyanobacteria
Explanation:
The cyanobacteria have an extensive fossil record. The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old.
