Biology Forum › Community › General Discussion › cholesterol problem!easy please help!
- AuthorPosts
- May 8, 2010 at 11:48 pm #13286
shiu1ParticipantCholesterol is an important component of cell membranes in animals. Different
animals have different average concentrations of cholesterol in their membranes.
Provides a few examples and explain how increasing the concentration of cholesterol in a
membrane affects the physical properties of the membrane.thanks in advance
- May 8, 2010 at 11:49 pm #99635shiu1Participant
What is meant by the term "good cholesterol" and the term "bad cholesterol" in the
context of preventative medicine? - May 9, 2010 at 6:30 am #99641JackBeanParticipant
if is it so easy, why don’t you find it on the internet? 🙄
- May 9, 2010 at 3:27 pm #99648Streaker87Participant
Hi!
"Bad" cholesterol ist also called "HDL" (high density lipoprotein) und "good" is used for "LDL" (low density lipoprotein).
quote :Provides a few examples and explain how increasing the concentration of cholesterol in a
membrane affects the physical properties of the membrane.Because Cholesterol is such a big molecule, it needs more space than normal membraneproteins. This makes the membrane more fluid and smooth, even the quantity of cholesterol, of course. The more, the smoother. For example, in cold regions bacteria have more cholesterol in their membrane, otherwise they would freeze.
- May 13, 2010 at 9:50 am #99701JackBeanParticipantquote Streaker87:“Bad” cholesterol ist also called “HDL” (high density lipoprotein) und “good” is used for “LDL” (low density lipoprotein).
Better HDL is also called "bad" ch. and LDL "good" cholesterol.
quote Streaker87:Because Cholesterol is such a big molecule, it needs more space than normal membraneproteins. This makes the membrane more fluid and smooth, even the quantity of cholesterol, of course. The more, the smoother. For example, in cold regions bacteria have more cholesterol in their membrane, otherwise they would freeze.Cholesterol is definitely not a big molecule, especially not bigger than proteins!!!
Contrary, it’s rigid and thus in higher concentrations makes the membranes less fluid! - May 14, 2010 at 6:35 pm #99725Streaker87Participant
You are right! Sorry.
Of course, it’s not as big as other proteins. I meant membranelipids (phospholipids).
Probably I mixed the functions with unsaturated phophsolipids.
- May 15, 2010 at 7:21 am #99730JackBeanParticipant
well, it’s not even bigger than phospholipids. At least when talking about length. Just the tail is into the middle, where are the flexible ends of other fatty acids. Anyway, not even all fatty acids (phospholipids, if you want) are of the same length 😉
- May 16, 2010 at 12:04 pm #99746Streaker87Participantquote Streaker87:“Bad” cholesterol ist also called “HDL” (high density lipoprotein) und “good” is used for “LDL” (low density lipoprotein
Aehm, it’s the other way round:
LDL = "bad"
HDL = "good"Sry, again :-/ Shame on me.
- AuthorPosts
You must be logged in to reply to this topic.
