100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary Biology GCSE AQA B1 Revision Notes $3.90   Add to cart

Summary

Summary Biology GCSE AQA B1 Revision Notes

 7 views  0 purchase
  • Course
  • Institution

A summary of the topic of B1, with a bit of detail but easy to learn notes and a good explanation of the topic. Includes practical experiments.

Preview 2 out of 9  pages

  • October 7, 2022
  • 9
  • 2022/2023
  • Summary
  • 2
avatar-seller
Biology AQA GCSE B1 Revision Notes


Eukaryotic and prokaryotic cells


Eukaryotic - Contain their genetic material enclosed in their nucleus.
Prokaryotic - Genetic material is not enclosed in the nucleus.




Eukaryotic Prokaryotic

Size is 5 - 100 micrometres Size is 0.1 - 5 micrometres

Nucleus is present Nucleus is not present (Loop of DNA)

Multicellular Unicellular

Mitochondria is present Mitochondria is absent

Ribosomes are bigger Ribosomes are smaller

Vesicles present Vesicles present

Chloroplasts present (In plants) Chloroplasts absent (Chlorophyll in cytoplasm)

More than 1 number of chromosomes One chromosome is present

Flagella is absent Flagella is present

Vacuoles present Vacuoles absent




Examples Examples

Bacteria Protists, Fungi

Archaea Plants

Animals

, Animal Cell Specialisation



Most animal cells are specialised.
They have adaptations that help it with its job.
A cell specialising is called differentiation.


EG - Sperm cells have lots of mitochondria (provide energy), have a long tail to swim to the
ovum, Contain enzymes to digest their way through the outer layer of the ovum.


EG - Nerve cells have axons which carry the electrical impulses from one part of the body to
another. Myelin insulates the axon, speeds up transmission of impulses. The end of the axon
has synapses which allow the impulse to travel through different nerve cells. Dendrites have a
large surface area to connect with other nerve cells easier.


EG - Muscle cells have lots of mitochondria for energy, muscle cells join together to form
muscle tissue. Muscle cells can contract, Contain protein fibres which can change the length.

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 or Stuvia-credit 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 kylek. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $3.90. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79373 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$3.90
  • (0)
  Add to cart