A patient with influenza asks for antibiotics and takes a painkiller to reduce fever.
.1
Explain why antibiotics do not cure influenza and why the painkiller may still help.
[2 marks]
.2
Explain why developing drugs against viruses can be difficult.
[2 marks]
4 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
A respirometer shows a germinating seed sample uses 2.4 cm³ oxygen in 8 minutes. Its mass is 3.0 g. An equal-mass boiled sample uses no measurable oxygen.
.1
Calculate oxygen uptake rate per gram in cm³ per minute per gram.
[2 marks]
.2
Explain the difference between the seed samples.
[2 marks]
5 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
During exercise a patient's heart rate is 120 beats/min and each side pumps 110 cm³ per beat. Cardiac output is the volume pumped by one side per minute.
.1
Calculate cardiac output in dm³/min.
[2 marks]
.2
Explain how increased cardiac output supports exercise.
[3 marks]
4 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
Oxygen volumes collected from pondweed in three 5-minute repeats are 4.5, 5.0 and 5.5 cm³. A second student counts bubbles instead of collecting gas.
.1
Calculate the mean oxygen production rate.
[2 marks]
.2
Evaluate counting bubbles compared with collecting gas volume.
[2 marks]
4 marksFoundation and Higher
Spec and skills
Original practice question
Answer and supported method checks
A pharmaceutical team isolates a compound from willow. Another team studies a mould that prevents nearby bacteria growing.
.1
Explain how these investigations relate to the origins of aspirin and penicillin.
[2 marks]
.2
Evaluate the claim that a natural origin guarantees a safe and effective medicine.
