What are the roles of LDL and HDL? Which one is good cholesterol, ...

[j.rubin]

What are the roles of LDL and HDL? Which one is good cholesterol, which one is bad?

Question 2

Cell membranes, which form an effective barrier to the passage of ions and other components into and out of the cell, are composed of a lipid bilayer.
 a. True
 b. False
  Indicate whether the statement is true or false

[Mochi]

Answer to Question 1

Low density lipoprotein (LDL) is a protein that carries cholesterol from the site where it is synthesized to the rest of the body. High density lipoprotein (HDL) carries unused cholesterol to the liver where it is subject to degradation. Since build up of cholesterol in the arteries is a bad thing, LDL is bad cholesterol, and HDL is good.

Answer to Question 2

TRUE

[j.rubin]

Both answers were spot on, thank you once again

[Mochi]

Great! Please up vote