100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Summary A level biology 2022: The cell cycle, mitosis, asexual reproduction, growth and repair $3.21
Add to cart
Quickly navigate to
Preview
  2.  
  3. GCSE
  4.  
  5. GCSE
  6.  
  7. Biology

Summary

Summary A level biology 2022: The cell cycle, mitosis, asexual reproduction, growth and repair
 6 views  0 purchase
  • Course
  • Biology
  • Institution
  • GCSE

Notes to get an A* in A level biology 2022. Covered content: The cell cycle, mitosis, asexual reproduction, growth and repair

Preview 1 out of 4  pages

Document information

  • January 27, 2022
  • 4
  • 2022/2023
  • Summary

Subjects

  • a level
  • gcse
  • biology
  • cell cycle
  • mitosis
  • asexual reproduction
  • growth and repair
  • 2022
  • edexcel
  • aqa

Written for

  • Secondary school
  • GCSE
  • Biology
  • 1
All documents for this subject (900)

Seller

avatar-seller
fernandotobarprez

Content preview

The cell cycle, mitosis and asexual reproduction
● Mitosis is an active period of nuclear division in cells.
● It is asexual, which means it produces genetically identical offspring from a single
parent cell.

Cell cycle




Interphase
● A period of non-division with different stages.
● G1 phase - The cell grows and develops and produces more organelles, nucleotides
and histones(normal metabolism).
● S phase - Chromosomes get replicated to form sister chromatids.
● G2 phase - organelles and other materials needed for cell division(e.g. tubulin
needed to form the spindle) are synthesized + DNA is checked.

Mitosis
● Prophase: chromosomes coil up/condense(here they can take up stains and become
visible), the nuclear envelope breaks down, the centrioles begin to move to
opposite poles and the spindle fibres form.
● Metaphase: contractions of spindle fibres(made up of overlapping contractile
microtubules) pull chromosomes to the metaphase plate(AKA equator) where they
line up along it with each centromere(region where chromatids in a chromosome are
attached) attached to spindle fibres.
● Anaphase: the centromeres split, so the sister chromatids split and become separate
chromosomes. Chromatids from each pair are drawn to opposite poles of the cell by
the spindle; energy from ATP is needed.
● Telophase: The spindle fibres break down and a new nuclear envelope starts to
form around the set of chromosomes at each end. The chromosomes also unravel
and can’t be seen any more.

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 fernandotobarprez. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $3.21. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

53340 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
$3.21
  • (0)
Add to cart
Added