Aliver cell requires energy to move vitamins from an area of low concentration, across the cell membrane, to an area of high concentration. the process used by the liver cell is called

The process used by the liver cell is called active transport

Active transport is the process by which substances move across a cell membrane from an area of low concentration to an area of high concentration. In active transport, molecules move against the concentration gradient and the process need cellular energy to perform the movement.

the sphincter muscles at the end of the digestive tract is the anus.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above