Which are example of active transportation across the cell membrane?

Explanation:

-Sodium-potassium pump (exchange of sodium and potassium ions across cell walls)

-Amino acids moving along the human intestinal tract.

-Calcium ions moving from cardiac muscle cells.

-Glucose moving in or out of a cell.

-A macrophage ingesting a bacterial cell.

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called