Josh Was a Participant in a Clinical Study to Determine

question 65

Multiple Choice

Josh was a participant in a clinical study to determine how much thiamin cures beriberi,the vitamin's deficiency disease.During the study,Josh consumed only a formula diet that was nutritionally complete,except it did not contain thiamin.Within a few weeks,Josh developed beriberi.At that point,researchers gave 0.20 mg thiamin to Josh each day for a week,but his signs and symptoms of beriberi remained.In the weeks that followed,the scientists continued to increase Josh's intake of the vitamin by 0.2 mg/week.After a week of taking 0.6 mg of thiamin/day,Josh reported feeling much better.Based on this information,the researchers concluded that Josh's

• A)RDA for thiamin was 0.6 mg/day.
• B)UL for thiamin was 0.20 mg/day.
• C)AMDR for thiamin was between 0.2 and 0.6 mg/day.
• D)requirement for thiamin was 0.6 mg/day.

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Definitions:

Felsic

Refers to igneous rocks that are rich in lighter elements such as silicon and oxygen, generally characterized by light colors.

Mafic

A material having high contents of magnesium (Mg) and iron (Fe), generally accompanied by a decreased amount of silica.

Igneous Fragments

Pieces of rock formed from the cooling and solidification of magma or lava, often found in volcanic or plutonic environments.

Conduction

The transfer of heat or electricity through a material or substance from one molecule to the next.