Chapter·BiochemistryAmino Acid Metabolism

Homocystinuria and Methionine MetabolismDownloads

10Questions
10Flashcards
2Tables & Flowcharts

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Sample Questions

1

A young boy with a thin build and long fingers presents with diminished vision. On examination, subluxation of the lens is observed, and cystathionine synthase deficiency is detected. Which amino acid should the patient be supplemented with?

ATyrosine

BSerine

CCysteine

DMethionine

EGlycine

2

A patient with homocystinuria presents with ectopia lentis (dislocation of the lens). Which vitamin should be supplemented?

AVitamin B12

BVitamin B6

CThiamine

DVitamin B9 (Folate)

EVitamin C

3

In the context of homocystinuria, which direction does the lens typically subluxate?

AInferotemporal

BInferonasal

CSuperonasal

DSuperotemporal

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