Describe how the gene-environment interaction has affected the Pima Indians
What will be an ideal response?
ANS: The Pima Indians are genetically prone to obesity but when they live in Mexico, they have a more active lifestyle and are not obese. Pima Indians living in Arizona, on the other hand, are obese because they have adopted a more sedentary lifestyle and high-fat diet. People with a genetic predisposition for obesity have a greater challenge to maintain a healthy weight in an environment that is conducive to gaining weight.
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Why are hard cheeses lower in lactose than soft cheeses?
a. The lactose molecules bond to casein
b. More lactose is removed during manufacturing
c. The bacterial culture is selected to degrade more of the lactose
d. The lactose molecules condense to form a poorly digested oligosaccharide
Which of the following foods is the richest source of omega-3 fatty acids?
A) sirloin steak B) broccoli C) tofu D) salmon
What is the amino acid pool??
a. The total amino acid content derived from a 24-hour dietary intake
b. A measure of the circulating essential amino acid levels available for protein synthesis
c. The total amount of free amino acids in the circulation destined for deamination and excretion
d. A mix of essential and nonessential amino acids derived from protein breakdown and dietary protein intake
e. The essential and nonessential amino acids from dietary intake that are available for protein synthesis
Cancer prevention depends on minimizing nutritional risks. Which of the following would NOT be considered a risk-minimizing behavior?
a. Maintaining or reaching a healthy weight b. Consuming >3 oz. of alcohol on a regular basis c. Limiting intakes of processed meat and red meat d. Eating five or more cups of fruits and vegetables daily e. Limiting sedentary behavior