Biochemistry Quiz#5 Collagen and Metabolism

1. A 4-year-old boy is brought to the clinic due to multiple bone fractures following minor falls and a history of blue sclerae. An image of a patient with a similar condition is shown. Genetic testing reveals a mutation affecting collagen synthesis. This child most likely has a mutation affecting which type of collagen? 

Question 1 of 5

2. Which of the following amino acids is most abundant in the primary structure of collagen and is essential for its triple helix formation? 

Question 2 of 5

3. Hydroxylation of proline and lysine residues in collagen synthesis is crucial for stabilizing the triple helix structure. This process requires which of the following co-factors? 

Question 3 of 5

4. A newborn presents with hyperflexible joints, hyperelastic skin, and easy bruising. Genetic testing indicates a defect in collagen processing. This condition is most likely due to a defect in: 

Question 4 of 5

5. A patient with Menkes disease exhibits kinky hair, developmental delay, and failure to thrive. This condition is associated with a defect in copper metabolism affecting which of the following steps in collagen synthesis? 

Question 5 of 5


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