Practice Test On Biochemistry! Trivia Quiz

46 Questions | Total Attempts: 209

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Practice Test On Biochemistry! Trivia Quiz

This is a practice test on the Biochemistry. There are different processes that happen within a living organism, and biochemistry helps to understand the chemical processes they undergo. Do you know how we get the energy to do everyday work, the purpose of proteins, or how living things grow? In this quiz, you will get to review how much you know about cells and the different ways proteins are transported. Give it a try!


Questions and Answers
  • 1. 
    Membrane LIPIDS in a lipid bilayer are HELD TOGETHER primarily BY
    • A. 

      Hydrophobic FORCES

    • B. 

      Hydrogen BONDS

    • C. 

      Electrostatic FORCES

    • D. 

      Covalent FORCES

  • 2. 
    The portion of an INTEGRAL PROTEIN that is located WITHIN the BILAYER of a plasma membrane is most likely to CONTAIN which of the following AMINO ACIDS?
    • A. 

      Aspartic acid

    • B. 

      Leucine

    • C. 

      Histidine

    • D. 

      Serine

  • 3. 
    The amino acid RESIDUES which are directly INVOLVED in the SUGAR-protein LINKAGE in GLYCOPROTEINS are:
    • A. 

      Gly, THR & SER

    • B. 

      Gln, SER & tyr

    • C. 

      Lys, his & glu

    • D. 

      Asn, THR & SER

  • 4. 
    The thermodynamic DRIVING FORCE for PASSIVE DIFFUSION depends on
    • A. 

      The THICKNESS of the membrane

    • B. 

      The CHEMICAL POTENTIAL gradient

    • C. 

      The HYDROPHOBIC character of the species

    • D. 

      The PERMEABILITY COEFFICIENT of the species

  • 5. 
    What IS NOT true about cell membranes?
    • A. 

      Made of LIPID BILAYER

    • B. 

      Have a WIDE RANGE of composition

    • C. 

      Composed of GLYCEROPHOSPHOLIPIDS, PROTEINS & CHOLESTEROL

    • D. 

      SAME composition in the INNER and OUTER face

  • 6. 
    Which of the following transport processes DOES NOT require a TRANSPORT PROTEIN?
    • A. 

      Passive diffusion

    • B. 

      Active transport

    • C. 

      Symport transport

    • D. 

      Facilitated transport

  • 7. 
    The RATE of passive diffusion depends on:
    • A. 

      The CHEMICAL potential gradient

    • B. 

      The THICKNESS of the membrane

    • C. 

      The PARTITION COEFFICIENT of the species

    • D. 

      All of the above

  • 8. 
    An aspect which IS NOT a CHARACTERISTIC of the Na+/K+ ATPase is:
    • A. 

      It is an ELECTROGENIC PUMP

    • B. 

      The process requires the HYDROLYSIS of ATP and the subsequent HYDROLYSIS of PYROPHOSPHATE for EACH transport event

    • C. 

      Its FUNCTION is to PUMP Na+ ions OUT and K+ ions INTO the cell

    • D. 

      The ATPase activity is associated with the CYTOPLASMIC side of the pump

  • 9. 
    The ATPase which is responsible for MAINTAINING the GREATEST ION GRADIENT is the:
    • A. 

      Na+-/K+ ATPase

    • B. 

      Erythrocyte ANION TRANSPORTER

    • C. 

      Ca++, ATPase

    • D. 

      H+, K+, ATPase

  • 10. 
    A transport system which can be described as a SYMPORT SYSTEM is
    • A. 

      Na+, K+, ATPase

    • B. 

      H+, K+ ATPase

    • C. 

      GLUCOSE permease

    • D. 

      Ca++, ATPase

  • 11. 
    Which statement is INCORRECT about the MECHANISM of the Na+-/K+ pump?
    • A. 

      The pump phosphorylate ITSELF when ATP, Mg++ and Na+ are BOUND

    • B. 

      ONE mole of ATP is HYDROLYZED for every THREE mole of Na+ transported OUT of the cell

    • C. 

      The cartiotonic steroid, digitalis, INHIBITS the pump by BINDING to a site on its EXTRACELLULAR face

    • D. 

      The phosphorylated PUMP has a HIGHER affinity for Na+ than for K+

  • 12. 
    ADDITION of the IONOPHORE gramicidin to ERYTHROCYTES in serum would:
    • A. 

      BREAK the cell membrane lysing the erythrocytes

    • B. 

      ELIMINATE the ELECTRICAL CHARGE of the membrane

    • C. 

      Cause the NET MOVEMENT of Na+ OUT of the cell INTO the serum

    • D. 

      ELIMINATE other PROTEINS from the MEMBRANE

  • 13. 
    What IS NOT true of LIPID ANCHORS in membranes?
    • A. 

      Are PERMANENTLY ATTACHED to the membrane

    • B. 

      Are used as SIGNALLING devices

    • C. 

      Are TRANSIENT in nature

    • D. 

      Can be ATTACHED via CYSTEINE

  • 14. 
    What IS NOT true of FACILITATED DIFFUSION?
    • A. 

      Is found in ALL TYPES of cells

    • B. 

      Allow ONLY diffusion DOWN a gradient

    • C. 

      Allow ONLY diffusion AGAINST a gradient

    • D. 

      Pores have AFFINITY for SOLUTE

  • 15. 
    ONE of these FATTY ACIDS is NON-essential
    • A. 

      Oleic

    • B. 

      Linoleic

    • C. 

      Alpha-linolenic

    • D. 

      Gamma-linolenic

  • 16. 
    ONE of these IS NOT a characteristic of MOST fatty acids.
    • A. 

      Have EVEN number of carbons

    • B. 

      If UNSATURATED, they have CIS double bonds

    • C. 

      Are found UNASSOCIATED

    • D. 

      Are NON-conjugated

  • 17. 
    Camels and other desert mammals get their water from:
    • A. 

      Dessert plants

    • B. 

      A pouch to store water in their bodies

    • C. 

      Water form lipid metabolism

    • D. 

      Dew condensation

  • 18. 
    A plasmalogen is:
    • A. 

      A glycerophospholipid with an AMIDE BOND

    • B. 

      An ETHER glycerophospholipid

    • C. 

      A FATTY ACID attached to a PROTEIN

    • D. 

      A TRYGLYCERIDE found in PLASMA

  • 19. 
    PHOSPHOLIPIDS which have an ETHER linkage are:
    • A. 

      Phosphatidic acid

    • B. 

      Ceramide

    • C. 

      Sphingomyelin

    • D. 

      Plasmalogens

  • 20. 
    Ceramides, cerebrosides and gangliosides have all in common
    • A. 

      Glycerol

    • B. 

      Fatty acids

    • C. 

      Phosphate groups

    • D. 

      Sphingosine

  • 21. 
    Which molecule or class of molecules IS NOT derived from CHOLESTEROL?
    • A. 

      Progesterone

    • B. 

      Testosterone

    • C. 

      Prostaglandins

    • D. 

      Cortisone

  • 22. 
    Give the name of the sugar shown below:
    • A. 

      Sialic acid

    • B. 

      Glucosamine acetate

    • C. 

      Galactosamine acetate

    • D. 

      Heparin acetate

  • 23. 
    Which of the following sugars is a HEMIKETAL?
    • A. 

      α-D-fructofuranose

    • B. 

      α-D-ribofuranose

    • C. 

      α-D-glucopyranose

    • D. 

      Methyl-α-D-glucopyranoside

  • 24. 
    Which of the following molecules CANNOT undergo MUTAROTATION?
    • A. 

      Glucose

    • B. 

      Ribose

    • C. 

      Fructose

    • D. 

      Sucrose

  • 25. 
    Which of the following sugars IS NOT oxidized to an ALDONIC ACID by the treatment with ALKALINE CuSO4- (Fehling's solution)?
    • A. 

      Glucose

    • B. 

      Sucrose

    • C. 

      Galactose

    • D. 

      Maltose

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