It was a data-response question about a novel virus. A graph showed its transmission rate. A table showed the efficacy of a new mRNA vaccine. The final part said: “Using your knowledge of cell biology and immunity, propose one reason why public compliance with vaccination is a greater biological challenge than the virus itself. (4 marks)”

The room filled with the frantic scratching of HB pencils.

Then, for the bonus, she wrote: Real-world implication: Overuse of antibiotics in livestock farming accelerates the evolution of multi-drug resistant pathogens like MRSA, leading to untreatable infections in humans.

She read the stem: A 45-year-old male, Mr. Chan, has a fasting blood glucose of 13.2 mmol/L. Explain the negative feedback mechanism that is failing in his body. (6 marks)

“Pens down. Pencils up for MC questions,” the invigilator, Dr. Yip, said, his voice flat as a petri dish. “You have one hour and thirty minutes. Begin.”

She looked back at the paper. One final question, hidden in the margin of Question 14. It wasn’t marked with a point value. It was just a sentence:

“What does ‘homeostasis’ mean to you, in one sentence?”

She paused. The pen trembled in her hand. Her own words stared back at her: Untreatable infections. Her grandmother was in the hospital right now. A routine surgery had gone wrong because of a resistant E. coli infection.