Ch. 10 Flashcards
what is the primary role of the b-vitamins
act as coenzymes
the first b-vitamins discovered was
thiamin
chromium assists in _____ uptake
glucose
what is false about thiamin
it is often toxic when consumed in excess
a person suffering from fatigue, muscle wasting, and nerve Andaman is likely suffering from what deficiency disease
beriberi
what is a good source of thiamin
whole and enriched cereals and grains
Wernicke-Korsakoff syndrome is associated with the decreased absorption and utilization of
thiamin
which of these nutrients is destroyed by exposure to light
riboflavin
what is not a sympton of pellagra
dizziness
which vitamin can be made from the amino acid tryptophan
niacin
what is the primary symptom of niacin toxicity
flushing
what is transamination
a key process in the creation of nonessential amino acids
Pellagra is the deficiency disease associated with ____
niacin
Pellagra was first seen in populations where the dietary staple was _____
corn
Good sources of riboflavin include _____
milk, meats, and green vegetables
The primary sources of folate in the american diet are _____
enriched ready-to-eat cereals, bread, and grain products
why is folate critical to the health of a newly conceived embryo
folate is needed for proper cell division
folate deficiency during pregnancy is associated with
pellagra
a toxicity of folate can disguise a true deficiency of _____, resulting in nerve damage
vitamin b12
vitamin b12 is essential for the proper functioning of ____ cells
nerve
high concentration of homocysteine in the blood are associated with the development of _____
heart disease
a person exhibiting symptoms of impaired work performance, general fatigue, pale skin, depressed immune function, impaired cognitive and nerve function, and impaired memory is likely suffering from _____
iron-deficiency anemia
consumption of high levels of folate supplements can mask a _____ deficiency
vitamin b12
a deficiency of _____ has been associated with convulsions and dermatitis in infants
vitamin b6
the chronic overconsumption of _____ can result in a biotin deficiency
raw egg whites
is choline a vitamin
no
a lack of dietary iodine during pregnancy is the primary cause of _____ worldwide
cretinism
Iodine is essential for the synthesis of _____ hormones
thyroid
a goiter can result from _____
too much or too little iodine in the diet
which component of the blood is essential in transporting oxygen to body cells
erythrocytes
prothrombin and factor VII are _____
proteins that are involved in the coagulation of blood
what is not a good source of vitamin K
exposure to sunlight
what kind of individual would be at risk for a vitamin K deficiency
a 30 year old with crohn’s disease
vitamin k deficiencies are rare because
intestinal bacteria produce vitamin k
the iron carrying protein that assists in the transport of oxygen into muscle cells is
myogloin
the meat factor is
a special quality found in meat, poultry, and fish that enhances iron absorption
what is not a common storage site for iron
kidneys
Celine visited her doctor to complain about a cut that bled a lot before it clotted. What deficiency might cause the bleeding?
vitamin K
what will impair iron absorption
low amounts of stomach acid
Bob’s physician has just diagnosed him with iron-deficiency anemia. What would not be good advice for Bob to utilize more dietary iron.
drinking a glass of milk with his iron supplement
insufficient intake of iron will first affect the body’s _____ levels
ferritin
what is associated with increased absorption of zinc
growth
which mineral’s absorption is enhanced greatly by vitamin c?
iron
what mineral increases insulin’s effectiveness in cells
chromium
the major dietary source of iodine in the typical american’s diet is
iodized table salt
a deficiency of _____ is the most common deficiency worldwide
iron
