Food pyramid

Time flies like an arrow. Fruit flies like a banana. 

Photoautotrophs These use light as the energy source and carbon dioxide as the source of carbon. 

Photoheterotrophs Light is the source of energy, and carbon comes from organic compounds such as alcohols, fatty acids, other organic acids, or carbohydrates. 

Chemoautotrophs These use electrons from reduced inorganic compounds as their energy source and carbon dioxide as their source of carbon. Inorganic compounds can include hydrogai sulfide (H2S), elemental sulfur (S), ammonia (NHj), nitrite ions (NO2), hydrogen (H), and ferrous ions (Fe ). 

Chemoheterotrophs Both energy and carbon come from the same organic compound, such as glucose. These organisms are medically important, but some can be beneficial for bioranediation. 

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FIGURE 1.2 The food pyramid. Photosynthetic organisms at the base capture light energy. Herbivores and carnivores derive their energy ultimately from these primary producers. 

V American dietitians and members of the medical community have ridiculed low-carbohydrate diets as quackery for the past thirty years, while extolling a diet that cuts down on fat, limits meat consumption, and relies on carbohydrates as its staple. Many Americans are famil-(V iar with the food pyramid promoted by the U.S. government, with its foundation of carbohydrates such as breads, rice, and pasta, and its apex allotted to fats, oils, and sweets. Adhering to the government s... 

I he food pyramid, shown in Figure 13.42, summarizes the food intake and 1 exercise recommendations of the United States Department of Agriculture (USDA). According to this pyramid, an individual s daily diet should consist mostly of bread, cereals, grains, pastas, fruits, and vegetables, with the amount of dairy products and meats fairly limited and foods high in sugars or fats consumed... 

Which type of biomolecule does the food pyramid recommend we eat the most of ... 

Willett WC, Stampfer MJ Rebuilding the food pyramid. SciAm 288 64-71,2003. 

It is important to remember that healthy individuals can obtain sufficient vitamins and inorganic essentials from food sources in the normal diet. Unfortiuiately, many individuals fail to observe healthy eating patterns. A food pyramid has been suggested recently by the U.S. Department of Agricultme (http //www.mypyramid.gov/) as a template. Other fectors, such as lack of exercise, may result in nutritional deficiencies as well as diseases such as obesity, diabetes, and other chronic disorders. 

Harvard School of Public Health, Food Pyramids What Should You Really Eat hsph.harvard.edu/nutritionsource/what-should-you-eat/pyramid-full-story... 

A well-balanced diet contains the proper quantity of vitamins and minerals for a healthy life. The United States Department of Agriculture (USDA) defines a well-balanced diet with a guideline presented as a food pyramid. The food pyramid is organized into five color-coded groups, each with a general recommendation. These are ... 

The USDA defines a well-balanced diet with a guideline that is presented as a food pyramid. 

Figure 1.20 Food pyramid. A healthful diet includes a balance of food groups to supply an appropriate supply of calories and an appropriate mixture of biochemical ng blocks. [Courtesy of the U. S. Department of Agriculture.]... 

Escobar, A. 1997. Are all food pyramids created equal Nutrition Insights Center for Nutrition Policy and Promotion 12, 75-77. 

The U.S. Department of Agriculture has adopted a food pyramid to explain that carbohydrates in the form of cereals, grains, fruits, and vegetables should make up the majority of our diet. Fats and sweets should be consumed sparingly. Source U.S. Department of Agriculture. 

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