Exam 2: Evaluating Nutrition Information

Which of the following kinds of studies would be the best to use when designing a scientific investigation to determine whether there is an association between consuming diets high in sodium during adolescence and developing high blood pressure in adulthood?

Emily has brittle fingernails that crack and split easily.Emily's mother advises her daughter to take gelatin pills 3 times/day,because she has heard the practice strengthens fingernails.The mother's nutrition-related advice about the benefit of taking gelatin pills is an example of a(n)

During a television interview,Dr.Ima Quack provides the following statement."Most Americans suffer from nutritional deficiency diseases and will develop cancer within the next 10 years because they are not taking my megavitamin formula therapy." Dr.Quack's statement is an example of a(n)

Scientists who investigate lifestyle factors that influence the prevalence of obesity among different population groups are conducting a(n)____ study.

Which of the following statements is true?

Which of the following statements is false?

Which of the following periodicals features peer-reviewed articles?

A scientist discovers a chemical compound in certain rocks that she calls "stonia." She cannot market extracts that contain stonia as a dietary supplement,because it

Researchers are conducting a study to determine the effects of vitamin C on the human immune system.The study involves providing pills that contain vitamin C to one group of human subjects and pills that do not contain vitamin C or other active ingredients to another group of people.The pills that do not contain the vitamin are

Which of the following statements is true?

Which of the following observations is an example of a positive correlation?