an estimated percent of persons in the united states who have hiv infection are unaware that they are infected

ATI RN

ATI Nutrition Proctored

1. 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.

2. Which enzyme is most essential for the digestion of triglycerides found in butterfat?

A. Gastric lipase
B. Pepsin
C. Mucus
D. Intrinsic factor

Correct answer: A

Rationale: The correct answer is A: Gastric lipase. Gastric lipase is crucial for the digestion of short- and medium-chain triglycerides, such as those found in butterfat. Pepsin is involved in protein digestion, not lipid digestion. Mucus acts as a protective barrier in the stomach and does not play a direct role in lipid digestion. Intrinsic factor is involved in the absorption of vitamin B12 and is not related to the digestion of triglycerides.

3. Each of the following is a function of vitamin A, except one. Which is the exception?

A. Prevention of night blindness
B. Growth of soft tissues and bone
C. Maintenance of more than 200 genes
D. Integrity of body openings and their linings

Correct answer: C

Rationale: The correct answer is C. Maintenance of more than 200 genes is not a function of vitamin A; instead, it is a function of Vitamin D. Vitamin A plays a crucial role in the prevention of night blindness by aiding in the production of the visual pigment rhodopsin. It also supports the growth of soft tissues and bone, as well as the integrity of body openings and their linings. Choice C is incorrect because the maintenance of genes is primarily associated with Vitamin D, not Vitamin A.

4. Which food is the best source of omega-3 fatty acids?

A. Chicken breast
B. Salmon
C. Almonds
D. Eggs

Correct answer: B

Rationale: Salmon is high in omega-3 fatty acids, beneficial for cardiovascular health.

5. Can soluble fibers be fermented by gut bacteria?

A. TRUE
B. FALSE
C.
D.

Correct answer: A

Rationale: Soluble fibers can indeed be fermented by gut bacteria in the large intestine, leading to the production of beneficial short-chain fatty acids. This fermentation process is important for gut health and provides various health benefits. Therefore, the statement is true. Choice B is incorrect as it contradicts the known scientific fact that soluble fibers can be broken down by gut bacteria through fermentation.