The major function of iron in the body is the formation of compounds essential to the transportation and utilization of oxygen. To further this purpose, ________.
A. approximately 70 percent of the body iron is in storage form
B. the vast majority of iron in the body is used to form hemoglobin
C. the iron that is stored in the tissues is stored principally as compounds called ferritins
D. the body loses 10-15 mg of iron each day
Answer: B
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Our use of labor-saving devices has resulted in a reduction of physical energy expenditure of
A. less than 60 calories a day. B. more than 100 calories a day. C. more than 200 calories a day. D. more than 275 calories a day.
Sascha is 37 years old. She has been maintaining the same healthful body weight throughout her adult life. She recently began drinking a glass of wine with dinner every evening (5 ounces; 125 Calories) but has made no other changes in her diet or level of physical activity. According to the energy balance equation, how much weight should Sascha gain if she continues to drink this amount of wine each night for one year? Do you predict that she will actually gain this much weight? Explain why or why not.
What will be an ideal response?
BMI approximates body fat for most healthy individuals; however, BMI measures don't accurately represent body fatness for _____.
A. athletes with a low percentage of muscle B. individuals with negligible fat deposits C. individuals with large, dense bones D. men over the age of 65 E. women over the age of 60
It has been suggested that probiotics and prebiotics have a positive impact on health. Why is this? Include all potential health benefits and negative effects. What types of foods does the food industry add them to? Is any additional research needed? What are your own thoughts on supplementing foods to boost the immune system?
What will be an ideal response?