5 marksFoundation and Higher4.2.2.2 The heart and blood vessels4.2.2.3 Blood
AQA Trilogy 8464
Spec and skills
Paper scope: B1
Spec 4.2.2.2
Spec 4.2.2.3
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 HigherRequired practical 054.4.1.2 Rate of photosynthesis
AQA Trilogy 8464
Spec and skills
Paper scope: B1
Spec 4.4.1.2
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 Higher4.3.1.4 Fungal diseases
AQA Trilogy 8464
Spec and skills
Paper scope: B1
Spec 4.3.1.4
Original practice question
Answer and supported method checks
Rose leaves develop black spots and fall early. A grower collects fallen leaves, then sprays a fungicide. A neighbour claims that antibiotics would always be a better treatment.
.1
Explain why early leaf loss reduces plant growth.
[2 marks]
.2
Evaluate the treatments described.
[2 marks]
4 marksFoundation and Higher4.2.3.2 Plant organ system
AQA Trilogy 8464
Spec and skills
Paper scope: B1
Spec 4.2.3.2
Original practice question
Answer and supported method checks
A potometer reservoir initially contains 24.0 cm³ of water. After 90 minutes it contains 17.7 cm³. A sealed control loses no water. The student claims that all 6.3 cm³ must have evaporated from the leaves.
.1
Calculate the shoot's mean uptake rate.
[2 marks]
.2
Evaluate the claim about evaporation.
[2 marks]
4 marksFoundation and Higher4.4.2.1 Aerobic and anaerobic respiration
AQA Trilogy 8464
Spec and skills
Paper scope: B1
Spec 4.4.2.1
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.
