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A common drug for the treatment of tuberculosis is known to markedly interfere in the metabolism of vitamins


A deficiency of what vitamin produces a characteristic cracking and redness at the corners of the mouth.


A deficiency of which of the following vitamins results in accumulation of homocysteine in the blood?


A general niacin deficiency is known to be manifested in abnormalities of all of the following organs/ systems except.

Skeletal system

A low protein diet in which corn is a principle food has been found to cause a deficiency of what vitamins


A person who shuns dairy and spends most of her time indoors would likely benefit from a supplement of?

Vitamin D

A person with a disorder that limits absorption of bile is at an increased risk for deficiency of


A protein that binds with biotin (thus inhibiting absorption) is found in which food?

Raw egg whites

A similar type of anemia is produced when there is a deficiency of either

vitamin B12 or folate

A vitamin supplement labeled as "high protein" contains an amount that is

100% or more of the daily value

All of the following are characteristic of thiamin nutrition expect

they enhance that action of anticlotting medication

All of the following are features of vitamin B6 metabolism except

it enhances physical performance when supplied at a level of 1 mg/g of dietary protein

All of the following are general characteristics of the fat-soluble vitamins except

excesses are eliminated from the kidneys

All of the following are known to occur from a mild iron overdose expect

black tongue

All of the following proteins of folate in nutrition expect

it functions primarily in the transfer of amino groups

All of the following are required for efficient dietary absorption of vitamin B12 except

mucosal cobalaminase

Among all the vitamins, which is believed to be most vulnerable to interactions with drugs.


Among the following compounds that serve as a coenzyme in metabolism, which is considered a vitamin for human beings?


Among the following water- soluble vitamins, a secondary deficiency would most likely be seen for

Vitamin B12

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