Homeostasis (Edexcel GCSE Biology Combined Science): Quizzes
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Practise the questions
10 questions from this quiz
What is homeostasis?
What is homeostasis?
Maintenance of a constant internal environment
What is the typical optimal body temperature in humans?
What is the typical optimal body temperature in humans?
37°C
At what temperature do enzymes begin to denature?
At what temperature do enzymes begin to denature?
Above 40°C
How does sweating cool the body down?
How does sweating cool the body down?
Sweat evaporation removes heat
What is vasodilation?
What is vasodilation?
Blood vessels widen to increase heat loss
What is the role of the hypothalamus in thermoregulation?
What is the role of the hypothalamus in thermoregulation?
It acts as the thermoregulatory centre
Where is the dermis located?
Where is the dermis located?
Inner layer beneath epidermis
What is osmoregulation?
What is osmoregulation?
Control of water levels & mineral ions
What happens if water concentration outside cells is too high?
What happens if water concentration outside cells is too high?
Cells swell and possibly burst
What is the role of ADH in osmoregulation?
What is the role of ADH in osmoregulation?
Controls water reabsorption in kidneys