Lipids

1. 1Lipids are classified into

   1. ASimple
   2. BComplex
   3. CDerived and Miscellaneous (rozmaite)
   4. DAll answers are good
2. 2Which types belong to the simple lipids?

   1. AFats and oils, Waxes /wosk/
   2. BPhospholipids
   3. CGlycolipids
   4. DLipoproteins
3. 3Complex lipids are

   1. AEsters of fatty acids with alcohols containing additional groups such as phosphate, nitrogenous base, carbohydrate, protein
   2. BEsters of fatty acids with alcohol
4. 4Which type contains lipoproteins?

   

   1. ASimple lipids
   2. BCompound lipids
5. 5Soluble vitamins, steroid hormones, hydrocarbons and ketone bodies.
   What type of lipids are these

   1. ADerived lipids / pochodne /
   2. BSimple lipids
   3. CCompounds lipids
   4. DMiscellaneous lipid / rozmaite /
6. 6Function of the simple lipids

   1. AFats found in the subcutoneous tissue and around certain organs serves as thermal insulators
   2. BTriacylglycerols (fats) primarily stored in the adipose tissue are concentrated fuel reserves of the body
   3. CConstituents of membranes,, source of fat soluble (A, D, E and K) vitamins and metabolic regulators
7. 7What are fatty acids?

   1. ACarboxylic acids with hydrocarbon side chain. They are the simplest form of lipids.
   2. BMacromolecular complexes of lipids with proteins.
8. 8How do we divide fatty acids?

   1. AEsterified and free (unesterified) fatty acids.
   2. BSaturated fatty acids, unsaturated fatty acids
9. 9Which answer is true

   1. ASaturated fatty acids do not contain double bond
   2. BUnsaturated fatty acids contain one or more double bonds
   3. CFatty acids with one double bond are monounsaturated, and those with 2 or more double bonds are collectivelv known as polyunsaturated fafty acids (PUFA)
10. 10Essential fatty acids:

    1. ALinoleic acid
    2. BLinolenic acid
    3. CPolyunsaturated fatty acids that cannot be synthesized by the body

11. 11Function of essential fatty acids

    1. APrevention of fatty liver, Transport of cholesterol
    2. BMembrane structure and function
    3. CFormation of lipoprotein
12. 12Which one has 1 double bond
    

    

    1. Asaturated
    2. Bmonounsaturated
    3. Cpolyunsaturated
13. 13Which property is about digestion of fat in the gastrointestinal tract?

    1. AHydrolysis
    2. BSaponification
    3. CLipid peroxidation
14. 14The hydrolysis of triacylglycerols by alkali to produce glycerol and soaps is known as
    
    Triacylglycerol + 3 NaOH ---------+ Clycerol + 3 R-COONa (soaps)

    1. AHydrolysis
    2. BSaponification
15. 15Rancidity

    1. AUndergo stepwise enzymatic hydrolysis to finally liberate free fatty acids and glycero
    2. BDeterioration / pogorszenie / of fats and oils resulting in an unpleasant taste
16. 16In the living cells, lipids undergo oxidation to produce peroxides and free radicals which can damage the tissue.

    1. ALipid peroxidation in vivo
    2. BHydrolysis
    3. CSaponification
17. 17What represents D in this steroid nucleus?

    

    1. ACyclopentane
    2. BPhenanthrene
18. 18Which of the following belong to the steroids?

    1. ACholesterol
    2. BTriacylglycerols
    3. CBile acid
    4. DSex hormones
    5. EVitamin D
19. 19Which one occurs in plants?

    1. ACholesterol
    2. BErgosterol
20. 20Cholesterol DOES NOT synthesis bile acid, vit D, sex hormones

    1. AVerdadeiro
    2. BFalso
21. 21Which one represents the ergosterol?

    1. A
    2. B
22. 22Which lipids possess polar or hydrophilic groups which tend to be soluble in water

    1. AAmphipathic lipids
    2. BCholesterol
    3. CPhospholipids
    4. DTriacyglycerol
23. 23In case of biological membranes, a bilayer of lipids is formed orienting the polar heads to the interior phase and the nonpolar tails into the outer aqueous phase.
    

    1. AVerdadeiro
    2. BFalso
24. 24How many non polar tail(s) has phospholipid?

    1. A1
    2. B2
    3. C3
25. 25Spherical vesicles formed by amphipathic lipids transporting particles

    1. AEmulsions
    2. BLiposomes
26. 26Enzyme that catalyzes the hydrolysis of fats (lipids)

    1. ALipase
    2. BLactase
    3. CAlcohol dehydrogenase
27. 27Main enzyme that breaks down dietary fats in the human digestive system

    1. APancreatic lipase
    2. BLingual lipase
    3. CGastric lipase
    4. DBreast milk lipase
28. 28Where does lingual lipase act?

    1. AIn mouth
    2. BIn stomach
    3. CIn small intestine
29. 29In stomach, secreted by a chief cells?

    1. ALingual lipase
    2. BGastric lipase
    3. CPancreatic lipase
30. 30Pancreatic lipase, is water soluble and can only work at the surface of fat globules. So breaking up of fat globules into much smaller droplets is necessary:

    1. ASaponification
    2. BEmulsification
31. 31Which one is Micelle

    

    1. AA
    2. BB
    3. CC
32. 32What transport the poorly soluble monoglycerides and fatty acids to the surface of the enterocyte where they can be absorbed

    1. AMicelles
    2. BLiposomes
33. 33Which form lipids are transported in the blood stream? . Free lipids are undetectable in blood

    1. AGlycolipids
    2. BPhospholipids
    3. CLipoproteins
34. 34Lipolysis is increased by:

    1. AGlucagone
    2. BInsulin
    3. CThyroxine
    4. DNorepinephrine
35. 35Triacylglycerol (TG) synthesis mostly occurs in

    1. AHeart
    2. BLiver
    3. CMuscles
    4. DAdipose tissue
36. 36DiHydroxyAcetone phospahte DHAP is reduced by glycerol 3-phosphate dehydrogenase to

    1. AGlycerol 3-phosphate
    2. BDiAcylGlycerol
37. 37 Phospholipid synthesis occurs in the

    1. ALiver
    2. BMuscles
    3. CSmooth endoplasmic reticulum

Descrição

Biochemistry Quiz sobre Lipids, criado por Project Szymon em 18-11-2017.

Autor

Project Szymon

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English

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Criado em 18 nov 2017 · atualizado em 19 nov 2017

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biochemistry

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