Q112. Approximately how much of the filtered urate is reabsorbed in the proximal tubule via URAT1?

Q113. Which condition increases urate retention in the kidneys?

Q114. Hypouricemia (low uric acid) can be caused by:

Q115. A common complication of chronic hyperuricemia is:

Q116. Each gram of Hemoglobin (Hb) contains how much iron?

Q117. Heme is chemically defined as a:

Q118. In Step 1 of heme synthesis, ALA synthase requires which cofactor?

Q119. ALA dehydratase, which forms PBG, is inhibited by which toxic metal?

Q120. PBG-deaminase is the enzyme responsible for converting PBG into:

Q121. Uroporphyrinogen decarboxylase converts UPG-III into:

Q122. The conversion of CPG-III to PPG-III occurs in the mitochondria and requires:

Q123. Colored porphyrins are formed during which step?

Q124. The final step of heme formation (PP-III + Fe2+) is catalyzed by:

Q125. Most porphyrias are inherited in which pattern?

Q126. Porphyrias are primarily classified into:

Q127. Which of the following is characteristic of Acute Intermittent Porphyria (AIP)?

Q128. The most common porphyria, which presents with photosensitivity, is:

Q129. Hereditary Coproporphyria is caused by a defect in which enzyme?

Q130. Erythropoietic Protoporphyria involves a defect in Ferrochelatase and results in:

Q131. The total body iron in an adult is approximately:

Q132. What percentage of dietary iron is typically absorbed?