Exam (elaborations)
Biology Paper 2 Topic 5 - GCSE AQA 2022 [Higher Triple]
- Module
- Biology Paper 2
- Institution
- AQA
Biology Paper 2 Topic 5 - GCSE AQA 2022 [Higher Triple]
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Biology Paper 2 Topic 5 - GCSE AQA 2022 [Higher Triple]1. What is the thermoregulatory centre?: The part of the brain that monitors and
controls the core body temperature.
2. What happens if the temperature is too high in the body?: - Sweat is
produced from sweat glands
- Vasolidation means more blood flows closer to the skin, resulting in increased
energy transfer
3. What happens if the temperature is too low in the body?: - Sweating stops
- Skeletal muscles contract rapidly to generate heat from respiration
- Hairs stand on end to create an insulating layer to trap heat in
4. What is the function of the human endocrine system: sends hormones
around the body
5. What is the pituitary gland?: Master gland, secretes several hormones in
response to body conditions.
6. What hormone does the pancreas produce?: insulin and glucagon
7. What hormone does the thyroid gland produce?: Thyroxine which is involved
in regulating the rate of metabolism.
8. What hormone does the adrenal gland produce?: Adrenaline which is used
to prepare the body for a fight or flight response
9. What hormone do the ovaries produce?: estrogen, which is involved in the
menstrual cycle
10. What hormone do the testes produce?: Testosterone which controls puberty
and sperm production.
11. What happens if water concentration in the blood is too high?: - Cells
expand as they take up more water, and eventually burst
12. What happens if water concentration in the blood is too low?: - Cells in
body lose water
- So cells shrink
13. How does the kidney produce urine?: By filtration of the blood and selective
reabsorption of useful substances such as glucose, some ions and water
14. How is Urea made?: By the breakdown of amino acids in the liver into
ammonia, and as ammonia is toxic it is converted into urea, which is filtered out of
the blood by the kidney
15. What is anti-diuretic hormone?: A hormone involved in the control of the loss
of water as urine
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