Search for notes by fellow students, in your own course and all over the country.
Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.
Title: Cell Biology
Description: These notes are for GCSE Biology students who want to achieve high grades, the notes are easy to revise and memorise.
Description: These notes are for GCSE Biology students who want to achieve high grades, the notes are easy to revise and memorise.
Document Preview
Extracts from the notes are below, to see the PDF you'll receive please use the links above
Cell Biology
Cell biology is the branch of biology that focuses on the study of cells, their structure,
function, and behavior
...
Understanding cell biology is crucial for
comprehending various biological processes, including growth, reproduction,
metabolism, and response to stimuli
...
Cell Membrane (Plasma Membrane): This is the outer boundary of the cell,
separating its internal environment from the external environment
...
2
...
3
...
It
controls gene expression and coordinates cell activities
...
Organelles: These are specialized structures within the cell that perform
specific functions
...
Functions of Cells:
Cells carry out a multitude of functions essential for the survival and functioning of
organisms:
1
...
2
...
This can occur through mitosis (asexual
reproduction) or meiosis (sexual reproduction)
...
Response to Stimuli: Cells can detect and respond to changes in their
environment, allowing organisms to adapt and survive in different conditions
...
Communication: Cells communicate with each other through various
signaling mechanisms, enabling coordination of activities within tissues and
organs
...
Some commonly used techniques
include:
1
...
2
...
3
...
4
...
Light Microscope
Electron Microscope
Diffusion:
Diffusion is the passive movement of molecules from an area of higher concentration
to an area of lower concentration, driven by the random motion of particles
...
Small, non-polar molecules like oxygen
and carbon dioxide can diffuse directly across the lipid bilayer of the cell membrane,
while larger or charged molecules may require assistance from membrane proteins
...
This movement of water helps to balance the
concentration of solutes on either side of the membrane, regulating cell volume and
preventing excessive swelling or shrinki
Title: Cell Biology
Description: These notes are for GCSE Biology students who want to achieve high grades, the notes are easy to revise and memorise.
Description: These notes are for GCSE Biology students who want to achieve high grades, the notes are easy to revise and memorise.