Secondary vitamin B12 deficiency is caused by reduced ____

Secondary vitamin B12 deficiency is caused by reduced _____ of the vitamin.

A. absorption
B. consumption
C. production
D. elimination

Q. 2

The conversion of homocysteine to methionine requires the vitamins folate and

A. vitamin B6.
B. pantothenic acid.
C. vitamin B12.
D. niacin.

Q. 3

The type of anemia that is seen in severe folate deficiency is characterized by large, immature blood cells. This type of anemia is called _____, _____ anemia.

A. microcytic, hypochromic
B. microcytic, megaloblastic
C. macrocytic, megaloblastic
D. megaloblastic, hypochromic

Q. 4

Adequate folate intake during pregnancy can help to prevent

A. neural tube defects.
B. preterm labor.
C. morning sickness.

Q. 5

The protein found in raw egg whites that can bind to biotin and severely impair its absorption is called

A. avidin.
B. mucin.
C. heme.
D. collagen.

Q. 6

Which B vitamin can be toxic when taken in very high supplemental doses, causing neurological problems?

A. Niacin
B. Folate
C. Vitamin B12
D. Vitamin B6

Q. 7

The condition of niacin deficiency is called

A. beriberi.
B. scurvy.
C. pellagra.
D. ariboflavinosis.

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Secondary vitamin B12 deficiency is caused by reduced _____ of the vitamin.

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