Exam 11: Nutrients Involved in Antioxidant Function

Which of the following hormones requires selenium for its synthesis?

Vitamin C assists in the formation of the structural protein called:

In general, what percentage of carotenoids are absorbed in the GI tract?

Imagine you have been asked to develop a blog post to discuss the role of antioxidants in the prevention of cancer. Create your post including background information on the role of antioxidants in preventing cancer, studies that have assessed the value of antioxidant supplements, and some advice for your readers on dietary choices that will reduce their risk of cancer.

When travelling in India, you observe young children living on the street. They appear to be undernourished and unable to see in the dark. What has happened to these children? Explain why and how this disease developed.

Which of the following is a function of vitamin E?

You have decided to do a research study on the effects of a diet high in antioxidant vitamins E and C and beta-carotene on the risk for cardiovascular disease. Provide a brief outline of your research study including: the importance of the study, your hypothesis, the risk factors for cardiovascular disease that you would need to control for, the outcome measures that you would use to determine if the risk is increasing or decreasing, and the dietary intervention. Identify confounding factors that could also change in the treatment diet and consequently affect your study results.

Timo has recently been diagnosed with hemochromatosis. He would like to take a vitamin C supplement to reduce the duration of his cold. How would you advise him? Justify your response.

Which of the following would you expect to be the weakest antioxidant?

Which research study demonstrated a link between vitamin E consumption and a decreased risk of heart disease in smokers?

Which of the following is true about absorption of retinol?

When analyzing the nutritional profile for cooked spinach you read that it contains 6 mg of beta-carotene per 100 g serving. How many mg of vitamin A would this be equivalent to?

If you were to purchase a vitamin E supplement, which form would you look for?

Vitamin E is added to many oil-based skin care products because:

Which of the following is a function of carotenoids?

Which of the following nutrients requires the most frequent consumption to ensure adequate body stores?

Which of the following contains the greatest amount of bioavailable beta-carotene?

Which of the following increases the RDA for vitamin C?

Do you agree with the Canadian Cancer Society's recommendation that Canadian adults take a vitamin D supplement daily during the fall and winter months? Why or why not?

Prakash is a 45-year-old male who has been smoking since he was 12 years-old. He would like to take a beta-carotene supplement to reduce his risk of developing lung cancer. What dose would you recommend?