A deficiency of ____ produces a goiter in humans.
A) calcium
B) iodine
C) magnesium
D) manganese
E) zinc
Correct Answer:
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Q19: Place the five steps of digestion in
Q20: The _ of a bird's digestive system
Q21: What is the purpose of the watery
Q22: Deficiencies of _may result in muscular weakness.
A)
Q23: Heartburn is caused by the _.
A) gastroesophageal
Q25: Food is formed into a bolus in
Q26: What function does the presence of alkaline
Q27: Of the 13 essential vitamins, _ are
Q28: The _ digestive structures in humans secrete
Q29: The pH of stomach acids is usually
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