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1st Biochemistry Exam (Alcantara)

Quiz by Ed Alcantara

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25 questions
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  • Q1
    Many biosystems require hydrogen bonds. In other words,
    the hydrogen gives up an electron to another molecule.
    the electronegative pole of one molecule attracts the electropositive pole of another.
    hydrogen shares an electron with another molecule.
    hydrogen shifts between molecules.
    30s
  • Q2
    Carbon:
    (a) absorbs energy when it combines with oxygen.
    (c) releases energy when oxidized.
    (b) possesses a large amount of free energy in a reduced form.
    (e) Both (b) and (c) are correct.
    (d) releases free energy when reduced.
    30s
  • Q3
    Entropy:
    (a) is a state function of a system that describes the degree of order.
    (e) Both (a) and (b) are correct.
    (d) can neither be created nor destroyed.
    (c) always decreases in a closed system.
    (f) Both (a) and (c) are correct.
    (b) always increases in a closed system.
    30s
  • Q4
    A solution that has a pH of 5:
    (f) Both (b) and (d) are correct.
    (b) has half the hydrogen ion concentration of a solution with a pH of 10.
    (a) has twice the hydrogen ion concentration of a solution with a pH of 10.
    (c) is acidic.
    (d) is basic.
    (e) Both (a) and (c) are correct.
    30s
  • Q5
    L and D forms of a molecule:
    (b) rotate light in different directions.
    (c) have atoms arranged differently around all carbons.
    (e) Both (a) and (b) are correct.
    (d) are identical.
    (a) are isomers.
    30s
  • Q6
    Chitin is essential for the call wall of which of the ff microorganisms?
    Eubacteria
    Archaebacteria
    Fungi
    Animal
    30s
  • Q7
    _________________ is the control center of the cell.
    Mitochondria
    Cell nucleus
    Golgi apparatus
    Cell wall
    30s
  • Q8
    The ff are true about eukaryotes, except:
    With one nucleus.
    Plant and animals are made up of eukaryotic cells.
    None of the them.
    Anucleate
    30s
  • Q9
    If a substance has a pH of 7 this is known as:
    Neutral
    Acidic
    Basic
    None of the above.
    30s
  • Q10
    The only neutral substance is ____________.
    H2O
    Hydrogen
    Carbon
    None of the above
    30s
  • Q11
    The meaning of pH is:
    Hydrogen peroxide
    Power of Helium
    Philippines
    Power of Hydrogen
    30s
  • Q12
    If a substance has a pH of more than 7:
    None of the above.
    Both acidic and basic.
    Basic
    Acidic
    30s
  • Q13
    Which of the ff is associated with hereditary information?
    Fats
    Protein
    Carbohydrates
    Nucleic acid
    30s
  • Q14
    According to the Healthline website, One large egg (50 grams) provides 6.3 grams of ___________.
    Protein
    Carbohydrates
    None of the above
    Nucleic acid
    30s
  • Q15
    The basic unit of heredity.
    Allele
    All of the above
    Gene
    Genetics
    30s

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