BIOL 1002 Chapter : Ch 34 Notes
Document Summary
Chapter 34: nutrition and digestion: remember the basics about nutrition, nutrition in all organisms involves four main steps: Synthesis of molecules for the organism"s body: 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. 1 calorie = 1 kilocalorie (1000 calories): 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. More calories with less weight (3600 calories/pound) Fats are hydrophobic and do not cause accumulation of water. Functions as insulation because fat conducts less heat (see fig 34-1)
