Metabolism — Flashcards

Flashcard 181: _____ is a plasma transport protein for T3/T4

Answer: Thyroxin-binding globulin (TBG)

Extra: T4 and T3 bind to the transport proteins thyroxin-binding globulin (TBG), thyroxin-binding pre-albumin (TBPA), and albumin, for transportation in the bloodstream.

Flashcard 182: Can noncompetitive inhibitors be overcome by increasing the substrate concentration, [S]? _____

Answer: No

Flashcard 183: The symptoms of Lesch-Nyhan syndrome may be remembered with the mnemonic "HGPRT": H: _____ G: Gout P: Pissed off (aggression, self-mutilation) R: Retardation (intellectual disability) T: dysTonia

Answer: Hyperuricemia

Flashcard 184: Does Crigler-Najjar syndrome result in unconjugated or conjugated hyperbilirubinemia? _____

Answer: Unconjugated

Extra: * due to absence of UDP-glucuronyltransferase, which normally converts UCB -> CB

Flashcard 185: Glycogen synthase is inhibited (inactivated) by _____ and glucagon

Answer: epinephrine

Flashcard 186: Folate may be converted to _____ via the enzyme dihydrofolate reductase

Answer: dihydrofolate

Flashcard 187: Each subunit of hemoglobin contains a(n) _____ moiety, which is a(n) iron-binding porphyrin, and a polypeptide chain

Answer: heme

Flashcard 188: Vitamin C is found in _____ and _____

Answer: fruits

Flashcard 189: Vitamin _____ is also known as ascorbic acid

Answer: C

Flashcard 190: _____ (inactive) is activated to elastase (active) via trypsin

Answer: Proelastase