Metabolism — Flashcards

Flashcard 1451: What does the carrier molecule ATP carry in its activated form? _____

Answer: Phosphoryl groups

Flashcard 1452: Which form of C5 convertase is produced via the lectin and classic complement pathways?

Answer: C4b2a3b

Flashcard 1453: Ketogenesis occurs in prolonged starvation and ketoacidosis due to the depletion of ________, which is used for gluconeogenesis and thus unavailable for the TCA cycle.

Answer: Oxaloacetate

Extra: In starvation and diabetic ketoacidosis (DKA), oxaloacetate (OAA) is consumed for gluconeogenesis. This depletion of OAA prevents Acetyl-CoA from entering the TCA cycle, shunting it instead into the production of ketone bodies.

Flashcard 1454: Deamination of guanine makes _____

Answer: xanthine

Flashcard 1455: _____ (inactive) is activated to chymotrypsin (active) via trypsin

Answer: Chymotrypsinogen

Flashcard 1456: How much energy (kcal) can be produced from 1g of alcohol? _____

Answer: 7 kcal

Flashcard 1457: Dephosphorylation of glycogen synthase causes enzyme _____ (activation/inactivation)

Answer: activation

Flashcard 1458: Thiamine pyrophosphate (B1) is a cofactor for the enzyme _____ (amino acid metabolism)

Answer: branched-chain ketoacid dehydrogenase

Flashcard 1459: Which insulin-independent transporter is found in the brain and placenta only?_____

Answer: GLUT3

Flashcard 1460: A _____ enzyme relocates a functional group within a molecule

Answer: mutase