Melissa La Rosa
Intro to Biology
Writing Assignment # 2
Why does the human body need energy? What forms of energy does the body require?
We need energy to survive, all the basic functions of a human to survive need energy, to maintain them
from not stopping. e.g. breathing, your heart beating, moving etc. energy is needed all over the body, if
you want to move, your muscles use energy, when you carry something, you use energy, when you talk,
when you look, when you do anything, your actually using energy, your body is constantly warm because
its using energy to keep it that way.
Your whole body needs energy, otherwise it wouldn’t work, and we get our energy from eating foods and
drinking. You might have heard of energy drinks before, there to give you more energy. the food and
drink goes into our stomach and from there it is digested, absorbed, then either stored or converted into
energy by chemical reactions in our body, so food is actually chemical energy, just like toys get there
energy from batteries, which is electrical energy (but if you look into a battery, its actually also chemical
energy in the form of pastes being converted into electrical energy)
The basic and fundamental form of energy the body obtains is derived from the food one consumes. In
one's cells these foods undergo a bio-chemical process and chemical energy is produced. The
consumption of foods that lack nutrition diminishes the body's capacity to utilize this chemical energy
optimally. Similarly, oxygen from unpolluted air is necessary to ensure that optimum metabolic energy is
derived from the food and drink one consumes. To ascertain that optimum health is achieved the quality
of foods and water one consumes must be monitored closely.
How does the body get the energy it needs to fuel its chemical reactions?