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:
            n  intravenous, in case of 
haemorrhage & prevent thrombosis. 
 
7) 
Agar 
A polymer of galactose, present in sea weeds. 
Used as laxative & for preparation of bacterial & fungi 
culture media & electrophoretic separation. 
b) 
Heteropolysaccharides 
A polymer consisting of 2 or more different monosaccharides 
There are 3 types 
1)
glycosaminoglycans, 
2)
proteoglycans, 
3)
Glucoproteins 
 
1) Glycosaminoglycans (mucopolysaccharides) (GAGs) 
are linear polymers with disaccharide repeating units. 
These units consist of: acidic and amino sugar 
1) Hyaluronic acid 
• It’s the most abundant GAGs in the synovial fluid of the joints 
&  vitreous humor of the eye. 
• Found in connective tissues & skin. 
Functions: 
1.
Acts as a lubricant in joints. 
2.
Responsible for the resilience of cartilage. 
3.
Involved in tissue repair. 
4.
Has a role in movement & proliferation of cells. 
2) Chondroitin sulphate A & C 
• Present in cartilage, cornea of the eye, tendons, ligaments,  
bones, & connective tissue matrix. 
Functions 
• An important structural component of cartilage & provides much of  
its resistance to compression. 
• Used as dietary supplement for treatment of osteoarthritis. 
3) Keratan sulfate 
• Found in cornea, cartilage & intervertebral disks. 
Functions 
• Act as a cushion to absorb mechanical shock. 
• Has a role in corneal transparency (by maintenance a level of 
hydration of cornea tissue). 
 
4) Dermatan sulfate 
• Found mostly in skin, also in blood vessels, heart valves,  
tendons & lungs. 
Functions: 
1.
Has a role in wound repair. 
2.
Acts as anticoagulant (it is called β-heparin). 
3.
Has a role in resistance to infectious disease. 
5) Heparin (α-Heparin) 
Produced by mast cells of liver, kidney, lung & skin. 
Functions: 
1. Acts as anticoagulant (activation of antithrombin III that 
inhibits the  intrinsic pathway of blood clotting). 
2. Activates LPL to clear the turbid plasma from the 
absorbed lipids 
after meals. 
2) 
Proteoglycans: 
are heavily glycosylated (contain 95 % CHO) protein chains  consist 
of 
a core protein & 1 or more covalently attached  
glycosaminoglycan chains (hyaluronic acid, chondrotin sulfate,  
keratan sulfate, dermatan sulfate, heparin). 
• There’re many types of them occur in the connective 
tissues, the largest type are aggrecan (the major type in cartilage) 
Funcions 
1.
Act as a constituent of extra-  
cellular matrix, interact with  
collagen & elastin to provide  
elasticity & support to tissue. 
2.
Act as a barrier in tissues. 
3.
Act as lubricant in joints. 
3) Glycoprotein 
(mucoproteins): 

are proteins that are covalently linked to CHO (1 or more oligosaccharide chains) 
by  O- or N-linkages. 

Their CHO content varies from 1% (in collagen) to 85% (in ABO blood group 
substances). 

Their CHO are mannose, galactose, N-Acetylglucosanine, N-  
Acetylgalactosamine, arabinose, xylose, L-fucose & sialic acids. 

They occur in cells in both soluble & membrane-bound form & in extra-

            Quiz: