Summary
Summary Negative feedback notes for GCSE AQA Biology
Negative feedback notes for GCSE AQA Biology, great and descriptive, yet simple notes to get you a grade 9! Content for paper 2
[Show more]
Connected book
Book Title:
Author(s):
- Edition:
- ISBN:
- Edition:
Seller
Follow
Content preview
By the end of this module you should know / be able to:• Explain the roles of thyroxine and adrenaline in the body
• Adrenaline is produced by the adrenal glands in times of
fear or stress. It increases the heart rate and boosts the
delivery of oxygen and glucose to the brain and
muscles, preparing the body for ‘fight or flight’.
• Thyroxine from the thyroid gland stimulates the basal
metabolic rate. It plays an important role in growth and
development.
NEGATIVE FEEDBACK:
Maintaining a steady state.
If a factor in the internal environment
increases, changes take place to
reduce it and restore it to the original
level.
If a factor in the internal environment
decreases … a change takes place to
increase it and restore it to the orginal level
THYROXINE
Underline or highlight the key points from the information below, based on the
phrasing of the specification:
• The thyroid gland uses iodine from your diet to produce thyroxine
• Thyroxine stimulates the basal metabolic rate of
your body (rate of all your chemical reactions and
oxygen use in respiration)
• Thyroxine plays an important role in growth and
development in children
• In adults, the level of thyroxine should remain
stable due to negative feedback mechanisms
Extension: What happens if you don’t get enough iodine in your diet
(can be a problem in third world countries)?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller m1crowav. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £0.00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now