Study the long-term effects of oral contraceptives

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Reference no: EM133852632

Question

1. A nutrient is considered essential if ________.

All of the choices are correct.

the body does not make the nutrient, or make enough of it to meet its needs

when the missing nutrient is added back to the diet, signs and symptoms of deficiency are resolved

when the nutrient is missing from the diet, a deficiency disease occurs

Item 2

2. By weight (i.e., gram-for-gram), foods high in _______ have the highest energy density.

carbohydrate

alcohol

fat

protein

3. The Nurses' Health Studies are a set of ongoing investigations that began in 1976 to study the long-term effects of oral contraceptives. The study subjects were not assigned to any treatment, but over the years, researchers collected a large amount of data regarding the nurses' health as well as their diet, physical activity, and other lifestyle practices. The study subjects were not assigned to any experimental treatment, but over the years, researchers have collected biological specimens and a vast quantity of data regarding diet, physical activity, and other lifestyle factors. The Nurses' Health Studies are best described as ________.

case-control studies

prospective cohort studies

double-blind studies

retrospective cohort studies

4. Which of the following is an objective of Healthy People 2020?

Reduce the proportion of adults who are obese.

Increase consumption of fruit juices and refined grains.

Increase the consumption of solid fats and added sugars.

Reduce the consumption of deep red and yellow fruits and vegetables.

5. Which of the following nutrients is NOT involved in cellular development?

Proteins

Carbohydrates

Lipids

Minerals

6. Which of the following reasons is NOT an important reason why people should study nutrition?

To learn about the role of nutrients in the body and how the nutritional quality of a person's diet affects his or her health

To provide advice to people concerning which dietary supplements should be consumed and which should be avoided

To improve one's food intake to achieve or maintain a healthy weight

To recognize that humans do not have an instinctive drive to satisfy their hunger with nutritious foods

7. A possible explanation for an observation that guides scientific research is called ________.

a hypothesis

an experiment

a peer review

the scientific method

Reference no: EM133852632

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