Set 12 Lipoproteins Flashcards Preview

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Flashcards in Set 12 Lipoproteins Deck (24):
1

What are the lipoproteins?

chylomicron, VLDL, LDL, and HDL

2

What is the source for chylomicron?

intestinal mucosa

3

What organ is the source for VLDL, LDL, and HDL?

liver

4

What is the bad lipoprotein?

LDL

5

What is the function of chylomicron?

transports dietary lipids to the body

6

What is the function of VLDL?

transports endogenous lipids from liver to body

7

What is the function of LDL?

transports cholesterol from the liver to the body

8

What is the function of HDL?

removes excess "free" cholesterol from the blood

9

Where does beta oxidation occur?

mitochondria

10

How does beta oxidation work?

cuts chain two carbons at a time to make acetyl CoA for Kreb's

11

What does beta oxidation require? (To drive a FA in)

carnatine

12

What does beta oxidation produce?

1 Acetyl CoA, reduces 1 FAD to FADH2, reduces 1 NAD to NADH

13

What is the final piece of beta oxidation when it starts with an odd numbered fatty acid chain?

propionyl CoA (3 carbons long)

14

What is ketogenesis?

forms ketone bodies as a by product of beta oxidation

15

What increases ketogenesis?

fasting, low carb diet, diabetes mellitus, and pregnancy (esp 3rd tri)

16

Where are ketones found?

breath and urine

17

What is the primary substrate for lipogenesis?

acetyl CoA

18

Where does lipogenesis occur?

cytoplasma

19

What does lipegenesis produce?

fatty acids, two Cs at a time from Acetyl CoA

20

What is the most important intermediate of lipogenesis?

malonyl CoA

21

What does lipogenesis require?

Acetyl CoA, CO2 and NADPH

22

What stimulates lipogenesis?

ATP and insulin

23

What inhibits lipogenesis?

epinepherine and glucagon

24

Where does lipid digestion occur?

mouth and small intestine (lingual lipase)