Page 381 - Microsoft Word - LessonPlan-Overview.doc
P. 381
Unit 19: Biology Part 2 Page 36 of 137
cover food, drink and their effects In this chapter we will consider
on our health. several things:
Why we drink and eat.
What we drink and eat.
What happens to our food
and drink after we put it in
our mouths.
You are what you eat. What you The Six Nutrients
eat gives you the energy to do
what you do, the building blocks to Nutrients are the molecules our
build and repair yourself, and to body needs for:
keep all your systems running well a.) Energy
(maintain homeostasis). Does that b.) To build and repair itself
mean that if you eat nothing but c.) To maintain homeostasis
beef you will start moo-ing?
There are six types of nutrients
No! But it does mean that if your which the body needs:
diet is healthy (contains the
energy, building blocks, and Protein: Proteins are made up of
nutrients you need in the right smaller molecules—called amino
amounts) then chances are you will acids—which are strung together
be healthy and then folded into a three-
dimensional shape. Proteins are
A diet is simply the sum of the the main build blocks of our
food and drink consumed tissues, they help fight bacteria
considered in terms of its effect on and other harmful invading
health. When we say “diet”, we organisms and molecules, they are
sometimes immediately think also involved in many biological
about losing weight. processes in the body from cell
signaling to carrying oxygen in the
However, in this chapter on food
and its effects on our bodies we blood. They are very important.
will use the word diet to simply High concentrations of protein are
mean the sum of food and drink found in meat as well as nuts and
consumed. some vegetables. It is important
not only to get the right quantities
(~34 grams/day) but also all
© 2011 Supercharged Science www.ScienceLearningSpace.com
783
