100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary AQA GCSE Biology Bioenergetics (Topic 4) Revision Notes £2.99   Add to cart

Summary

Summary AQA GCSE Biology Bioenergetics (Topic 4) Revision Notes

1 review
 356 views  0 purchase
  • Institution
  • AQA

These are detailed Revision Notes for Topic Four (Bioenergetics) of AQA GCSE Biology. They are written by me, using a combination of class notes, text books and revision guides. I have also uploaded the other chapters in my store.

Preview 1 out of 3  pages

  • No
  • Topic 4
  • October 13, 2020
  • 3
  • 2019/2020
  • Summary
book image

Book Title:

Author(s):

  • Edition:
  • ISBN:
  • Edition:
All documents for this subject (1)

1  review

review-writer-avatar

By: lilypinnock • 3 year ago

avatar-seller
emilysarahjudge
Bioenergetics
Photosynthesis:
 Photosynthesis is a chemical reaction that occurs in the green
chloroplasts of plants. It needs light from the Sun.
 Energy has to be absorbed to make the photosynthesis reaction occur,
so it is endothermic.
Carbon Dioxide + Water  Glucose + Oxygen
6CO₂ + 6H₂O  C₆H₁₂O₆ + 6O₂
 The carbon dioxide required for photosynthesis comes from the air. It
enters the leaves through the stomata. Water enters the plant through
the roots and is transported to the leaves in the xylem.
Limiting Factors:
 A limiting factor is an environmental factor that limits
the growth, abundance or distribution of an organism.
 As the light intensity increases so
does the rate of photosynthesis
until a certain point where it
plateaux.
 At the carbon dioxide concentration
increases so does the rate of
photosynthesis until a certain point
where it plateaux.
 As the temperature increases so does the rate of
photosynthesis because the molecules have more
kinetic energy and therefore collide more until it
reaches the optimum temperature. After the optimum
temperature the enzymes start to denature so the rate
of reaction slows down.
1
 light intensity= 2
d
Aerobic Respiration:
 Respiration is the chemical reaction that transfers
energy from the chemical energy store in glucose to
another chemical energy store.
 It is an exothermic reaction
 As aerobic respiration occurs in the presence of oxygen, the molecule
of glucose is completely broken down, producing a high yield of ATP
and also carbon dioxide and water. This reaction takes place in the
mitochondria and cells with high energy demands will have large
numbers of them.
Glucose + Oxygen  Carbon Dioxide + Water + (ATP)

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

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 emilysarahjudge. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £2.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

81989 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

Start selling
£2.99
  • (1)
  Add to cart