Which of the following is NOT a feature of folate nutrition?
a. Most food folate is bound to a string of amino acids
b. Folate is actively secreted back into the GI tract with bile
c. Food folate must be hydrolyzed by intestinal cell enzymes prior to absorption
d. Folate must be methylated by homocysteine prior to crossing the brush border membrane
d
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A man who has a BMI of 20 is considered to be
A) obese. B) at a healthy weight. C) underweight. D) overweight.
Which of the following is NOT among the features of bone health and smoking?
a. Bone density appears to recover in former smokers b. Older smokers have less dense bones than older nonsmokers c. Sedentary smokers have less dense bones than sedentary nonsmokers d. Smokers adapt by increasing their calcium absorption and reducing their bone resorption rate
Which of the following products of digestion is NOT normally released directly into the bloodstream?
a. Fats b. Minerals c. Vitamin C d. Carbohydrates
Vitamin C is involved in a wide variety of redox reactions because:
A) it is an oxidizing agent. B) it acts as a coenzyme. C) it is an antioxidant. D) it acts as an enzyme.