BIOD 121 Portage module 4|Questions
with Verified Answers
thiamin (B1) - ✔coenzyme for carbohydrates, promotes glucose metabolism
pork, legumes, milk, orange juice, organ meats, and whole and enriched grain
Thiamin deficiency - ✔Beriberi: weakness, loss of appetite, irritability, poor arm and
leg coordination, an enlarged heart, and severe edema (where white rice is common)
Riboflavin (B2) - ✔coenzyme for energy metabolism that requires oxygen
vitamin and mineral metabolism
very sensitive to light
* enriched grains, meat, eggs, and milk products
Riboflavin deficiency - ✔ariboflavinosis (rare)
, glossitis (inflammation of the tongue), cheilosis (cracks around the mouth), sun sensitivity, and
confusion
niacin (B3) - ✔nicotinic acid or nicotinamide
release of energy from carbohydrates, proteins, and fats
make 50% req'd niacin from tryptophan, an amino acid.
* Meat, enriched breakfast cereals, poultry, fish, nuts, and peanuts
niacin deficiency - ✔pellagra: dermatitis, diarrhea, dementia, death (4Ds)
excess niacin: flushing
Pantothenic Acid (B5) - ✔component of coenzyme A or
CoA important in fatty acid production
* chicken, pork, fish, egg yolks, yogurt, legumes, avocados, and sweet potatoes
B-6 - ✔3 chemical forms-pyroxidine
key role in protein and amino acid metabolism; enables cells to make nonessential amino
acids by removing the nitrogen group
important for the synthesis of white and red blood cells and for neurotransmitter synthesis
pyroxidine deficiency - ✔microcytic hypochromic anemia: small, oxygen-deficient red
blood cells
CNS disturbance, seizures
Biotin (B7) - ✔aids in the production of glucose and fatty acids, DNA synthesis, and amino
acid metabolism
* cauliflower, liver, peanuts, cheese, and egg yolks (uncooked whites contain avidin
which prevents absorption)