Pretend you are a teacher preparing a quiz for the text I will provide. 
            Each quiz question should follow the format below. 
            Ensure that you carefully recheck the questions and answers for accuracy. 
            The output should be a ready-to-use list of dictionaries for the Python eval function:

            [

                    "question": "WRITE THE QUESTION HERE",
                    "options": ["A) OPTION_1", "B) OPTION_2", "C) OPTION_3", "D) OPTION_4"],
                    "answer": INDEX_OF_CORRECT_ANSWER_IN_OPTIONS_LIST,
                    "explanation": "EXPLAIN WHY THE ANSWER IS CORRECT"

            ]

            Text:
            ic regulators

Combinations of lipid and protein  (lipoproteins) 
are important cellular  constituents, occurring both 
in the cell  membrane and in the mitochondria, 
and  serving also as the means of transporting  
lipids in the blood.
Biochemistry for medics
4 4 
Following diseases are associated with  abnormal 
chemistry or metabolism of lipids-
Obesity
Atherosclerosis
Diabetes Mellitus
Hyperlipoproteinemia
Fatty liver
Lipid storage diseases
Biochemistry for medics
6/29/2012
5 5 
Esters of fatty acids with various  alcohols.
a. Fats: Esters of fatty acids with glycerol. Oils are  
fats in the liquid state.
b. Waxes: Esters of fatty acids with higher
molecular weight monohydric alcohols.
Biochemistry for medics
6/29/2012
6
1- Simple lipids
6 
2-Complex lipids
Esters of fatty acids containing  groups in addition to an alcohol 
and a fatty acid.
a.Phospholipids: Lipids containing, in addition to fatty  acids and an 
alcohol, a phosphoric acid residue. They  frequently have nitrogen-
containing bases and other  substituents, eg, in glycerophospholipids
the alcohol is  glycerol and in sphingophospholipids the alcohol is  
sphingosine.
b.Glycolipids (glycosphingolipids): Lipids containing a  fatty acid, 
sphingosine, and carbohydrate.
c.Lipoproteins: Combinations of lipid and protein.
d.Other complex lipids: Lipids such as sulfolipids and  aminolipids. 
Biochemistry for medics
7 7 

Fatty acids, Fat soluble Vitamins, Steroids, 
Ketone bodies.
8
3. Derived Lipid
Steroids: e.g., Cholesterol & steroid hormones 
(Chemical messenger & Cell membrane).
8 
R 2
O   
H 2C
O
C
R 1
O
C
O
C
H
O
H 2C
O
C
R 3
3
H 2O
O
CH 2
O H
R 2 + H O
C
H
CH 2
O H
O
H O
C
R 1
O
H O
C
H O
C
R 3
Fatty acids
Glycerol
Triglycerides
(Triacylglycerol)
1) Triacylglycerol: 3 Fas + glycerol,Non-polar.
Form the most lipid found in food & major storage form of energy.
It is the major class of dietary lipid.
1- Simple Lipids
2) Waxes: Esters of long chain of higher molecular weight monohydric alcohols 
with long fatty acids. 
They are generally solid at TR. 
It provide protection  as the wax in ear
9 
1) (phospholipids) Glycerophospholipids: FAs + glycerol +phosphate.
It contain hydrophobic end (FAs + glycerol) &  hydrophilic end 
(phosphate group).

Thus, they form bilayers of cellular membrane.
2) Sphingolipids/ Sphingosine:
There are 3 classes:
a)
Sphyngomyleins
b)
Cerebrosides
c)
Gangliosides
3)Lipoproteins: Chylomicrons, HDL, LDL, IDL &VLDL
2-Complex lipids
10 
1-Phospholipids
2-Complex lipids
Phospholipids or phosphatides: are lipid compounds (esters of FA
+ glycerol), with phosphoric acid group.
Phosphoacylglycerols: are tri-esters of glycerol:

2-ОН groups are esterified with FA non-polar.

The 3rd-OH is esterified with polar phosphoric acid.
(which in turn is esterified to an alcohol: serine, choline,….)
According to the type of  alcohol group , they're classified into:
A- Glycerophospholipids: the simplest type of PL that  considered as
derivatives of phospha

            Quiz: