PSIO 420 exam 2 key

PSIO 420 exam 2 key - PSIO 420/520 practice problem set#2...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PSIO 420/520 practice problem set #2: Endocrinology and metabolism 1. Answer the following questions based on your understanding of fatty acid metabolism. a. Name the enzyme that clears circulating fats from chylomicrons. Lipoprotein Lipase b. Name the enzyme that catalyzes lipolysis of stored triglyceride. Hormone Sensitive Lipase c. What hormones activate the enzyme listed in part b in adipose tissue? List of hormones: Epinephrine/Norepinephrine, Glucagon, Cortisol, Growth Hormone d. What carrier shuttles “activated” fatty acyl CoA into the mitochondrial matrix? Carnitine e. What muscle fiber type is best suited for fatty acid metabolism? Circle one. FG FOG SO f. At the same fatty acid concentration, an endurance trained person would have a HIGHER (higher or lower) rate of ATP synthesis via fat metabolism. 2. Calculate the ATP yield for the complete oxidation of a 20-carbon fatty acid chain. Show your work! 20-carbon fatty acid chain = 9 rounds of beta-oxidation Beta oxidation total Acetyl CoA total = 10 Acetyl CoA NADH+H + total = 9 NADH+H + FADH 2 total = 9 FADH 2 10 Acetyl CoA x 12 ATP/Acetyl CoA in Kreb’s cycle = 120 ATP 9 NADH+H + x 3 ATP/NADH+H + in ETC = 27 ATP 9 FADH 2 x 2 ATP/FADH 2 in ETC = 18 ATP 165 ATP - 2 ATP (activation of the fatty acid)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/13/2008 for the course PSIO 420 taught by Professor Keen during the Spring '08 term at Arizona.

Page1 / 3

PSIO 420 exam 2 key - PSIO 420/520 practice problem set#2...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online