How do cells absorb energy and nutrients?

Answer 1

The process in which cells absorb nutrients starts with digestion. When you eat something, the food is broken down to its basic elements (carbs, lipids, etc) through digestion. When the food has become sufficiently broken down, they get delivered to the cell, through the blood stream. Once at the cell, the cell opens up 'passage ways' for the nutrients to enter. It then uses these nutrients to repair itself, and create ATP.

Cells don't absorb energy, but rather generate it. The energy that a cell uses is called ATP, and is produced by the mitochondria. The things needed to produce ATP are carbon based food, water, and air.

The elements specifically needed are Carbon, Hydrogen, and Oxygen.