which vitamin is essential for calcium absorption and bone health
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ATI TEAS 7

TEAS 7 science quizlet

1. Which vitamin is essential for calcium absorption and bone health?

Correct answer: C

Rationale: Vitamin D is essential for calcium absorption in the intestines, which is crucial for maintaining strong and healthy bones. Without adequate vitamin D, the body cannot effectively absorb calcium, leading to weakened bones and an increased risk of fractures. Vitamin A (Choice A) is important for vision and immune function but is not directly involved in calcium absorption or bone health. Vitamin C (Choice B) is essential for collagen synthesis and immune function, but it does not play a direct role in calcium absorption or bone health. Vitamin E (Choice D) acts as an antioxidant and helps protect cells from damage, but it is not specifically required for calcium absorption or bone health. Therefore, the correct answer is Vitamin D as it is crucial for optimal bone health.

2. Which of the following words contains an exception to a spelling rule?

Correct answer: C

Rationale: The correct answer is C, 'Noticeable.' This word contains an exception to the common spelling rule of dropping the 'e' before adding a suffix starting with a vowel. In this case, the 'e' is retained in 'noticeable' before adding the suffix '-able.' Choices A, B, and D do not involve any spelling rule exceptions. 'Unclear,' 'Memorize,' and 'Grieved' follow standard spelling conventions without any irregularities.

3. Which of the following types of writing would include a bibliography of sources at the end?

Correct answer: B

Rationale: A research paper typically includes a bibliography of sources to document the research conducted. In this case, a research paper on the Great Migration would require a bibliography to cite the sources used. Choices A, C, and D do not typically require a bibliography as they are not research-based and focus more on personal or fictional content.

4. Which of the following correctly lists the normal blood flow through the heart?

Correct answer: B

Rationale: The correct order of normal blood flow through the heart is as follows: from the body, blood flows into the right atrium, then to the right ventricle, followed by the lungs through the pulmonary artery for oxygenation. Oxygenated blood then returns to the heart through the pulmonary veins into the left atrium, then moves into the left ventricle before being pumped out to the body. Choice B correctly depicts this sequential flow of blood through the heart. Choices A, C, and D are incorrect as they do not follow the typical path of blood flow through the heart.

5. Solve for x: 3(x - 1) = 2(3x - 9)

Correct answer: D

Rationale: To solve the equation 3(x - 1) = 2(3x - 9), first distribute and simplify both sides to get 3x - 3 = 6x - 18. Next, subtract 3x from both sides to get -3 = 3x - 18. Then, add 18 to both sides to obtain 15 = 3x. Finally, divide by 3 to find x = 5. Therefore, the correct answer is x = 5. Choices A, B, and C are incorrect because they do not represent the correct solution to the given equation after proper algebraic manipulation.

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