Exam 1: Nutrition: Food for Health

Which of the following statements regarding Pubmed is FALSE?

Which of the following provides energy but is NOT considered a nutrient?

What is meant by the recommendation to eat in moderation?

After an experiment is completed,the scientist writes up his results and submits it to a journal.Before being accepted for publication the study will undergo peer review.What does this mean?

Which of the following statements regarding the differences between a hypothesis and a theory is TRUE?

Approximately 1,000 college students were asked to keep a record of the types and amounts of supplemental vitamins they consumed and how many colds they had over the course of a year.The amount of vitamin C consumed was compared with the students' incidences of colds.What types of study was this?

What is the relationship between serum cholesterol levels (levels of cholesterol in the blood)and cardiovascular disease?

"Some individuals need to consume more orange juice,because their body synthesizes an atypical protein that degrades vitamin C more rapidly than usual.Orange juice is an excellent source of vitamin C." What is being described?

Which of the following is a process that is part of strict safety and ethical regulations governing human subject research?

What of the following is the most reliable source of information about the effectiveness of a nutritional supplement?

Which of the following is NOT a true statement about nutritional studies using animals?

What is the difference between a single-blind and a double-blind study? Why are double-blind techniques used?

Nutrients are classified according to their chemical properties.What are the six classes of nutrients? Which are macronutrients? Which are micronutrients?

Recently Trevor received an e-mail forwarded to him by a friend.The e-mail warns all recipients of the dangers of an artificial sweetener,which according to the original author,is responsible for several types of cancer,mental illness,and several other serious ailments.The author uses several anecdotal stories as the basis for her assertions.Curious,Trevor does a search on the Internet for the author,but cannot find any information about her. a)What do you think of unsolicited e-mail as a source of nutrition advice? b)How likely is it that one product causes or cures several different diseases? c)What else makes you wonder about the validity of the information? d)How might you use the Internet to get more information about the artificial sweetener in question? e)How can you tell if nutrition information in a letter,in an article,or on television is accurate?

Dr Q is conducting an experiment to determine if vitamin Z can reduce blood pressure in a group of middle-aged adults.Dr Q asks a collegue,who is not involved in the study,to use a computer programme that assigns the students to one or two groups,purely on the basis of chance.One group receives a capsule of vitamin Z and the other group receives a vitamin-free pill that tastes and looks identical to the vitamin Z capsule.Neither Dr Q nor the participants know who is receiving the vitamin and who is receiving the vitamin-free pill.Which statement best describes the experiment?

Researchers compared the effect of a typical Canadian diet and a vegetarian diet on blood cholesterol levels and found that the vegetarian diet resulted in lower cholesterol levels that were not due to chance.What does this mean?

Describe the typical Canadian diet and explain how it could be improved.Is there anything you would like to change about the way you eat? Why or why not?

Which of the following is likely to limit food availability?

One group of subjects is asked to eat a diet high in fruits,vegetables,and dairy foods while a second group is asked to eat a diet with low amounts of fruits,vegetables,and dairy foods.The two groups' blood pressure readings are monitored and compared.What type of study was this?

Which of the following statements regarding diet-gene interaction is FALSE?