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What are the 2 main type of cells?
Eukaryotic and Prokaryotic
What is the use of a Plasma Membrane?
Acts as a selective barrier and helps to regulate its internal composition
What are the characteristics of Eukaryotes?
- Contain membrane-bound organelles
- Compartmentalise portions of cytoplasm for specific functions
- Linear DNA
What are the characteristics of Prokaryotes?
- No nucleus nor membrane bound organelles.
- Singular Circular DNA
Conversion of units in microscopy
- 1mm = 10 000 µm
- 1µm = 10 000 nm
1m = 100m = 1000mm = 106
µm = 109
Advantages of compartmentalization i.e cells having membrane bound organelles?
Separates ions, enzymes and other molecules in the cytoplasm
Separates chemical reactions, allowing each compartment to perform a different function
Allows specialisation of cells
Allow high concentrations of enzymes and molecules to accumulate in specific compartments (enhance efficiency of reactions)
Each compartment has a surface for attachment of proteins for specific functions
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