Hormones — Paper 2 · IGCSE Sciences - Co-ordinated (Double) 0654

3 The graph shows the change in blood glucose level in a healthy man. Which arrow identifies when the pancreas first starts to release glucagon? B blood glucose A level normal blood glucose level C D time

1 marks

Answer: D

This question in 0654/21 May/June 2017

5 A frightened animal may need to run away suddenly. Which substance is released to stimulate an increase in blood glucose concentration? A adrenaline B haemoglobin C plasma D platelets

1 marks

Answer: A

This question in 0654/21 May/June 2017

9 Which row correctly compares the hormonal and nervous systems in humans? hormonal nervous speed of length of speed of length of action response action response A fast long fast short B slow long fast long C slow long fast short D slow short slow short

1 marks

Answer: C

This question in 0654/22 Oct/Nov 2020

9 A student is in a dangerous situation and adrenaline is released into the blood. The table shows changes to pulse rate, breathing rate and pupil diameter. Which row correctly describes the effect of adrenaline? pulse rate breathing rate pupil diameter A decrease increase decrease B decrease decrease increase C increase increase increase D increase decrease decrease

1 marks

Answer: C

This question in 0654/22 May/June 2021

9 Adrenaline increases blood glucose concentration. It does this by changing the levels of glucagon and insulin. Which row is correct? adrenaline level glucagon level insulin level A decrease decrease decrease B decrease increase decrease C increase increase increase D increase increase decrease

1 marks

Answer: D

This question in 0654/22 Oct/Nov 2021

9 The graph shows the changes in blood glucose concentration during two hours of exercise. 5.6 5.5 5.4 blood glucose 5.3 concentration 5.2 / mmol per dm3 5.1 5.0 4.9 0 20 40 60 80 100 120 time / min What causes the change in blood glucose concentration between 30 and 60 min? 1 increased adrenaline release 2 increased glucagon release 3 increased insulin release A 1 only B 1 and 2 C 1 and 3 D 2 only

1 marks

Answer: B

This question in 0654/21 May/June 2022

9 Which type of chemical is adrenaline? A enzyme B hormone C mineral salt D vitamin

1 marks

Answer: B

This question in 0654/23 May/June 2023

8 Which row names a hormone, the organ that produces it and the hormone’s effect on blood glucose concentration? effect on hormone produced by blood glucose concentration A glucagon liver decreases B glucagon pancreas increases C insulin liver decreases D insulin pancreas increases

1 marks

Answer: B

This question in 0654/22 Feb/March 2025

9 What is secreted by the pancreas? A glucagon B glucose C glycerol D glycogen

1 marks

Answer: A

This question in 0654/21 May/June 2025

10 A man eats a meal high in carbohydrates. There is only a small change in his blood glucose concentration. Which statement explains why? A The pancreas releases insulin and this causes the excess glucose to be stored as glucagon. B The pancreas releases insulin and this causes the excess glucose to be stored as glycogen. C The pancreas releases glucagon and this causes the excess glucose to be stored as glycogen. D The pancreas releases glucagon and this causes the excess glucose to be stored as insulin.

1 marks

Answer: B

This question in 0654/21 Oct/Nov 2025