BIOC4580 Final Review

1. 1If a sugar's bottom chiral -OH is on the right, which configuration does it have?

   1. AD-
   2. BL-
2. 2Which carbon is the anomeric carbon?

   

   1. A1
   2. B2
   3. C3
   4. D4
   5. E5
   6. F6
3. 3Which class of sugar does this molecule belong to?

   

   1. AKetose
   2. BAldose
4. 4What is NOT correct about polysaccharides?

   1. APolysaccharides consist of more than 20 sugar residues
   2. BPolysaccharides could be branched or unbranched
   3. CPolysaccharides have repeats of monomers and linkages in various complex patterns
   4. DPolysaccharides are made up of a single type of sugar or many
5. 5Which structure generally has a more diverse makeup?

   1. AOligosaccharides
   2. BPolysaccharides
6. 6Which addition causes glycosaminoglycans to have a large negative charge?

   1. ASulfation
   2. BPhosphorylation
   3. CIodation
   4. DMethylation
7. 7Which is NOT a property of glycosaminoglycans?

   1. AHaving a large negative charge
   2. BAdopt extended conformation
   3. CNegatively charged groups repel each other
   4. DDifferent strands interact with each other to form tertiary structures
8. 8Which macromolecule is comprised of glycosaminoglycans attached to a protein?

   1. AProteoglycan
   2. BGlycoprotein
   3. CGlycosphingolipid
   4. DLipoprotein
9. 9Glycosaminoglycans are long linear polysaccharides consisting of repeating __________ units.

   1. Adisaccharide of an uronic acid and an amino sugar
   2. Bmonosaccharide of iduronate
   3. Ctrisaccharide of amino sugar, uronate and lactone
10. 10Which of the following is a sialic acid?

    1. ANeu5Ac
    2. BGlcNAc
    3. CGlcA
    4. DIdoA

11. 11Which type of membrane protein contains alternating non-polar and polar R groups?

    1. AMembrane spanning beta-strand
    2. BMembrane spanning alpha helix
    3. CPeripheral membrane protein
    4. DLipid anchored membrane protein
12. 12Which can be released from the membrane by concentrated salt solutions?

    1. APeripheral membrane protein
    2. BSingle-pass transmembrane protein
    3. CLipid anchored membrane protein
13. 13Which amino acids are found concentrated near the membrane interface?

    1. ATrp and Tyr
    2. BTrp and Phe
    3. CTrp and Pro
    4. DPhe and Arg
14. 14Positively charged amino acids are commonly found on the cytoplasmic face of the membrane.

    1. ATrue
    2. BFalse
15. 15How many amino acids do the membrane-spanning segment of alpha-helices commonly contain?

    1. A16
    2. B20
    3. C35
16. 16Glycosaminoglycans are polysaccharides that act as a major component of the [blank_start]ECM[blank_end]. They are typically formed by disaccharide repeats of GlcNAc/GalNAc and uronic acid. Glycosaminoglycans are commonly esterified with [blank_start]sulfate[blank_end] groups, giving them an overall [blank_start]negative[blank_end] charge.

    1. Asulfate
    2. Bnegative
    3. CECM
17. 17Where are the N- and C- termini of beta barrels located with regards to the membrane?

    1. ABoth on the periplasmic side
    2. BBoth on the cytoplasmic side
    3. CN-: periplasmic; C-: cytoplasmic
    4. DN-: cytoplasmic; C: periplasmic

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Quiz on BIOC4580 Final Review, created by Chau Tran on 24/04/2020.

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Chau Tran

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