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Old 11-07-2012
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Biochemistry Enzyme working on Chylomicron

A healthy volunteer participates in a nutritional research study. After participants ingest a very fatty meal, serum samples are taken at 1 hour and 3 hours. The average diameter of the chylomicrons is measured, showing an average chylomicron diameter of 500 nm at 1 hour, which decreases to an average diameter of 150 nm at 3 hours. At which of the following locations is the enzyme responsible for this change most likely located?

A. Adipocytes
B. Endothelial cells
C. Enterocytes
D. Hepatocytes
E. Myocytes
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Old 11-07-2012
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Default b

endothelial cells
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Old 11-07-2012
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Default my answer :)

B. Endothelial cells - lipoprotein lipase
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Default C: Enterocytes

Quote:
Originally Posted by abcxyz View Post
A healthy volunteer participates in a nutritional research study. After participants ingest a very fatty meal, serum samples are taken at 1 hour and 3 hours. The average diameter of the chylomicrons is measured, showing an average chylomicron diameter of 500 nm at 1 hour, which decreases to an average diameter of 150 nm at 3 hours. At which of the following locations is the enzyme responsible for this change most likely located?

A. Adipocytes
B. Endothelial cells
C. Enterocytes
D. Hepatocytes
E. Myocytes
They are produce by absorptive cell of the small intestine (Enterocytes )

Last edited by IMGdoctor; 11-07-2012 at 04:22 AM.
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Old 11-07-2012
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I go with endothelial cells too..........thanx.
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Old 11-07-2012
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endothelial cells
it's lipoprotien lipase
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Default where did you encounter this one?

the correct answer lipoptn lipase in adipose tissue and muscles.....adipocytes and myocytes ...thx
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B. lip lipase that is found in endothelial cells of vasculature of adipose and muscular tissue
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Old 11-07-2012
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B. endothelial cells-----lipoprotein cells.....

@imgdoctor ---if the question asks abt. chylomicron or apoB48--then it's enterocyte....

thanks
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Default You are right !

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Originally Posted by venky2600 View Post
B. endothelial cells-----lipoprotein cells.....

@imgdoctor ---if the question asks abt. chylomicron or apoB48--then it's enterocyte....

thanks
I read one more time and you are right the Qx is not about chylomicron!
Sorry!
Thanks!
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Old 11-07-2012
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Quote:
Originally Posted by IMGdoctor View Post
I read one more time and you are right the Qx is not about chylomicron!
Sorry!
Thanks!
hey,why feeling sorry for that?.if we do mistake here ,we can rectify it in exam.
i did this mistake you did in one of my recent exam i did,so got cleared abt it...
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Old 11-08-2012
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Quote:
Originally Posted by asakr View Post
the correct answer lipoptn lipase in adipose tissue and muscles.....adipocytes and myocytes ...thx
I got this from Kaplan's online Qbank (which, I realized later, has a lot of questions from Kaplan Qbank pdf)
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  #13  
Old 11-08-2012
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The answer is B - Endothelial cells.

Lipoprotein lipase is found in the endothelial cells of vasculature of adipose and muscular tissue. - as acr2503 said.
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