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33%
(01:45)
correct 67%
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It is difficult to find the precise cause of any disease resulting from B-vitamin deficiencies. For example, it is known that a deficiency in all the B-vitamins causes the disease beriberi and that beriberi is always accompanied by a deficiency of vitamin B1. However, in a recent study, human volunteers did not contract beriberi despite being fed a special diet that was deficient in B1.
Which of the following if true best explains the results above?
A) Some individuals whose diets lack vitamin B1 will contract beriberi if they consume a generally unhealthful diet. B) A deficiency in vitamin B1 is not necessary to contract beriberi. C) Beriberi can be cured by any variety of B-vitamin supplements. D) Beriberi is caused by deficiencies in a combination of B-vitamins. E) Deficiencies in the B-vitamins have widely varying effects on different individuals, so that specific diseases cannot be adequately identified.
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It is difficult to find the precise cause of any disease resulting from B-vitamin deficiencies. For example, it is known that a deficiency in all the B-vitamins causes the disease beriberi and that beriberi is always accompanied by a deficiency of vitamin B1. However, in a recent study, human volunteers did not contract beriberi despite being fed a special diet that was deficient in B1.
Which of the following if true best explains the results above?
A) Some individuals whose diets lack vitamin B1 will contract beriberi if they consume a generally unhealthful diet. B) A deficiency in vitamin B1 is not necessary to contract beriberi. C) Beriberi can be cured by any variety of B-vitamin supplements. D) Beriberi is caused by deficiencies in a combination of B-vitamins. E) Deficiencies in the B-vitamins have widely varying effects on different individuals, so that specific diseases cannot be adequately identified.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.