Nutrition+Energy Flashcards
What forms of energy does the body mainly need?
*Chemical, *thermal, and mechanical.
Why do we need chemical energy?
To get energy for thermal and mechanical uses.
Why do we need thermal energy?
To maintain homeostasis.
What’s homeostasis?
The process of maintaining a constant internal environment despite changes in the external environment. (So it’s stable)
Why do we need mechanical energy?
So we can move.
What’s a physical change?
The molecules are just in a different place.
Physical changes; give an example of a change of shape.
Masticating or peristalsis.
Physical changes; give an example of a change in state.
Ice melting into water in the mouth.
What’s a chemical change?
The molecules you have started with are now new/different molecules.
What’s synthesis?
When you make/build a new molecule.
What’s deconposition?
When you’re breaking down/separating bonds within a molecule.
What’s oxidation?
Reaction involving atmospheric oxygen (O2)
What’s a carbohydrate?
Sugar.
What’s the function of a carbohydrate?
Energy production of starch.
Give 5 examples of carbohydrates.
1) bread
2) pasta
3) rice
4) fruits
5) vegetables
