Nokea
What is the end product of lipid digestion?
- A. fatty acid
- B. sucrose
- C. monosaccharide
- D. amino acid
Correct Answer: A
Rationale: The correct answer is A, fatty acid. During the process of lipid digestion, triglycerides are broken down into fatty acids and glycerol. These end products are then absorbed into the bloodstream or lymphatic system for further processing. Choices B, C, and D are incorrect because sucrose is a disaccharide, monosaccharide is a simple sugar unit, and amino acid is a building block of proteins, not the end product of lipid digestion.
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What dietary factor raises triglyceride levels?
- A. high refined carbohydrate intake
- B. low soluble fiber intake
- C. high iron intake
- D. low fat intake
Correct Answer: A
Rationale: The correct answer is A: high refined carbohydrate intake. High intake of refined carbohydrates, such as sugars and white flour, can lead to elevated triglyceride levels, increasing the risk of cardiovascular disease. Choice B, low soluble fiber intake, is incorrect because soluble fiber actually helps lower triglyceride levels. Choice C, high iron intake, is incorrect as iron intake is not directly linked to raising triglyceride levels. Choice D, low fat intake, is also incorrect as not all fats raise triglyceride levels; it depends on the type of fat consumed.
Plant stanols and sterols help to lower LDL cholesterol and are often added to which food product?
- A. margarine
- B. milk
- C. cereal
- D. yogurt
Correct Answer: A
Rationale: Plant stanols and sterols are commonly added to margarine to help lower LDL cholesterol levels. Margarine acts as a vehicle for these compounds, making it easier for individuals to incorporate them into their daily diet. While milk, cereal, and yogurt are healthy food options, they are not typically enriched with plant stanols and sterols for cholesterol-lowering purposes, making them less likely candidates as the correct answer.
Which term is used to describe medical practices that have been thoroughly evaluated using scientific methods?
- A. Meta-analysis
- B. Systematic reviews
- C. Evidence-based
- D. Observational studies
Correct Answer: C
Rationale: The correct answer is C, 'Evidence-based.' Evidence-based practices refer to medical practices that have been thoroughly evaluated and supported by scientific research. Meta-analysis (A) involves statistical analysis that combines the results of multiple studies. Systematic reviews (B) are comprehensive reviews that synthesize evidence from multiple studies. Observational studies (D) are research methods where researchers observe subjects in their natural environment.
Diseases of the heart and blood vessels are collectively referred to as _____.
- A. Coronary artery disease
- B. Cardiovascular disease
- C. Coronary heart disease
- D. Coronary vessel disease
Correct Answer: B
Rationale: The correct term for diseases of the heart and blood vessels is cardiovascular disease. While coronary artery disease (Choice A) specifically involves the narrowing of coronary arteries, it is just one type of cardiovascular disease. Coronary heart disease (Choice C) is also a specific condition related to the heart's blood vessels. Choice D, coronary vessel disease, is not a commonly used term to describe diseases of the heart and blood vessels. Therefore, Choice B, cardiovascular disease, is the most inclusive and appropriate term to refer to these conditions.
An estimated _____ percent of persons in the United States who have HIV infection are unaware that they are infected.
- A. 4%
- B. 21%
- C. 34%
- D. 49%
Correct Answer: B
Rationale: The correct answer is B: '21%'. Approximately 21% of persons in the United States who have HIV infection are unaware that they are infected. This percentage represents a significant portion of individuals who are not aware of their HIV status, highlighting the importance of increased testing and awareness campaigns. Choices A, C, and D are incorrect as they do not align with the estimated percentage provided in the context.