CHEMISTRY- metals, limestone, fuels, building materials BIOLOGY- reflex and sensory, menstrual hormones,

concise motes: aqa sceince 1:  CHEMISTRY- metals, limestone, fuels, building materials  BIOLOGY- reflex and sensory, menstrual hormones,

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  • Created on: 17-06-12 16:55
Preview of CHEMISTRY- metals, limestone, fuels, building materials  BIOLOGY- reflex and sensory, menstrual hormones,

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With usual reactions, the relay neurone is replaced with the CNS: (stimulus ) receptor sensory neurone CNS
motor neurone effector ( response)
Reflex arc: (stimulus ) receptor sensory neurone relay neurone motor neurone effector ( response)
- sensory neurone - relay neurone - motor neurone
- receptor - effector
FSH - follicle stimulating hormone
FSH - stimulates egg to mature
FSH - produced in pituitary gland
FSH - stimulates ovaries to produce oestrogen
Oestrogen - causes uterus lining development
Oestrogen - inhibits FSH production
Oestrogen - stimulates ovulation (the release of a mature egg from ovaries to uterus)

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Contraceptive pills contain hormones such as progesterone, and oestrogen which means no egg matures. Original pills
l contained way too much oestrogen which meant headaches and high blood pressure.…read more

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Copper is extracted by smelting copper rich ores. It can also be done by bio-leaching - this is involves bacteria
eating low grade copper ores, they are then dissolved (leached), we then extract the copper using electrolysis;
and phytomining ­ where plants are grown on low grade ores, the plants are then burnt, the ashes dissolved
(leached) in sulphuric acid, and then the copper is displaced by electrolysis.…read more

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