CK12 Life Science

death, although this is very rare. Minerals Mineralsare chemical elements that are needed for body processes. Minerals that you ...

Water Did you know that water is also a nutrient? By weight, your cells are about two-thirds water, so you cannot live without i ...

Hyponatremia can cause death. It requires emergency medical care. Lesson Summary The body needs food for energy, building mater ...

http://www.nlm.nih.gov/medlineplus/ency/article/002404.htm http://www.textbookofbacteriology.net/normalflora.html http://en.wik ...

Points to Consider Think about how you can be sure you are getting enough nutrients? Do you think knowing the nutrients in the ...

Meat and beans—such as chicken, fish, soybeans, and kidney beans. Figure17.6: MyPyramidcanhelpyouchoosefoodswiselyforgoodhealt ...

good health. Keep in mind that nutritional guidelines may change throughout life. As food provides energy and nutrients for grow ...

Figure 17.7: Reading nutrition facts labels can help you choose healthy foods. Look at the nutrition facts label shown here. Do ...

Next on the nutrition facts label, look for the percent daily values (% DV) of nutrients. A food is low in a nutrient if the per ...

top of the list, look for ingredients such as whole grains, vegetables, milk, and fruits. These are the ingredients you need in ...

Figure 17.9: All of these activities are good ways to exercise and use extra energy. The Calories given for each activity are th ...

Review Questions List the six food groups represented by MyPyramid. Which food group contains soybeans, kidney beans, and fish? ...

Vocabulary enriched Term used for an ingredient that has been processed; ingredients are enriched with added nutrients to replac ...

Check Your Understanding What is a chemical reaction? What is an enzyme? What are bacteria? Introduction Nutrients in the food ...

Figure 17.10: This drawing shows the major organs of the digestive system. Trace the path of food through the organs of the dige ...

much easier and quicker for chemical reactions to take place. Like a wrench, enzymes can also be used over and over again. But y ...

secreted into the intestine, where bile acids break down dietary fats. Bile acids serve other functions, including eliminating c ...

Figure 17.13: This drawing shows the liver, gall bladder, and pancreas. These organs are part of the digestive system. Food does ...

Mouth, Esophagus, and Stomach The mouth is the first organ that food enters. However, digestion may start even before you put th ...

The jejunum is the second part of the small intestine. This is where most nutrients are absorbed into the blood. The jejunum is ...