ECET 301 Week 1 Homework

Complete Problems 2.2, 2.3, and 2.4 2.2 Water and solids enter and leave the human body through various means. The masses of water and solids for an average man for one day are shown in Figure 2.19. 2.3 For breakfast, Joe had 200 g oatmeal, 75 g milk, and 1 orange (225 g). For lunch, he had 1 apple (100 g), 4 pieces of bread (100 g), 90 g bacon, and 40 g cheese. For dinner, Joe had 350 g pork, 150 g asparagus, 150 g potatoes, and 2 pieces of bread (50 g). The protein, fat, and carbohydrate content as well as the energy content of the different foods are given in Table 2.5. You may use Excel, MATLAB, or another program of your choice for calculations. 2.4 The body needs a constant supply of energy in order to survive. The minimum level of energy required just to perform chemical reactions in the body and maintain essential activities of the central nervous system, heart, kidney, and other organs is known as the basal metabolic rate (BMR). However, if an individual is to engage in such activities as eating and walking, additional energy must be available. On average, an individual performing normal daily activities expends 2750 kcal/day. The daily energy expenditure is comprised of maintaining the BMR, digesting and processing food (220 kcal), non-exercise activities such as maintaining body temperature (190 kcal), and purposeful physical activity (690 kcal).