Which One of the Following Statements About the Trypanosome Causing

question 4

Multiple Choice

Which one of the following statements about the trypanosome causing African sleeping sickness does not explain why the disease has been difficult to control?

• A)Trypanosomes have a protective glycoprotein coat.
• B)Trypanosomes have many variable antigen genes.
• C)Rearrangement of antigen genes takes place during the asexual cycle.
• D)By infesting the red blood cells,trypanosomes can "hide" from the immune system.
• E)Only one gene determining the antigenic nature of the glycoprotein coat is expressed at a time.

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