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Exam (elaborations)

NTR301 Exam Study Guide with Complete Solution

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  • NTR 301

NTR301 Exam Study Guide with Complete Solution define lipid - Ans:-generally insoluble in H2O, always soluble in organic solvents describe basic structure of triglyceride and how they differ from eachother. - Ans:-All TGs have a backbone of glycerol w/ 3 fatty acids attached, one to each to TGs...

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  • October 23, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NTR 301
  • NTR 301
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©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




NTR301 Exam Study Guide with
Complete Solution


define lipid - Ans:✔✔-generally insoluble in H2O, always soluble in organic solvents


describe basic structure of triglyceride and how they differ from eachother. - Ans:✔✔-All TGs have a

backbone of glycerol w/ 3 fatty acids attached, one to each to TGs 3 carbon atoms. They differ by

differences in the fatty acids that each contain.


list three ways in which fatty acids can differ from eachother - Ans:✔✔-* The # of carbon atoms (4-22)


*# of double bonds (degree of saturation)


* The position of the 1st double bond (only applies to polyunsaturated fats)


explain what it means for a fatty acid to be saturated, monounsaturated, and polyunsaturated. -

Ans:✔✔-Saturated-full of hydrogen atoms (no double bonds)


Monosaturated-has 1 double bond


Polyunsaturated- has 2-6 double bonds




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, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




identify the structural ways in which the fatty acids in fish oil and breast milk are different from those in

other food sources. - Ans:✔✔-Fatty acids for fish oil and breast milk are called omega 3/n-3 where the

first double bond is on carbon 3


predict how the degree of fatty acid saturation affects the physical characteristics of the triglycerides in

which they're found - Ans:✔✔-The more unsaturated fatty acids a triglyceride has, the more likely it is to

be an oil @ room temp...The more saturated fatty acids a TG has, the more likely it is to be a fat at room

temp (stacking occurs)


explain what it means for a triglyceride to be saturated, monounsaturated, and polyunsaturated, give

examples of each type and provide the technical difference between a "fat" and an "oil" - Ans:✔✔-

Saturated-full of hydrogen atoms (no double bonds) ( lard, palm oil, beef tallow, butter fat, palm kernel,

& coconut oil)


Monosaturated-has 1 double bond (canola (rapeseed) olive, and peanut oil)


Polyunsaturated- has 2-6 double bonds (safflower, sunflower, corn, & soybean (veggie) oil)




more likely to be a fat if it has more saturated fatty acids


more likely to be an oil if it has more unsaturated fatty acids




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