NR 228 Exam 2 Study Guide UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Thiamin (B1) - CORRECT ANSWER - Water-soluble vitamin
Coenzyme energy metabolism; muscle nerve action
§ Part of an enzyme needed for energy metabolism
§ Important to nerve function
Where do we get Thiamin (B1) - CORRECT ANSWER - pork, whole-grain or enriched
breads and cereals, legumes, nuts and seeds
Thiamin (B1) deficiency - CORRECT ANSWER - Beriberi!!, neuritis, edema, cardiac
failure
Riboflavin (B2) - CORRECT ANSWER - water soluble
Coenzyme energy metabolism
normal vision and skin health
Where do we get Riboflavin (B2) - CORRECT ANSWER - Milk and milk products; leafy
green vegetables; whole-grain, enriched breads and cereals
Riboflavin (B2) deficiency - CORRECT ANSWER - Photophobia, cheilosis, glossitis,
corneal vascularization, poor growth
,Niacin (B3) - CORRECT ANSWER - water soluble
Cofactor to enzymes involved in energy metabolism; glycolysis and tricarboxylic acid (TCA)
cycle synthesis
important for nervous system, digestive system, and skin health
Where do we get Niacin (B3)? - CORRECT ANSWER - Meat, poultry, fish, whole-grain
or enriched breads and cereals, vegetables (especially mushrooms, asparagus, and leafy green
vegetables), peanut butter
Niacin (B3) deficiency - CORRECT ANSWER - Pellegra: dermatitis, diarrhea, dementia
Niacin (B3) toxicity - CORRECT ANSWER - Flushing, gastrointestinal effects, liver
damage
"niacin flush"
Pyridoxine (B6) - CORRECT ANSWER - Water soluble vitamin
Hemoglobin synthesis and other functions
Part of an enzyme needed for energy metabolism
Where do we get Pyridoxine (B6)? - CORRECT ANSWER - widespread in foods
Pyridoxine (B6) toxicity - CORRECT ANSWER - Sensory neuropathy with progressive
ataxia; photosensitivity
, Pyridoxine (B6) deficiency - CORRECT ANSWER - Microcytic anemia; convulsions;
irritability
Folate/Folic acid (B9) - CORRECT ANSWER - water soluble
Coenzyme metabolism (synthesis of amino acid, heme, DNA, RNA)
Part of an enzyme needed for making DNA and new cells, especially red blood cells
Where do we get Folate/Folic acid (B9)? - CORRECT ANSWER - Leafy green vegetables
and legumes, seeds, orange juice, and liver; now added to most refined grains
Folate/Folic acid (B9) toxicity - CORRECT ANSWER - Masking of B12 deficiency
symptoms in those with pernicious anemia not receiving cyanocobalamin
Folate/Folic acid (B9) deficiency - CORRECT ANSWER - Poor growth; megaloblastic
anemia (concurrent deficiency of vitamin B12 should be suspected); impaired cellular immunity
Cobalamin (B12) - CORRECT ANSWER - water soluble vitamin
Transport/storage of folate needed for heme and cell formation and other functions, Metabolism
of fatty acids/amino acids
needed for making new cells; important to nerve function
Where do we get Cobalamin (B12)? - CORRECT ANSWER - Meat, poultry, fish,
seafood, eggs, milk and milk products; not found in plant foods
Cobalamin (B12) deficiency - CORRECT ANSWER - Pernicious anemia; neurologic
deterioration
ACTUAL Exam Questions and CORRECT
Answers
Thiamin (B1) - CORRECT ANSWER - Water-soluble vitamin
Coenzyme energy metabolism; muscle nerve action
§ Part of an enzyme needed for energy metabolism
§ Important to nerve function
Where do we get Thiamin (B1) - CORRECT ANSWER - pork, whole-grain or enriched
breads and cereals, legumes, nuts and seeds
Thiamin (B1) deficiency - CORRECT ANSWER - Beriberi!!, neuritis, edema, cardiac
failure
Riboflavin (B2) - CORRECT ANSWER - water soluble
Coenzyme energy metabolism
normal vision and skin health
Where do we get Riboflavin (B2) - CORRECT ANSWER - Milk and milk products; leafy
green vegetables; whole-grain, enriched breads and cereals
Riboflavin (B2) deficiency - CORRECT ANSWER - Photophobia, cheilosis, glossitis,
corneal vascularization, poor growth
,Niacin (B3) - CORRECT ANSWER - water soluble
Cofactor to enzymes involved in energy metabolism; glycolysis and tricarboxylic acid (TCA)
cycle synthesis
important for nervous system, digestive system, and skin health
Where do we get Niacin (B3)? - CORRECT ANSWER - Meat, poultry, fish, whole-grain
or enriched breads and cereals, vegetables (especially mushrooms, asparagus, and leafy green
vegetables), peanut butter
Niacin (B3) deficiency - CORRECT ANSWER - Pellegra: dermatitis, diarrhea, dementia
Niacin (B3) toxicity - CORRECT ANSWER - Flushing, gastrointestinal effects, liver
damage
"niacin flush"
Pyridoxine (B6) - CORRECT ANSWER - Water soluble vitamin
Hemoglobin synthesis and other functions
Part of an enzyme needed for energy metabolism
Where do we get Pyridoxine (B6)? - CORRECT ANSWER - widespread in foods
Pyridoxine (B6) toxicity - CORRECT ANSWER - Sensory neuropathy with progressive
ataxia; photosensitivity
, Pyridoxine (B6) deficiency - CORRECT ANSWER - Microcytic anemia; convulsions;
irritability
Folate/Folic acid (B9) - CORRECT ANSWER - water soluble
Coenzyme metabolism (synthesis of amino acid, heme, DNA, RNA)
Part of an enzyme needed for making DNA and new cells, especially red blood cells
Where do we get Folate/Folic acid (B9)? - CORRECT ANSWER - Leafy green vegetables
and legumes, seeds, orange juice, and liver; now added to most refined grains
Folate/Folic acid (B9) toxicity - CORRECT ANSWER - Masking of B12 deficiency
symptoms in those with pernicious anemia not receiving cyanocobalamin
Folate/Folic acid (B9) deficiency - CORRECT ANSWER - Poor growth; megaloblastic
anemia (concurrent deficiency of vitamin B12 should be suspected); impaired cellular immunity
Cobalamin (B12) - CORRECT ANSWER - water soluble vitamin
Transport/storage of folate needed for heme and cell formation and other functions, Metabolism
of fatty acids/amino acids
needed for making new cells; important to nerve function
Where do we get Cobalamin (B12)? - CORRECT ANSWER - Meat, poultry, fish,
seafood, eggs, milk and milk products; not found in plant foods
Cobalamin (B12) deficiency - CORRECT ANSWER - Pernicious anemia; neurologic
deterioration
