Biology 9700 · AS & A Level · Cells as the basic units of living organisms

Cells as the basic units of living organisms — practice question

Four students had to link each function to the appearance of certain cell structures in an animal cell. The functions were numbered as follows: 1 mRNA passes through to the ribosome 2 synthesis of polypeptides 3 packaging of hydrolytic enzymes that will remain in the cell The appearances were labelled with letters: V membranes that enclose an inner cavity W spherical structures with no membrane bound around them X a double membrane with pores running through it Y cylindrical structures with no membrane bound around them Z membrane-bound sacs, arranged in a flattened stack Which student made the correct matches between the numbered functions and the appearance of the cell structure?

  • A1 V, 2 X, 3 Y
  • B1 V, 2 Z, 3 Z
  • C1 X, 2 W, 3 Z
  • D1 X, 2 Z, 3 W

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