Energy Transfers & Nutrients Flashcards
Why do we need to eat?
For energy.
What good things do we get from food?
Nutrients.
What’s energy?
The ability to do work.
Name 6 forms of energy.
1-Thermal 2-Mechanical 3-Chemical 4-Radiation 5-Solar 6-Wind
Matter and energy can only be ________.
Transformed.
Which 3 of the 6 forms of energy does the human body need? And why?
1-Chemical: to get energy for mechanical and thermal uses
2-Thermal: To maintain homeostasis
3-Mechanical: To move
What does homeostasis mean?
Being able to maintain internal environment despite any changes on the external environment.
What are the 3 chemical changes? And give a definition.
1-Synthesis: making a new molecule
2-Decomposition: breaking down a molecule
3-Oxidation: adding oxygen
What are the 2 reasons we need nutrients?
1-To build and repair tissues
2-For energy
What’s the purpose of carbohydrates,(carbs/sugars)?
Energy production=starch
Whats the purpose of fats? Name 2 things.
1-Energy production
2-carries fat soluble vitamins
What’s the purpose of proteins?
Used as building and maintenance, (tools) by the cells.
What’s the purpose of vitamins and minerals?
Used to regulate and help with chemical reactions in the cell.
Why do we need water? Name 2 things.
1-To maintain structure
2-Needed for the movement and exchange of chemicals in the body
Why do we need oxygen?
For energy!
