Easy. She drew the diagram: High blood glucose → Pancreas detects → More insulin → Liver stores glycogen → Glucose drops. Perfect.
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:
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. biology mock paper dse
“In a long-term study, a population of bacteria was exposed to a sub-lethal dose of an antibiotic. After 50 generations, the minimum inhibitory concentration (MIC) had increased 1000x. Using the theory of natural selection, explain how this occurred. (8 marks) Bonus: Provide a real-world implication beyond the lab.”
Megan blinked hard. The sterile exam hall suddenly felt real. This wasn't just about getting a Level 5**. The mock paper wasn't just a rehearsal. It was a map of a crisis happening in real time. She looked back at the paper
She was ready to fight for it.
She wrote: Homeostasis is not just about pH and temperature. It is the fragile, beautiful fight of every living system to stay alive when everything around it says fall apart. It was just a sentence: Then, for the
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)