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A 9-month-old boy is brought to the clinic for a routine follow-up. His mother is concerned because the patient is not yet able to sit up unsupported. He was born at term and has had muscle weakness since birth. Vital signs are normal. The patient is alert but has diminished tone. Examination shows a prominent forehead with a depressed nasal bridge. Eye examination shows epicanthal folds. Analysis of lysosomal acid hydrolases shows an increased concentration within the serum and a decreased level within the cultured skin fibroblast cells. This patient most likely has a defect in which of the following steps of enzyme production?
Fixed Cost
Costs that do not change with the level of production or sales, such as rent or salaries.
Total Expense
The sum of all costs and expenses associated with the operations of a business.
Level Of Activity
A measure of the amount of output or work performed, often used in accounting to allocate fixed costs or in operational planning.
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