A baby is born without the ability to make chief cells. What would be the best type of diet for this baby?
A. a low-fat diet
B. a diet low in minerals and vitamins
C. a diet low in complex carbohydrates such as starch
D. a diet low in protein
E. a diet low in simple sugars such as glucose and fructose
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content
· What do you know about the function of chief cells? What other information is related to the question?
Choose Answer
· Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
D. a diet low in protein
Clarify Question
· What is the key concept addressed by the question?
o The question asks about the function of chief cells.
· What type of thinking is required?
o You are being asked to apply your knowledge about the function of chief cells.
Gather Content
· What do you know about the function of chief cells? What other information is related to the question?
o The stomach contains a third layer of smooth muscle for churning food and mixing it with gastric juice, an acidic secretion of the tubular gastric glands of the mucosa. These exocrine glands contain three kinds of secretory cells: mucus-secreting cells, parietal cells, which secrete hydrochloric acid (HCl), and chief cells, which secrete pepsinogen, the inactive form of the protease (protein-digesting enzyme) pepsin.
Choose Answer
· Given what you now know, what information is most likely to produce the correct answer?
o Pepsin is used to digest proteins. If a baby cannot make chief cells then they will not be able to secrete pepsin into their stomach and will not be able to digest proteins. So they should be placed on a low protein diet. Pepsin is not used to digest carbohydrates or lipids.
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
o This question asked you to apply your knowledge about the function of chief cells. If you got the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you think that pepsin is used to digest carbohydrates or lipids? Did you think that chief cells were involved in nutrient absorption?
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