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Year 2 (Lipids) Quiz on Lipoprotein Metabolism, created by gina_evans0312 on 24/01/2014.

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gina_evans0312
Created by gina_evans0312 almost 11 years ago
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Lipoprotein Metabolism

Question 1 of 12

1

When the LDL first binds to the receptor, what is internalised?

Select one or more of the following:

  • The lipoprotein

  • The bound receptor

  • The antigens

Explanation

Question 2 of 12

1

An uncoated clathrin vesicle has lost the clathrin it was previously coated with

Select one of the following:

  • True
  • False

Explanation

Question 3 of 12

1

What happens to the LDL receptors once they've been internalised?

Select one of the following:

  • 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

Explanation

Question 4 of 12

1

How is the LDL broken down?

Select one of the following:

  • pH change

  • Salinity change

  • Inc in protease concentration

Explanation

Question 5 of 12

1

LDL's are broken down into amino acids, fatty acids and triacylglycerols

Select one of the following:

  • True
  • False

Explanation

Question 6 of 12

1

Fatty acid oxidation is done in the mitochondria

Select one of the following:

  • True
  • False

Explanation

Question 7 of 12

1

The cleavage of 2C from a fatty acid chain does what?

Select one or more of the following:

  • Releases oxidative energy

  • Releases 2C for substrate dependent oxidation

Explanation

Question 8 of 12

1

VDL's are created in the small intestine, chylomicrons in the liver

Select one of the following:

  • True
  • False

Explanation

Question 9 of 12

1

Name the two enzymes that allow lipids to be removed from lipoproteins for use in the cell

Select one or more of the following:

  • Lipoprotein lipase

  • Lecithin-Cholesterol Acetyl Transferase

Explanation

Question 10 of 12

1

Removal of lipids from fatty acids leave remenants behind in the blood

Select one of the following:

  • True
  • False

Explanation

Question 11 of 12

1

Two things can happen to these remnants, what are they?

Select one or more of the following:

  • Uptake into cells for conversion into other lipoproteins

  • Conversion to LDL's in the blood

  • Conversion to VDL's in the intestines

Explanation

Question 12 of 12

1

What is the role of the Overflow Pathway?

Select one of the following:

  • 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

Explanation

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