BIOL 1002 Chapter : Chapter 34
Document Summary
Nutrition in all organisms involves four main steps: Animal cells require a continuous supply of energy. One of the main functions of nutrition in animals is to act as an energy source. We didn"t see this aspect when we talked about nutrition in plants because they rely on photosynthesis for their energy needs. This difference is seen in the starting material. Required to break large molecules down to building blocks. The large organic molecules that animals start their nutrition with are filled with energy. The average adult needs 1500 calories per day at complete rest. Exercise (and mental activity) greatly boosts caloric requirements (see table 34-1) The categories of nutrients that animals consume reflect this need for energy supplying foods. The five major categories of animal nutrients are: As an energy source, lipids provide more energy/gram than any other nutrient source. Because of this, we also store our extra calories as fat.
