Lipoprotein Metabolism

Description

Year 2 (Lipids) Quiz on Lipoprotein Metabolism, created by gina_evans0312 on 24/01/2014.
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Quiz by gina_evans0312, updated more than 1 year ago
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Created by gina_evans0312 almost 11 years ago
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Resource summary

Question 1

Question
When the LDL first binds to the receptor, what is internalised?
Answer
  • The lipoprotein
  • The bound receptor
  • The antigens

Question 2

Question
An uncoated clathrin vesicle has lost the clathrin it was previously coated with
Answer
  • True
  • False

Question 3

Question
What happens to the LDL receptors once they've been internalised?
Answer
  • They're removed the vesicle and returned to the cell surface
  • They're removed the vesicle and destroyed
  • They're removed the vesicle and altered into different receptors

Question 4

Question
How is the LDL broken down?
Answer
  • pH change
  • Salinity change
  • Inc in protease concentration

Question 5

Question
LDL's are broken down into amino acids, fatty acids and triacylglycerols
Answer
  • True
  • False

Question 6

Question
Fatty acid oxidation is done in the mitochondria
Answer
  • True
  • False

Question 7

Question
The cleavage of 2C from a fatty acid chain does what?
Answer
  • Releases oxidative energy
  • Releases 2C for substrate dependent oxidation

Question 8

Question
VDL's are created in the small intestine, chylomicrons in the liver
Answer
  • True
  • False

Question 9

Question
Name the two enzymes that allow lipids to be removed from lipoproteins for use in the cell
Answer
  • Lipoprotein lipase
  • Lecithin-Cholesterol Acetyl Transferase

Question 10

Question
Removal of lipids from fatty acids leave remenants behind in the blood
Answer
  • True
  • False

Question 11

Question
Two things can happen to these remnants, what are they?
Answer
  • Uptake into cells for conversion into other lipoproteins
  • Conversion to LDL's in the blood
  • Conversion to VDL's in the intestines

Question 12

Question
What is the role of the Overflow Pathway?
Answer
  • Conversion of LDL's into HDL's so they can be returned to the liver
  • Conversion of remnants to LDL's that stick to arterial walls
  • Conversion of Chylomicrons to VLDL
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