Lecture 13 - Digestion and Absorption of Dietary Lipids Flashcards Preview

Fuel Metabolism - 2016 > Lecture 13 - Digestion and Absorption of Dietary Lipids > Flashcards

Flashcards in Lecture 13 - Digestion and Absorption of Dietary Lipids Deck (15)
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1

__________ are metabolic fuel and a building block for phospholipids and sphingolipids. A. Triglycerides B. Ketones C. Cholesterol D. Fatty acids

D

2

______ are storage and major transport forms of fatty acids. A. Triglycerides B. Ketones C. Cholesterol D. Fatty acids E. Sphingolipids

A

3

______ are soluble metabolic fuels for skeletal muscle, heart, kidney, and brain. A. Triglycerides B. Ketones C. Cholesterol D. Fatty acids E. Sphingolipids

B

4

_________ are surface antigens and a structural component of membranes. A. Triglycerides B. Ketones C. Cholesterol D. Fatty acids E. Sphingolipids F. Phospholipids

E

5

__________ is the precursor for bile acids, vitamin D, and the steroid hormones.

Cholesterol

6

How does an increase in insulin affect the interconversion between acetyl-CoA and fatty acids?

Insulin promotes the synthesis of FAs (and the storage of lipids).

7

How does an increase in glucagon affect the interconversion between acetyl-CoA and fatty acids?

Glucagon promotes oxidation of lipids (breakdown to acetyl CoA).

8

_________ is the MAJOR enzyme that degrades TG in the intestine; it requires colipase. A. Pancreatic lipase B. Cholesterol esterase C. Phospholipase A

A

9

_________ catalyzes the conversion from phospholipid to lysophospholipid and FA. A. Pancreatic lipase B. Cholesterol esterase C. Phospholipase A

C

10

__________ catalyzes the conversion from cholesterol esters to cholesterol and FA. A. Pancreatic lipase B. Cholesterol esterase C. Phospholipase A

B

11

What is the primary feature of bile acids that make them good emulsification agents?

Amphipathic structure

12

What enzyme reforms fatty acyl-CoA to "activate it" and requires ATP? A. Fatty acyl-CoA transferase B. Fatty acyl-CoA synthetase C. ACAT D. Lipoprotein lipase

B

13

Which enzyme catalyzes reformation of TG? A. Fatty acyl-CoA transferase B. Fatty acyl-CoA synthetase C. ACAT D. Lipoprotein lipase

A

14

Which enzyme catalyzes reformation of cholesterol esters? A. Fatty acyl-CoA transferase B. Fatty acyl-CoA synthetase C. ACAT D. Lipoprotein lipase

C - short for Acyl CoA:cholesterol acyltransferase

15

Insulin promotes __________ of fatty acids.

A. Synthesis

B. Storage

C. Mobilization

D. Oxidation

A -  insulin promotes the synthesis of fatty acids and the storage of lipidss.