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

Cells as the basic units of living organisms — practice question

What is meant by a lysosome?

  • Aa vesicle containing enzymes, enclosed by a double membrane, that is budded off the endoplasmic reticulum
  • Ba vesicle containing hydrolytic enzymes and surrounded by a single membrane, found only in phagocytes
  • Ca vesicle enclosed by a single membrane, containing several different hydrolytic enzymes that may act inside or outside the cell
  • Da vesicle surrounded by a double membrane, containing enzymes which can hydrolyse damaged organelles in a cell

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