Which one is not a cell of the immune system? a. white blood cells b. b cells c. t cells d. red blood cells

Why does the skin of your finger shrink when you wash clothes for a long time?

What processes take place before the mature mrna exits the nucleus?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.