Exam 10: Water-Soluble Vitamins

Vegans have difficulty obtaining adequate amounts of _____ in the diet.

The liver typically contains several years’ worth of stores of which water-soluble vitamin?

Riboflavin is typically found as one of its coenzymes, NADPH.

What protein transports vitamin B₁₂ in the portal blood to the liver?

Use the following case study (10-A) to answer questions Case Study 10-A: John is a 52-year-old factory worker.He has been admitted to the hospital and presents with muscle weakness and inflammation of his mouth.He is a bit confused and states that he isn't drinking now although he has a history of alcohol abuse.He has lost quite a bit of weight in the last six months, and his dietary intake has been poor.He was laid off a year ago but he is back to work part-time.Further testing has been ordered to determine the cause for concern and confirm the diagnosis. -What might be another sign that the MD may report upon examining John, or a symptom that you would expect John to complain of?

The vitamin deficiency _____ is characterized by cheilosis, stomatitis, glossitis, muscle weakness, and confusion.

Where are most water-soluble vitamins absorbed?

_______________ is involved in energy metabolism, the electron transport chain, synthesis of fatty acids and proteins, metabolism of vitamin C and folate, glucose homeostasis, and cholesterol metabolism.

Which vitamin can be converted to a coenzyme that is needed to activate vitamin B₆?

When should you consider taking a supplement?

What the coenzyme form of vitamin B₆?

_______________ is involved in the metabolism of proteins and amino acids; the synthesis of neurotransmitters and hemoglobin; glycogenolysis; and regulation of steroid hormone function.

Along with whole grains, pork is an excellent source of thiamin.

Which vitamin is required by the enzyme that converts pyruvate to oxaloacetate, a key step in gluconeogenesis?

_______________ is involved in energy metabolism; synthesis of DNA, RNA, and NADPH+H⁺; and nerve function.

Why might someone diagnosed with a vitamin B₆ deficiency be fatigued? Explain.

Maternal supplementation of which vitamin decreases the risk of neural tube defects in some women?

Use the following case study (10-A) to answer questions Case Study 10-A: John is a 52-year-old factory worker.He has been admitted to the hospital and presents with muscle weakness and inflammation of his mouth.He is a bit confused and states that he isn't drinking now although he has a history of alcohol abuse.He has lost quite a bit of weight in the last six months, and his dietary intake has been poor.He was laid off a year ago but he is back to work part-time.Further testing has been ordered to determine the cause for concern and confirm the diagnosis. -What food(s) would provide the most significant source of the vitamin missing in his diet?

There are two classes of vitamins from a solubility standpoint, water-soluble and fat-soluble.

Glossitis is inflammation of the whole mouth.