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专业课复试:考研细胞生物学专业测试题(选择题)

2014-02-20 15:39:47来源:233网校

  1. Which one of the following was used to determine the structure of the DNA molecule?( )

  a. Transmission electron microscope b. Scanning electron microscope

  c. Differential centrifugatioin d. X-ray crystallography

  e. None of the above

  2. You stain membrane proteins with a fluorescent-labeled antibody and notice the membrane is evenly stained. After a few hours, all of the fluorescence is at one end of a cell. You can conclude that( ).

  a. Lipids flip-flop in the membrane. b. Proteins move laterally in the membrane.

  c. The fluorescent dye was bleached. d. Proteins act as transporters.

  e. All of the above

  3. You have a preparation of ghosts and need to collect only the right-side out ghosts. You decide you can trap the right-side out ghosts in an affinity column packed with( )

  a. SDS. b. A carbohydrate-binding molecule.

  c. A protein-binding antibody. d. A serine-binding molecule.

  e. None of the above

  4. All of the following individuals contributed to cell theory except( )

  a. Robert Hooke. b. Matthias Schleiden.

  c. Theodor Schwann. d. Rudolf Virchow.

  5. The addition of a peptide with an RGD sequence would probably ? the binding of cultured cells to a fibronectin coated dish.( )

  a. enhance b. inhibit

  c. have no effect on d. none of the above


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