Homeostasis — Paper 1 · IGCSE Sciences - Co-ordinated (Double) 0654

10 The graph shows body temperature before, during and after running a race on a hot day. 38 S temperature / oC R Q T P 37 race race starts ends time Which stage of the graph occurs as a result of homeostasis? A P to Q B Q to R C R to S D S to T

1 marks

Answer: D

This question in 0654/11 May/June 2005

6 The graph shows how a person’s body temperature changes with changing air temperature. 40 body temperature temperature / oC 20 air temperature 0 5 10 15 time / hours Which process provides the energy for maintaining the body temperature as shown in the graph? A breathing B digestion C excretion D respiration

1 marks

Answer: D

This question in 0654/11 May/June 2006

9 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

1 marks

Answer: B

This question in 0654/11 May/June 2007

9 The graph shows changes in the concentration of sugar in the blood after a person has eaten a spoonful of honey. Q R concentration P S of sugar time honey eaten At which points on the curve is insulin being produced? P Q R S A no yes yes no B yes no no no C no yes no yes D yes yes yes no

1 marks

Answer: A

This question in 0654/11 May/June 2008

9 The graph shows body temperature before, during and after running a race on a hot day. S 38 R body temperature / °C Q T P 37 race race starts ends time Which stage of the graph occurs as a result of homeostasis? A P to Q B Q to R C R to S D S to T

1 marks

Answer: D

This question in 0654/11 Oct/Nov 2008

5 The graph shows how a person’s body temperature changes with changing air temperature. 40 body temperature temperature / °C 20 air temperature 0 5 10 15 time / hours Which process provides the energy for maintaining the body temperature as shown in the graph? A breathing B digestion C excretion D respiration

1 marks

Answer: D

This question in 0654/11 May/June 2009

8 What is most likely to happen after a person eats a meal high in protein? A The amount of water in the blood would decrease. B The concentration of urea in the urine would increase. C The level of insulin in the blood would increase. D The temperature of the body would decrease.

1 marks

Answer: B

This question in 0654/11 May/June 2009

7 What would be the effect on the blood of an over-secretion of insulin? A high levels of glucose B high levels of urea C low levels of glucose D low levels of urea

1 marks

Answer: C

This question in 0654/11 May/June 2010

9 What would be the effect on the blood of an over-secretion of insulin? A high levels of glucose B high levels of urea C low levels of glucose D low levels of urea

1 marks

Answer: C

This question in 0654/12 May/June 2010

8 Which internal conditions in a human being are maintained at a more or less constant level as the result of homeostasis? blood glucose blood insulin body temperature v v v 0 0O WwW D> v v x v x v x v v

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2010

12 Which internal conditions in a human being are maintained at a more or less constant level as the result of homeostasis? blood glucose blood insulin body temperature v v v 0 0O WwW D> v v x v x v x v v

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2010

8 Which internal conditions in a human being are maintained at a more or less constant level as the result of homeostasis? blood glucose blood insulin body temperature v v v 0 0O WwW D> v v x v x v x v v

1 marks

Answer: C

This question in 0654/13 Oct/Nov 2010

8 What happens shortly after eating a large amount of sugar? A More insulin is secreted by the pancreas. B More urea is made in the liver. C More urine is excreted by the kidneys. D More water is removed from the blood.

1 marks

Answer: A

This question in 0654/11 May/June 2011

5 What happens shortly after eating a large amount of sugar? A More insulin is secreted by the pancreas. B More urea is made in the liver. C More urine is excreted by the kidneys. D More water is removed from the blood.

1 marks

Answer: A

This question in 0654/12 May/June 2011

5 What happens shortly after eating a large amount of sugar? A More insulin is secreted by the pancreas. B More urea is made in the liver. C More urine is excreted by the kidneys. D More water is removed from the blood.

1 marks

Answer: A

This question in 0654/13 May/June 2011

8 The graph shows body temperature before, during and after running a race on a hot day. S 38 R body temperature / °C Q P T 37 time race race starts ends Which change in body temperature occurs as a result of homeostasis? A P to Q B Q to R C R to S D S to T

1 marks

Answer: D

This question in 0654/11 May/June 2012

9 Which organ in the body makes urea and how is urea removed from that organ? where made how removed A kidneys in urine B liver in blood C liver in bile D pancreas in pancreatic juice

1 marks

Answer: B

This question in 0654/12 May/June 2012

9 Which organ in the body makes urea and how is urea removed from that organ? where made how removed A kidneys in urine B liver in blood C liver in bile D pancreas in pancreatic juice

1 marks

Answer: B

This question in 0654/13 May/June 2012

9 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

1 marks

Answer: B

This question in 0654/11 May/June 2013

9 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

1 marks

Answer: B

This question in 0654/12 May/June 2013

7 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

1 marks

Answer: B

This question in 0654/13 May/June 2013

7 What is the meaning of homeostasis? A breathing faster after exercise B getting rid of carbon dioxide from the lungs C keeping conditions in the body constant D preventing the body from getting too hot

1 marks

Answer: C

This question in 0654/11 Oct/Nov 2013

6 What is the meaning of homeostasis? A breathing faster after exercise B getting rid of carbon dioxide from the lungs C keeping conditions in the body constant D preventing the body from getting too hot

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2013

6 In the maintenance of body temperature, which response does not need energy from respiration? A secretion of sweat B shivering C vasoconstriction D vasodilation

1 marks

Answer: D

This question in 0654/11 May/June 2014

10 The diagram shows a section through human skin. R Q artery vein What happens at Q and R if a person becomes hot? Q R A evaporation takes place increased blood flow B sweat collects reduced blood flow C sweat is released reduced blood flow D sweat is secreted increased blood flow

1 marks

Answer: D

This question in 0654/12 May/June 2014

5 In the maintenance of body temperature, which response does not need energy from respiration? A secretion of sweat B shivering C vasoconstriction D vasodilation

1 marks

Answer: D

This question in 0654/13 May/June 2014

8 What is the definition of homeostasis? A controlling body temperature B controlling responses to stimuli C maintaining a constant external environment D maintaining a constant internal environment

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2015

9 What happens when the body temperature falls below normal? A Arterioles (small arteries) supplying the skin constrict (become narrower). B Arterioles (small arteries) supplying the skin dilate (become wider). C Capillaries move towards the skin surface. D Capillaries move away from the skin surface.

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2015

9 What is an example of homeostasis? A adding acid to food in the stomach B breathing out water vapour from the lungs C keeping the body temperature constant D producing adrenaline in the adrenal glands

1 marks

Answer: C

This question in 0654/11 May/June 2016

10 What is an example of homeostasis? A adding acid to food in the stomach B breathing out water vapour from the lungs C keeping the body temperature constant D producing adrenaline in the adrenal glands

1 marks

Answer: C

This question in 0654/12 May/June 2016

9 What is an example of homeostasis? A adding acid to food in the stomach B breathing out water vapour from the lungs C keeping the body temperature constant D producing adrenaline in the adrenal glands

1 marks

Answer: C

This question in 0654/13 May/June 2016

2 In some animals, their internal temperature varies with that of their surroundings. Why does the metabolic activity of these animals slow down when it is cold? A Enzyme activity is slow. B Heart rate drops. C The blood freezes. D The absorption of food is slow.

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2016

2 What is the effect of vasodilation of arterioles supplying blood to the skin? A increased insulation B loss of heat C reduced sweating D shivering

1 marks

Answer: B

This question in 0654/13 May/June 2017

3 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

1 marks

Answer: B

This question in 0654/11 Oct/Nov 2017

3 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

1 marks

Answer: B

This question in 0654/12 Oct/Nov 2017

3 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body

1 marks

Answer: B

This question in 0654/13 Oct/Nov 2017

9 Which name is given to the maintenance of a constant internal environment in the human body? A absorption B diffusion C egestion D homeostasis

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2018

9 What is the definition of homeostasis? A controlling body temperature B controlling responses to stimuli C maintaining a constant external environment D maintaining a constant internal environment

1 marks

Answer: D

This question in 0654/11 May/June 2020

9 What is the definition of homeostasis? A controlling body temperature B controlling responses to stimuli C maintaining a constant external environment D maintaining a constant internal environment

1 marks

Answer: D

This question in 0654/12 May/June 2020

9 What is the definition of homeostasis? A controlling body temperature B controlling responses to stimuli C maintaining a constant external environment D maintaining a constant internal environment

1 marks

Answer: D

This question in 0654/13 May/June 2020

9 What is homeostasis? A keeping internal conditions constant B keeping the body at the same temperature as the environment C sweating to keep the body warm D vasoconstriction of arterioles to increase heat loss

1 marks

Answer: A

This question in 0654/11 May/June 2021

9 The diagram shows a section through the skin. 1 4 2 3 Which labelled structures help to maintain body temperature in the cold? A 1 and 3 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: A

This question in 0654/12 Feb/March 2022

9 The graph shows the variation of body temperature over time of a healthy person at rest. 38 Y body temperature 37 / °C X 36 time How will the body reverse the temperature change shown between times X and Y? A decreased breathing rate B decreased pulse rate C shivering D sweating

1 marks

Answer: D

This question in 0654/13 Oct/Nov 2022

8 Which process provides the energy for the maintenance of a constant body temperature? A homeostasis B photosynthesis C respiration D sweating

1 marks

Answer: C

This question in 0654/12 Feb/March 2023

8 During cold weather, warm blooded animals, such as mammals and birds, require more food. Which statement explains the reason for this? energy required to rate of maintain constant respiration body temperature A high high B high low C low high D low low

1 marks

Answer: A

This question in 0654/12 May/June 2023

9 A person leaves an air conditioned building. The temperature of the air conditioned building is 16 C. The outside temperature is 39 C. Which statement describes one response to the change in temperature? A The blood detects the change in temperature and the person starts to shiver. B The blood detects the change in temperature and the person starts to sweat. C The brain detects the change in temperature and the person starts to shiver. D The brain detects the change in temperature and the person starts to sweat.

1 marks

Answer: D

This question in 0654/12 May/June 2023

8 During cold weather, warm blooded animals, such as mammals and birds, require more food. Which statement explains the reason for this? energy required to rate of maintain constant respiration body temperature A high high B high low C low high D low low

1 marks

Answer: A

This question in 0654/13 May/June 2023

9 A person leaves an air conditioned building. The temperature of the air conditioned building is 16 °C. The outside temperature is 39 °C. Which statement describes one response to the change in temperature? A The blood detects the change in temperature and the person starts to shiver. B The blood detects the change in temperature and the person starts to sweat. C The brain detects the change in temperature and the person starts to shiver. D The brain detects the change in temperature and the person starts to sweat.

1 marks

Answer: D

This question in 0654/13 May/June 2023

8 Small mammals need more energy to maintain a constant body temperature. The graph shows the rate of oxygen used by species of shrews with different body masses. 12 11 10 9 oxygen used 8 / cm3 per g per hour 7 6 5 4 3 0 5 10 15 20 25 body mass of shrew / g Which statements are correct? 1 Heavier shrews use oxygen more slowly than lighter shrews. 2 Heavier shrews respire faster than lighter shrews. 3 Heavier shrews lose heat more slowly than lighter shrews. A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: C

This question in 0654/12 Oct/Nov 2023

8 A student runs 5 km. Which statement describes the change in the student’s breathing 5 minutes after the run ends? A Depth decreases and rate decreases. B Depth decreases and rate increases. C Depth increases and rate decreases. D Depth increases and rate increases.

1 marks

Answer: A

This question in 0654/12 Oct/Nov 2025

8 A student runs 5 km. Which statement describes the change in the student’s breathing 5 minutes after the run ends? A Depth decreases and rate decreases. B Depth decreases and rate increases. C Depth increases and rate decreases. D Depth increases and rate increases.

1 marks

Answer: A

This question in 0654/13 Oct/Nov 2025