drk1980
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A kaplan simulated online test question.
A nutritionist is evaluating the effects of a fat-free diet from birth in rats. The animals are killed at 1 year of age and various organs analyzed for lipid compositions. Which of the following lipids would most likely be missing from this analysis?
A. Cholesterol
B. Phospholipids
C. Prostaglandins
D. Sphingolipids
E. Triglycerides
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| reet
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PGs
Edited by reet on 11/29/05 - 10:39 PM
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| reet
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plz explain answer if not TG's
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| drk1980
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answer says PGs...no explanation with me!
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| reet
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cuz FAT IS ESSENTIAL in the production of prostaglandins
good question drk
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| drk1980
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thanks for ur participation!
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| msyamp
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i dint get the answer. is it trigliserides?
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| msyamp
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can please explain a bit more?
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| mildus
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I don't understand. Why PGs when we know that AA is normaly present in our membranes like phospholipids...
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| sturge_weber
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ya me too confused, thought tgs would be the answer
please explain if someone knows
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| reet
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even i guessed TG's ,,later on i changed it to PG's....cuz DRK1980 answer is PG'S GIVEN IN KAPLAN SIMULATED EXAM.
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| drk1980
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Anyone with the kaplan simulated test on CD, please post the explanation in here.
My inference on the Q is, when it says 'fat-free diet' it indicates that no essential fats were present in the body. We know that linoleic acid(omega-6 family) is an essential fatty acid and is a precursor of arachidonic acid, which in turn is a precursor to PGs, TXA2, LTs etc.
A fat free diet wudnt drastically affect triglycerides coz glucose(carbs) is a source of tht.
Any further inputs welcome.
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