nutrition+notes+for+test-+rebecca

__//**NUTRITION!**//__

1.Why do we need to eat? -energy -matter- the building blocks to build cells. - we have to eat because we lose matter, and then we have to replace that matter we lose. - we lose cells, waste, exercise,

2. calories- energy - how much energy is in that food. - we end up consuming too many calories.

3. Fat - why do we need fat? - insulation. - it stores long term energy - it makes the cell membrane. The fat is the barrier made of lipids around the cell membrane.

fats that you should avoid= - saturated fats- come from animals - solid at room temp.

tans fat- man made fat. ITS REALLY BAD FOR YOU!!!

4. cholesterols- - don't need a lot in your diet. - can heart disease - to much salt causes high blood pressure

Fat, sodium, and cholesterol- you need them in your diet, but not a lot.

5. CARBS good carbs= fiber - plant material, where you can tell where it came from a plant. Its not pure sugar.

bad carbs= PURE SUGAR

6. Protein - anything a cells does is done by a protein. - cells need to know how to make a protein - proteins are made out of amino acids- we eat this so we know how to make out our porteins. This is the building blocks for our body to make our own portein. - there are 20 different amino acids. - humans can only make 10 of these, we HAVE to eat the rest. - if you don't eat them, you will die. YOU HAVE TO HAVE PROTEIN IN YOUR DIET!! -foods you shoudl eat: animals - eating other animals will allow you to have a lot of protein, - ANIMAL MUSCLES - vegetarians eat dairy, milk, eggs, - vegan's eat rice and beans, corn, pasta

Vitamin A- blindness- VISION - carrots

Vitamin C- Helps your immune system - sailors get a disease called SKIRBY! - vitamin c makes collagen. - you find collagen is found in your lips - you can inject this into your body. -25% of our body is made of collagen

Calcium= build bones

Iron- Red blood cells. - you are going to feel tired is you have low iron.