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GCSE Biology · key term
A hormone released by the thyroid gland that stimulates basal metabolic rate and is important for growth and development.
Used by AQA, Edexcel and OCR
Specification 4.5.3.7 · Paper 2
Revise: Negative FeedbackTwo hormones show how the body meets different demands: adrenaline helps it respond to an immediate threat, whereas thyroxine helps regulate the energy it uses at rest.
Specification 7.3 · Paper 2
A hormone made by the thyroid gland that helps control the body's metabolic rate.
Name the gland as well as the hormone: adrenal glands produce adrenaline; the thyroid gland produces thyroxine.
For thyroxine negative feedback, explain both directions: low thyroxine increases TSH release, while high thyroxine reduces it.
Do not confuse adrenaline’s rapid response to fear or stress with thyroxine’s control of basal metabolic rate.
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Thyroxine is a hormone produced by the thyroid gland in the neck. It helps control metabolic rate, including how quickly cells use nutrients and release energy.
Specification B3.2b · Paper 1 (Foundation), Paper 3 (Higher)
A hormone released by the thyroid gland that stimulates the basal metabolic rate.
Revise: Thyroxine and adrenalineThyroxine and adrenaline are both hormones, but they have very different roles: thyroxine helps regulate the body's ongoing metabolic activity, whereas adrenaline prepares the body rapidly for action.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A hormone secreted by the thyroid gland that regulates basal metabolic rate and contributes to growth and development.
Revise: Thyroxine and AdrenalineThyroxine helps regulate the body's longer-term metabolic activity, whereas adrenaline prepares the body for rapid action during fear or stress.