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Quiz 1 Test 1

Quiz by Raja Challa

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11 questions
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  • Q1
    Sulfur is in the same column of the periodic table as oxygen, but has electronegativity similar to carbon. Compared to water molecules, molecules of H2S
    will ionize more readily.
    will not form hydrogen bonds with each other.
    will have greater cohesion to other molecules of H2S.
    will have a greater tendency to form hydrogen bonds with each other.
    60s
  • Q2
    How many structural isomers are possible for a substance having the molecular formula C4H10?
    1
    3
    4
    2
    60s
  • Q3
    Which functional groups can act as acids?
    ketone and amino
    carboxyl and phosphate
    amino and carbonyl
    carboxyl and carbonyl
    60s
  • Q4
    Molecules with which functional groups may form polymers via dehydration reactions?
    either hydroxyl or carboxyl
    either carbonyl or carboxyl
    hydroxyl
    carboxyl
    60s
  • Q5
    The molecular formula for glucose is C6H12O6. What would be the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions?
    C18H36O18
    C18H10O15
    C18H32O16
    C18H30O15
    60s
  • Q6
    Which modifications of fatty acids will best keep triglycerides solid at warmer temperatures?
    adding hydrogens to the fatty acids
    creating trans double bonds to the fatty acids
    adding cis double bonds and trans double bonds to the fatty acids
    adding hydrogens and trans double bonds to the fatty acids
    60s
  • Q7
    The R group or side chain of the amino acid serine is –CH2–OH. The R group or side chain of the amino acid leucine is –CH2–CH–(CH3)2. Where would you expect to find these amino acids in a globular protein in aqueous solution?
    Serine would be in the interior, and leucine would be on the exterior of the globular protein.
    Both serine and leucine would be in the interior and on the exterior of the globular protein.
    Leucine would be in the interior, and serine would be on the exterior of the globular protein.
    Both serine and leucine would be in the interior of the globular protein.
    60s
  • Q8
    Humans can digest starch but not cellulose because
    humans have enzymes that can hydrolyze the β glycosidic linkages of starch but not the α glycosidic linkages of cellulose.
    the monomer of starch is glucose, while the monomer of cellulose is glucose with a nitrogen-containing group.
    humans have enzymes that can hydrolyze the α glycosidic linkages of starch but not the β glycosidic linkages of cellulose.
    the monomer of starch is glucose, while the monomer of cellulose is galactose.
    60s
  • Q9
    All of the following are polysaccharides except
    lactose
    amylopectin
    chitin
    glycogen
    60s
  • Q10
    How many molecules of water are needed to completely hydrolyze a polymer that is 11 monomers long?
    9
    10
    12
    11
    60s
  • Q11
    The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are the α form. Which of the following could amylase break down?
    chitin
    glycogen
    glycogen, cellulose, and chitin
    cellulose
    60s

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