Lipid chemistry
.
.
.
Organized
MCQ Compilation
.
.
.
Dr. Mohamed Khomsi
Fb: محمد الخمسي.د
october / 2018
1
, Previous Years
Mufadala 3:
1. All of the following apply to lipids except (3 مفاضلة/ ) نصفي
a) Supply the body with fat soluble vitamins (ADE&K)
b) Control body homeostasis
c) Thermal insulator
d) Essential constituent of cellular & not subcellular membrane
e) Important constituent of the nervous system
2. All the following are true about lipid function except: (3 مفاضلة/ ) نصفي
a) Glycerophosphosphatides – membrane
b) Steroids – membranes , sex hormones
c) Sphingolipids – membrane, nerve cells
d) Waxes – structure, water repellant & receptors
e) Triglycerols (TAGs).. animal fats & plant oils
3. All of the following apply to lipids except: (3 مفاضلة/ ) نصفي
a) heterogeneous group of inorganic compounds
b) related by their physical rather than by their chemical properties
c) soluble in non-polar solvent ether , chloroform & benzene
d) insoluble in water
e) hydrophobic
4. Which of the fatty acids would exhibit the lowest melting temperature : (3 مفاضلة/ ) نهائي
a) Linolenic
b) Linoleic
c) Oleic
d) Stearic
e) Plamitoleic
5. Arachidonate has 20 carbon atoms with …. Double bonds (3 مفاضلة/ ) نصفي
a) 2
b) 3
c) 4
d) 5
e) 6
6. Which of the following is omega 3 polyunsaturated fatty acid (3 مفاضلة/ ) نهائي
a) Linoleic acid
b) Gama Linolenic acid
c) Alpha Linolenic acid
d) Oleic acid
e) Stearic acid
2
, 7. In humans a dietery essential fatty acid is (3 مفاضلة/ ) نهائي
a) Palmitic acid
b) Steric acid
c) Oleic acid
d) Linoleic acid
e) Palmitolic acid
8. The emulsifier molecule is : (3 مفاضلة/ ) نصفي
a) Aliphatic
b) Amphipathic
c) Hydrophobic
d) Hydrophilic
e) Polar
9. Sphingomyelin contains all of the following except: (3 مفاضلة/ ) نصفي
a) Sphingomyelin
b) Fatty acid
c) Amino group
d) Choline
e) Glucose
10. Structure characteristic of the Sphingomyelin include (3 مفاضلة/ ) نهائي
a) Ceramide & Sphingosine
b) Ceramide & phosphoryl choline
c) Sphingosine& phosphoryl serine
d) Ceramide , inositol & phosphatidic acid
e) Sphingosine ethanolamine & phosphatidic acid
11. Phospholipids are important constituent of cell membrane because: (3 مفاضلة/ ) نهائي
a) They have glycerol
b) They can form bilayers in water
c) They have both polar & non polar portions
d) They combine covalently with proteins
e) all of the above
12. Phospholipids are (3 مفاضلة/ ) نصفي
a) Gangliocides
b) Simple lipids
c) Cerebrocides
d) Compounds lipids
e) Steroids
13. Triglycerides are (3 مفاضلة/ ) نهائي
a) Heavier than water
b) Major constituent of membrane
c) Non-polar
d) Stored predominantly in liver
3
.
.
.
Organized
MCQ Compilation
.
.
.
Dr. Mohamed Khomsi
Fb: محمد الخمسي.د
october / 2018
1
, Previous Years
Mufadala 3:
1. All of the following apply to lipids except (3 مفاضلة/ ) نصفي
a) Supply the body with fat soluble vitamins (ADE&K)
b) Control body homeostasis
c) Thermal insulator
d) Essential constituent of cellular & not subcellular membrane
e) Important constituent of the nervous system
2. All the following are true about lipid function except: (3 مفاضلة/ ) نصفي
a) Glycerophosphosphatides – membrane
b) Steroids – membranes , sex hormones
c) Sphingolipids – membrane, nerve cells
d) Waxes – structure, water repellant & receptors
e) Triglycerols (TAGs).. animal fats & plant oils
3. All of the following apply to lipids except: (3 مفاضلة/ ) نصفي
a) heterogeneous group of inorganic compounds
b) related by their physical rather than by their chemical properties
c) soluble in non-polar solvent ether , chloroform & benzene
d) insoluble in water
e) hydrophobic
4. Which of the fatty acids would exhibit the lowest melting temperature : (3 مفاضلة/ ) نهائي
a) Linolenic
b) Linoleic
c) Oleic
d) Stearic
e) Plamitoleic
5. Arachidonate has 20 carbon atoms with …. Double bonds (3 مفاضلة/ ) نصفي
a) 2
b) 3
c) 4
d) 5
e) 6
6. Which of the following is omega 3 polyunsaturated fatty acid (3 مفاضلة/ ) نهائي
a) Linoleic acid
b) Gama Linolenic acid
c) Alpha Linolenic acid
d) Oleic acid
e) Stearic acid
2
, 7. In humans a dietery essential fatty acid is (3 مفاضلة/ ) نهائي
a) Palmitic acid
b) Steric acid
c) Oleic acid
d) Linoleic acid
e) Palmitolic acid
8. The emulsifier molecule is : (3 مفاضلة/ ) نصفي
a) Aliphatic
b) Amphipathic
c) Hydrophobic
d) Hydrophilic
e) Polar
9. Sphingomyelin contains all of the following except: (3 مفاضلة/ ) نصفي
a) Sphingomyelin
b) Fatty acid
c) Amino group
d) Choline
e) Glucose
10. Structure characteristic of the Sphingomyelin include (3 مفاضلة/ ) نهائي
a) Ceramide & Sphingosine
b) Ceramide & phosphoryl choline
c) Sphingosine& phosphoryl serine
d) Ceramide , inositol & phosphatidic acid
e) Sphingosine ethanolamine & phosphatidic acid
11. Phospholipids are important constituent of cell membrane because: (3 مفاضلة/ ) نهائي
a) They have glycerol
b) They can form bilayers in water
c) They have both polar & non polar portions
d) They combine covalently with proteins
e) all of the above
12. Phospholipids are (3 مفاضلة/ ) نصفي
a) Gangliocides
b) Simple lipids
c) Cerebrocides
d) Compounds lipids
e) Steroids
13. Triglycerides are (3 مفاضلة/ ) نهائي
a) Heavier than water
b) Major constituent of membrane
c) Non-polar
d) Stored predominantly in liver
3
