Biology 9700 · AS & A Level · The microscope in cell studies

The microscope in cell studies — practice question

The table illustrates how the number of human deaths linked to the bacterium $\textit{Staphylococcus aureus}$ has varied between 1997 and 2005. Methicillin is an antibiotic that is used to treat an illness caused by $S.\ aureus$. MRSA means methicillin-resistant $S.\ aureus$. Year and total number of death certificates: 1997: $S.\ aureus = 369$, MRSA $= 355$ 1999: $S.\ aureus = 452$, MRSA $= 431$ 2001: $S.\ aureus = 456$, MRSA $= 681$ 2003: $S.\ aureus = 420$, MRSA $= 890$ 2005: $S.\ aureus = 428$, MRSA $= 1512$ Which statement cannot be supported by this data?

  • AMore people have MRSA so the disease spreads.
  • BMRSA is more likely to lead to death as there is no treatment.
  • CResistant strains of MRSA are becoming more common.
  • D$S.\ aureus$ will always cause humans to die.

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