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Home Biochemistry Membrane Structure and Functions Comments

  • Question
  • The movement of molecules across a membrane by passive transport does not require


  • Options
  • A. an input of metabolic energy
  • B. internal energy
  • C. vibrational energy
  • D. none of these

  • Correct Answer
  • an input of metabolic energy 


  • Membrane Structure and Functions problems


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    • 1. Immunoelectrophoresis techniques are designed to separate the mixture components from each other by using electrophoresis

    • Options
    • A. prior to reaction with antibody
    • B. prior to reaction with antigen
    • C. after reaction with antibody
    • D. after reaction with antigen
    • Discuss
    • 2. DNA- footprinting is a suitable technique for identifying which of the following?

    • Options
    • A. Particular mRNA in mixture
    • B. Particular t-RNA in mixture
    • C. Introns within DNA
    • D. Protein binding site within DNA
    • Discuss
    • 3. In Counter immunoelectrophoresis

    • Options
    • A. electrophoresis will drive the antibody and antigen parallel to each other
    • B. electrophoresis will drive the antibody and antigen toward each other
    • C. the antibody will migrate towards anode
    • D. the antibody will migrate towards cathode
    • Discuss
    • 4. Agarose a porous matrix used in various molecular biology technique is made by repetitive units of

    • Options
    • A. maltose
    • B. agarobiose
    • C. agar
    • D. none of these
    • Discuss
    • 5. In Rocket Immunodiffusion the length of the rocket is

    • Options
    • A. proportional to the amount of antibody placed in each well
    • B. inversely proportional to the amount of antibody placed in each well
    • C. inversely proportional to the amount of antigen placed in each well
    • D. proportional to the amount of antigen placed in each well
    • Discuss
    • 6. Which of the following is correct?

    • Options
    • A. Membranes form boundaries around the cell and distinct subcellular components
    • B. Membranes act as selectively permeable barrier
    • C. Membranes contain varying amount of lipid and protein and some contain small amount of carbohydrates
    • D. All of the above
    • Discuss
    • 7. The mesosomes may be the sites of

    • Options
    • A. DNA replication and specialized enzymatic reactions
    • B. RNA replications and specialized enzymatic reactions
    • C. RNA replications and specialized cyclic reactions
    • D. None of the above
    • Discuss
    • 8. Which type of molecule spans the membrane, from its inner to outer surface according to the Fluid mosaic model of cell membranes?

    • Options
    • A. Cholesterol
    • B. Phospholipid
    • C. Protein
    • D. Carbohydrate
    • Discuss
    • 9. Peptidoglycan is a complex consisting of

    • Options
    • A. oligo-saccharide and protein
    • B. polysaccharide and protein
    • C. mono-saccharide and protein
    • D. aminoacid and carbohydrate
    • Discuss
    • 10. Lysozymes are found in

    • Options
    • A. plant cells
    • B. animal cells
    • C. microbial cells
    • D. all of these
    • Discuss


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