DIT 121 Exam 2 | 100% Correct | Verified | 2024 Version
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DIT 121
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DIT 121
DIT 121 Exam 2 | 100% Correct | Verified | 2024
Version
What are the 3 main classes of lipids? - answer -triglycerides: the most common
type of lipid in food and the body
Phospholipids: for example, in cell membranes
Sterols: include cholesterol, vitamin D, some hormones
Define and name a g...
DIT 121 Exam 2 | 100% Correct | Verified | 2024
Version
What are the 3 main classes of lipids? - answer -triglycerides: the most common
type of lipid in food and the body
Phospholipids: for example, in cell membranes
Sterols: include cholesterol, vitamin D, some hormones
Define and name a good food example for each of the following terms: Sterol: -
answer -Compound containing a four ring carbon structure with any of a variety of
side chains attached.
Example: bile acids; testosterone, adrenal hormones (cortisol)
Define and name a good food example for each of the following terms: Essential
Fatty Acids, - answer -Fatty acids that the body cannot synthesize in amounts
sufficient to meet physiological needs
Define and name a good food example for each of the following terms: EPA: -
answer -Essential Fatty Acids - eicosapentaeonic acid; omega 3 fatty acids
Breast milk; fatty fish
Define and name a good food example for each of the following terms: DHA: -
answer -Omega 3 fatty acids
Seen in fatty fish
Define and name a good food example for each of the following terms: ALA: -
answer -Alpha linolenic acids (omega 3 fatty acids)
Flaxseeds; walnuts
What is glycolysis? - answer -The metabolic breakdown of glucose to pyruvate.
Does not require oxygen.
What type fats have the worst effect on blood lipid levels and risk for heart
disease? - answer -Trans Fatty Acids are the worst form of fat.
, Where does most chemical digestion and absorption of fats occur? - answer -small
intestine
10. What role does bile have in fat digestion? What do lipases from the pancreas
do to digest fats? - answer -- Emulsifies fat, breaks fat into small fat globules so
enzymes can act better.
- Break triglycerides into glycerol and fatty acids.
10. Which lipids are absorbed without further digestion? - answer -- Cholesterol,
fatty acids, glycerol, medium chain triglycerides (MCT), monoglycerides
14. What are the main functions of lipids in the body?
- The omega-3 fatty acids DHA and EPA are important for:
- Normal growth
- Brain development
- Cognitive development
- Health of retinas in eyes
- Visual acuity
- Provide energy
- Part of adipose tissue: Energy reserve, insulation, shock absorber
15. What is the role of HDL? How does it affect heart disease risk? - answer -
Liver makes it, remove cholesterol from the cells and carry it back to the live for
recycling or disposal. Lowers the effect of heart disease.
15. What are DHA and EPA? What do these do in the body? (p. 149) - answer --
DHA: an omega-3 polyunsaturated fatty acid with 22 carbons and six double
bonds; present in fatty fish and synthesized in limited amounts in the body from
linolenic acid.
- EPA: an omega-3 polyunsaturated with 20 carbons and five double bonds;
present in fatty fish and synthesized in limited amounts in the body from linolenic
acid.
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