PDF file containing notes from Cell Cycle lecture from the Cells to Systems Module in Pharmacology. Has diagram explaining the cell control mechanisms. Content is for A-level students
Mechanisms in place to ensure copies are identical
Interphase
G1
Cell grows larger
more organelles are produced
“Checkpoint” is established
Ensures no damage is present
S Phase
Rapid DNA replication and duplication of the centrosome for DNA
separation
G2
Cell increases in size
reorganises cell contents
checks for DNA structure
Cell Cycle 1
, Mitosis
Nuclear division
Cytokinesis
Cells moving apart
Mitosis
Cell division producing two identical cells
Daughter cell gets perfect cell of chromosomes
Too few/ too many chromos can lead to improper function in cells
Mitosis Steps
Early prophase- Chromosome division, and chromos begin to condense
Late prophase/ prometaphase- Spindle organises chromosomes which are
very compact, nuclear envelope breaks down
Metaphase- Chromosomes align on the centre line and attach to spindle
fibres from opposite sides
Anaphase- Chromatids are separated and pulled to opposite ends of the
cell
Telophase- Cell has nearly completed dividing and normal structures
come to be
Cytokinesis- Cytoplasm splits and produces two new cells
Quiescence- No cell cycle occurring but process can happen
Senescence- Cells divided too many times, it has reached its limit
Cells Stop Replicating
Hayflick Limit- Limitation on human cell division
Cell Cycle 2
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 ricebucket. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.86. You're not tied to anything after your purchase.
